Last updated: Sep 23, 2022

Java

Java is a high-level and object-oriented programming language originally developed by Sun Microsystems and released in 1995. Java runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX. Java is used to develop mobile apps, web apps, desktop apps, games, and much more. Let’s learn together with one of the most popular and widely used programming languages. You can also enrol into JAVA guided path to learn the basics of Java.

Difference Between Int and Integer in Java EASY

The main difference between int and Integer is that int is a primitive data type while Integer is a wrapper class. Learn more about the key differences between including their type, functionality, and performance.

Author Abhiyodaya Pandey

4 upvotes

Separators in Java EASY

Separators in Java are symbols like {}, (), [], ;, ,, and . used to structure code by defining blocks, statements, arrays, parameters, and objects. In this blog, we will discuss about separators in Java.

Author AkritiBhan

0 upvotes

What are Microservices In Java?

We are living in a digital world where almost everything can be done online. The Internet makes it possible to quickly find information, communicate w...

0 upvotes

Top 8 Java Projects on GitHub

GitHub is a platform that allows us to share, collaborate, review, clone projects of the people all over the globe. We can create our own GitHub repos...

0 upvotes

30 Best Java Projects For Beginners to Advanced 2024 EASY

Discover the 30 best Java projects for beginners to advanced learners in 2024, designed to boost coding skills and build practical, real-world Java programming experience.

0 upvotes

Best Java Programming Books for Beginners & Experts MEDIUM

We’ve rounded up a handful of the best books in 2021 for beginners as well as seasoned Java programmers that will help to further their learning of th...

0 upvotes

Java knowledge for Coding Job MEDIUM

Java is a well-ordered, object-oriented programming language, which can be easily learnt by beginners.

0 upvotes

Recursion in Java MEDIUM

Recursion occurs when a function calls itself, either directly or indirectly, a method supported by Java. This technique utilizes a stack to manage fu...

0 upvotes

Hot Beans JAVA IDEs for 2024 MEDIUM

In this article we will learn about Java ide used for developing java.

0 upvotes

15 Best Java Frameworks To Use In 2025 MEDIUM

Discover the top 10 Java frameworks, including their features, benefits, and notable companies using them, to enhance your Java development knowledge.

0 upvotes

Features of Java Programming MEDIUM

Java is a versatile and secure programming language, famous for its reliability in the developer community. It is known as one of the earliest object-...

Author Aayoushee ahlawat

0 upvotes

Groovy Script MEDIUM

In this blog, we will learn about Groovy Script. We will learn about its characteristics, features, and much more for better understanding.

Author Rinki Deka

0 upvotes

Inner Class in Java EASY

An inner class in Java is a class defined within another class. It enhances encapsulation, can access outer class members, and is categorized as static, non-static, or local.

Author Mohammad Saalim

1 upvote

Event Handling in Java EASY

This article will discuss the basics of event handling in Java, which includes event types, classes, & different approaches to handling events.

Author Gaurav Gandhi

0 upvotes

Advance Java Topics EASY

In this blog, we will learn about advanced Java topics. We will understand each concept in detail and later look at the differences for better understanding.

Author Sinki Kumari

0 upvotes

Java Generics Design Patterns MEDIUM

This article discusses Java Generics Design Patterns such as Factory, Strategy Bridge, Adapter, and Visitor. Generics help you write more flexible code.

0 upvotes

Collections Class in Java EASY

In this article, we will talk about the Java Collections class, its declaration, and various classes within the collection framework.

Author Gaurav Gandhi

0 upvotes

Fibonacci Series in Java EASY

Understanding the Fibonacci Series in Java: A sequence of numbers where each number is the sum of the two preceding ones, commonly initiated with 0 and 1.

Author Parth_Jain

0 upvotes

Enterprise Java Beans (EJB) EASY

In this article, we'll discuss the types of EJB, when to use them, & their advantages & disadvantages. We will also learn how to implement this with the help of relevant examples.

Author Rinki Deka

0 upvotes

Java Future Interface EASY

In this article, we will look at the basics of Java Future, like its syntax, methods, and how to use it in asynchronous programming.

Author Riya Singh

0 upvotes

Thread Safe in Java MEDIUM

thread-safe In Java refers to the property of code that guarantees correct behavior when multiple threads access shared data or resources concurrently.

1 upvote

Reverse a string in Java MEDIUM

This article discusses the methods to reverse a string in Java with examples of all approaches.

Author Shreya Deep

0 upvotes

Abstract Design Pattern EASY

In this article, we will learn what the Abstract Factory Pattern is, its components, an example of how to use it, its advantages & disadvantages, and when to use or avoid this pattern.

Author Rahul Singh

0 upvotes

Difference Between this and super in Java EASY

This blog will cover a detailed explanation of this and super keywords in Java. We will further study the difference between the two.

Author Akshay Parashar

0 upvotes

ClassLoader in java MEDIUM

Java classes are not loaded into the memory by default, but when a class is put to use, the Java Classloader is called by the JRE and loads it into the memory.

1 upvote

How to Use the Javac Command EASY

In this article, we will study how to use the Javac Command and check some examples.

0 upvotes

Char to Int in Java EASY

In Java, convert a char to int by casting ((int) char) or subtracting '0' for digits. Casting gives the Unicode value, while subtracting '0' converts numeric chars (e.g., '5' → 5).

Author Muskan Gupta

4 upvotes

Difference between Class and Interface EASY

In this blog, you will be exploring the differences between classes and interfaces in OOP. You will also learn when to use each for effective software design.

Author shruti_f97c

3 upvotes

Extending Interfaces HARD

In this article, we'll look at the interfaces in Java, their declaration and extending interface, along with some code examples.

Author Rinki Deka

0 upvotes

Arrays.toString() in Java with Examples EASY

In this blog, we will learn about arrays tostring java. We will understand its core concepts and will also write program for better understanding.

Author Sanjana kumari

0 upvotes

Regular Expressions in Java EASY

Explore Java Regular Expressions with examples, covering the Pattern class, Matcher class, PatternSyntaxException class, and MatchResult interface.

Author Yashesvinee V

0 upvotes

Generic LinkedList in Java EASY

This article covers the concept of a generic linked list in Java, its logic, and its implementation.

Author 3053_Jatin

0 upvotes

Java @SuppressWarnings Annotation EASY

In this article, we will explore what the @SuppressWarnings annotation is, why and how to use it, and the different warning types it can suppress.

Author Nikunj Goel

0 upvotes

The @Deprecated Annotation in Java EASY

This article will explain what the @Deprecated annotation is, why it's used, how to apply it, and what it means for both developers and users of the code.

Author Nikunj Goel

0 upvotes

SOLID Principles in java MEDIUM

SOLID Principles in Java: The acronym SOLID stands for: Single Responsibility Principle (SRP), Open-Closed Principle (OCP), Liskov Substitution Principle (LSP), Interface Segregation Principle (ISP), and Dependency Inversion Principle (DIP).

Author Abhiyodaya Pandey

0 upvotes

Main Thread in Java MEDIUM

In this article, we will look at the basics of thread, the main thread in Java, the methods to control the main thread along with some working code examples.

Author Abhiyodaya Pandey

0 upvotes

Logical Operators in Java

Explore Logical Operators in Java: OR (||), AND (&&), NOT (!), XOR. Learn Java logical operators syntax, examples, and condition tables.

Author APURV_RATHORE

0 upvotes

Sort Array in Java EASY

Sorting is an important topic from an interview perspective; this blog sheds light on how to sort Array in Java.

Author Manvi_Chaddha

0 upvotes

Binary Search in Java MEDIUM

Binary search in Java efficiently finds a target in a sorted array by repeatedly dividing the search interval in half, achieving O(log n) time complexity.

Author Manvi_Chaddha

2 upvotes

Difference Between Throw and Throws in Java EASY

Throw And Throws in Java is the concept of Java Exception Handling. Throw in Java is used within a method, while Throws in Java is used in the method declaration.

Author Kashish Saxena

0 upvotes

Basics

Java is one of the most popular and widely used programming languages and platforms. A platform is an environment that helps to develop and run programs written in any programming language.Java is fast, reliable, and secure. However to become proficient in any programming language, one firstly needs to understand the basics of that language. Let us learn the basics concepts.

Introduction to Java EASY

Explore the basics of Java programming with comprehensive introduction. Learn about Java's syntax, History, features, and more.

Author Aayoushee Ahlawat

14 upvotes

Is Java an Object-Oriented language? EASY

In this article we have discussed whether java is an object oriented language or not.

Author Anuradha_8356

1 upvote

Top 10 Best Java Compiler

In this article, we will discuss the Best Java Compilers that include some examples of IDEs that are available to run Java codes.

Author Rahul Singh

2 upvotes

Eclipse IDE for Java Developers EASY

In this blog, we will learn about Eclipse ide for Java developers. We will learn about debugging tools, version controls, and how to set up eclipse ide. We will also discuss its comparison with other IDEs.

Author Rahul Singh

0 upvotes

What is Byte Code in Java? EASY

Java bytecode is an intermediate code generated by the Java compiler (.class files). It’s platform-independent and runs on the JVM, which converts it to machine code for execution on any OS.

Author Gaurav Gandhi

0 upvotes

IntelliJ vs Eclipse EASY

IntelliJ vs Eclipse: A comprehensive difference between IntelliJ and Eclipse. Learn about which IDE suits your needs best.

Author Rahul Singh

1 upvote

Transient Keyword in JAVA MEDIUM

Explore the significance of the 'transient' keyword in Java programming. Learn how it affects object serialization and discover best practices for handling transient fields in your Java applications.

1 upvote

How to Generate a Random Number in Java? EASY

This article will guide you through different ways to generate random numbers in Java, covering various methods with syntax, examples, and best practices.

Author Pallavi singh

0 upvotes

Difference between Double and Float in Java EASY

In this article, we will discuss the float & double data types, their characteristics, and when to use each one effectively.

Author Rinki Deka

0 upvotes

Spy Number in Java EASY

In this article, we will learn what spy numbers are, with the help of some examples, and learn how to find them using a Java program.

Author Riya Singh

0 upvotes

Print Prime Numbers from 1 to N in Java EASY

In this article, we will learn how to print prime numbers from 1 to a given number (N) using Java.

Author Ravi Khorwal

0 upvotes

Tech Number in Java EASY

In this article, we will learn what a Tech Number is, how to identify it, and write a Java program to check if a given number is a Tech Number or not.

Author Sanjana kumari

0 upvotes

Sunny Number in Java EASY

In this article, we will discuss what sunny numbers are, how to check if a number is a sunny number, and will see its code implementation in Java.

Author Ravi Khorwal

0 upvotes

Perfect Square in Java EASY

In this article, we will discuss the concept of perfect squares in Java. We will learn how to identify perfect squares and implement different methods to check if a number is a perfect square with each approach and their respective examples.

Author Pallavi singh

0 upvotes

Smith Number in Java EASY

In this article, we will learn what Smith numbers are, look at some examples, and learn how to find them using a Java program.

Author Pallavi singh

0 upvotes

Dynamic Binding in Java EASY

In this article, we will learn dynamic binding in Java. We will learn how binding works in Java, its limitations and the difference between Static & Dynamic Binding.

Author Sinki Kumari

0 upvotes

Data Hiding in Java EASY

In this article, we'll discuss the concept of data hiding in Java, understand its importance, and see how it can be implemented effectively.

Author Sanjana kumari

0 upvotes

Difference between Extends and Implements in Java EASY

In this article, we will discuss the differences between "extends" & "implements" in Java with the help of proper examples.

Author Pallavi singh

0 upvotes

What is Core Java? EASY

In this article, we will learn what Core Java is, discuss the different Java editions available & understand how it differs from Advanced Java.

Author Pallavi singh

0 upvotes

Math.abs() Method in Java EASY

This article will explain how to use Math.abs(), provide examples, and discuss its key features.

Author Ravi Khorwal

0 upvotes

Buffer Reader in Java EASY

In this article, we will discuss the BufferedReader class in detail, like its declaration, constructors, methods, and examples of using it to read data from various sources.

Author Rahul Singh

0 upvotes

Static Method in Java EASY

In this article, we will discuss the features, syntax, & usage of static methods in Java. We will also understand the restrictions & differences between static & instance methods.

Author Sinki Kumari

0 upvotes

Readline in Java EASY

In this blog, we will learn about Readline in Java. We will understand its core concepts, its usage, and much more for better understanding.

Author Rahul Singh

0 upvotes

What is Optional Class in Java 8 EASY

In this article, we will learn what the Optional class is, how to declare it and will see different examples to understand it better.

Author Rahul Singh

0 upvotes

Scanner Class in Java EASY

Taking input from a user in a program is an essential part of writing good code and Scanner class in Java is used for this very purpose.

Author Rhythm Jain

0 upvotes

Do While in Java EASY

In this blog, we will learn about Do While in Java. We will understand its core concepts, its usage, and much more for better understanding.

Author Ravi Khorwal

0 upvotes

wait() and notify() in Java EASY

In this article, we will discuss the wait() & notify() methods in Java, and understand their use, variations, & differences.

Author Sinki Kumari

0 upvotes

Spiral Matrix in Java EASY

In this article, we'll discuss the unique concept of spiral matrices, understand how to generate them using Java code and look into different approaches to solve problems related to this.

Author Rinki Deka

0 upvotes

Deep Cloning and Shallow Cloning in Java

In this article, we will discuss the concepts of shallow copying, deep copying, & cloning in Java. We will also look at proper examples to understand these concepts.

Author Rahul Singh

0 upvotes

Producer Consumer Problem in Java EASY

In this article, we will discuss the Producer-Consumer problem in detail, understand its challenges, and learn how to implement effective solutions using Java.

Author Riya Singh

0 upvotes

String Pool in Java MEDIUM

String Pool in Java is a special memory region where the Java Virtual Machine stores String literals. In this article we will understand oJava String Pool and how to use it in your coding projects, making your applications more memory efficient.

Author Sanjana kumari

0 upvotes

Coupling in Java EASY

In this article, we will discuss the different types of coupling in Java, which are tight coupling & loose coupling. We will also discuss the advantages & disadvantages of each type and their respective examples to understand their use and differences.

Author Ravi Khorwal

0 upvotes

Behavioral Design Patterns EASY

In this article, we will discuss different types of behavioral design patterns, their uses & implementation in various programming languages.

Author Rinki Deka

0 upvotes

Adapter Design Pattern in Java EASY

In this article, we will discuss the components of the Adapter Design Pattern. We will see an example of how it works, understand why we need it, and discuss when not to use it.

Author Sanjana kumari

0 upvotes

Java Synchronized Method EASY

In this article, we will discuss the concept of synchronized methods in Java. We will understand why synchronization is needed, the types of synchronization, & how to use synchronized methods.

Author Rinki Deka

0 upvotes

Print Stack Trace Method in Java EASY

In this article, we'll discuss the syntax of the printStackTrace() method, how it works, with examples.In this article, we'll discuss the syntax of the printStackTrace() method, how it works, with examples.

Author Gaurav Gandhi

0 upvotes

Alphabet Pattern Program in Java EASY

In this article, we will see several examples of alphabet pattern programs in Java & understand the step-by-step process of creating them.

Author Pallavi singh

0 upvotes

Tower of Hanoi in Java MEDIUM

In this article, we'll discuss the Tower of Hanoi puzzle using Java programming. We'll look into the problem statement and the rules of the puzzle, and see how to solve it using recursion.

Author Sinki Kumari

0 upvotes

Java Math min() method EASY

In this article, we'll discuss the Math.min() method in Java, its syntax, parameters, return value, and examples to help you understand how to use it effectively in your code.

Author Sanjana kumari

0 upvotes

How to Set Path in Java? EASY

In this article, we will learn how to set the Java path in both Windows and Linux operating systems.

Author Pallavi singh

0 upvotes

Dynamic Memory Allocation in Java MEDIUM

In this article, we will discuss the basics of dynamic memory allocation in Java, like the role of the Java Virtual Machine (JVM) and the differences between stack and heap memory.

Author Sinki Kumari

0 upvotes

Diamond Pattern in Java EASY

In this article, we'll explain the diamond pattern in detail, which covers the problem description, illustration, algorithm & code examples with different looping methods.

Author Sinki Kumari

0 upvotes

CRUD Operations in Java EASY

In this article, we'll learn about CRUD operations in Java, discussing each operation in detail, with code examples, & showing their implementation in a real-world scenario.

Author Sanjana kumari

0 upvotes

Concrete Class in Java EASY

In this article, we'll discuss what concrete classes are, their syntax, and how they differ from abstract classes. We'll also look at examples of concrete classes that extend abstract classes or implement interfaces.

Author Sanjana kumari

0 upvotes

Completablefuture in Java 8 EASY

In this article, we will learn what CompletableFuture is, how to create & use it, how to compose multiple CompletableFutures, & how to handle exceptions.

Author Ravi Khorwal

0 upvotes

Return Statement in Java EASY

In Java, the return statement exits from a method and optionally sends a value back to the caller. It's used in methods with or without a Java return type (void for no return value).

Author Rahul Singh

0 upvotes

Lombok in Java EASY

In this article, we'll learn what Lombok is, why it's useful, its key features, how to use it in a Java project & with code examples.

Author Sinki Kumari

0 upvotes

Java Assert EASY

In this article, we will learn what assertions are, how to use them in Java, & when they can be most effective.

Author Sinki Kumari

0 upvotes

setBounds Method in Java MEDIUM

In this blog, we will learn about setBounds Method in Java. We will understand its core concepts, syntax, and learn about parameters and much more for better understanding.

Author Riya Singh

0 upvotes

Java Class getMethod() Method EASY

In this article, we will discuss this method in detail, like the syntax, parameters, return value, & exceptions of the getMethod() function.

Author Gaurav Gandhi

0 upvotes

Disarium Number in Java EASY

In this article, we will learn what disarium numbers are, look at some examples, & learn how to check if a number is a disarium number or not.

Author Gaurav Gandhi

0 upvotes

Extends Keyword in Java EASY

In this article, we will learn about the extends keyword in Java, its syntax, examples of how to use it, and what happens when we try to extend a final class or interface.

Author Sinki Kumari

0 upvotes

Matrix Addition in Java EASY

This article will explain how to implement matrix addition in Java and discuss its time and space complexity.

Author Gaurav Gandhi

0 upvotes

Resultset In Java EASY

In this article, we will learn about the commonly used methods of the ResultSet interface with an example of a scrollable ResultSet.

Author Sanjana kumari

0 upvotes

Floyd Triangle in Java EASY

In this article, we will learn about Floyd's Triangle, look at an illustration to understand it better, go through the algorithm to create it, and see how to implement it in Java code step-by-step.

Author Riya Singh

0 upvotes

Predicate in Java 8 EASY

In this blog, we will learn about Predicate in Java 8. We will learn about its characteristics, features, and much more for better understanding.

Author Ravi Khorwal

0 upvotes

Difference between Core Java and Advanced Java EASY

In this article, we will learn the main differences between Core Java & Advanced Java, which will eventually help you understand their specific roles in the Java ecosystem.

Author Gaurav Gandhi

0 upvotes

Equals and Hashcode in Java MEDIUM

In this article, we will learn the basics of equals() & hashCode(), their syntax, and principles, with examples.

Author Sinki Kumari

0 upvotes

Math.sqrt() Method in Java EASY

In this article, we'll learn how to use Math.sqrt() in Java, along with examples to help you understand its use.

Author Sanjana kumari

0 upvotes

Application of Java EASY

In this article, we will look into the diverse applications of Java & understand how it is used in software development to build innovative solutions across different domains.

Author Ravi Khorwal

0 upvotes

Forest Transformation in Java EASY

In this article, we'll discuss the basics of forest transformation in Java, such as what it is and how it works.

Author Riya Singh

0 upvotes

Java Unicode System EASY

In this article, we will learn about the various types of encoding, the reasons why Java uses the Unicode system, what the Unicode system is, how to convert UTF-8 to Unicode using a Java program, & the problems caused by Unicode.

Author Rahul Singh

0 upvotes

Java Random Number EASY

In this article, we'll discuss the 3 different methods Java offers for generating random numbers & learn how to use them effectively in your code.

Author Pallavi singh

0 upvotes

Java Scanner next() Method EASY

In this article, we will focus on the next() method of the Scanner class, which reads the next token from the input as a string.

Author Rahul Singh

0 upvotes

Library Management System Project in Java EASY

In this article, we will look at how to create a basic library management system using Java. We will learn the key features with code examples to help you with the program.

Author Rinki Deka

0 upvotes

Memory Leak in Java EASY

In this article, we'll explore what memory leaks in java are, their symptoms, causes and their prevention techniques.

Author Rahul Singh

0 upvotes

Data Access Object(DAO) in Java EASY

In this article, we will discuss the DAO pattern, its functionalities, key components, implementation in Java, use cases, advantages & disadvantages.

Author Gaurav Gandhi

0 upvotes

Static vs Final Keyword in Java EASY

This article will explore the differences between static and final, their uses, and how they affect the behavior of variables and methods in Java.

Author Riya Singh

0 upvotes

Neon Number in Java EASY

In this article, we'll talk about neon numbers in detail. We will learn how to check if a number is a neon number using Java code, discuss the algorithm and pseudo code, and even look at a recursive approach.

Author Sanjana kumari

0 upvotes

Automorphic Number in Java EASY

In this article, we will learn what automorphic numbers are, how to find them, & see how to implement a Java program to check if a given number is automorphic or not.

Author Rinki Deka

0 upvotes

Java Interpreter EASY

In this article, we'll discuss what a Java interpreter is, how it works, its features, and how it differs from a compiler.

Author Gaurav Gandhi

0 upvotes

Setting up the environment

In this article, we will explain how to set up Java on different Operating Systems.

Author Mohammad Saalim

0 upvotes

Legacy Class in Java EASY

In this article, we will discuss some of the most commonly used legacy classes and interfaces in Java, which are Hashtable, Stack, Dictionary, Properties, Vector, and the Enumeration interface.

Author Ravi Khorwal

0 upvotes

Java Naming Conventions EASY

In this article, we will talk about the different types of naming conventions used in Java for classes, interfaces, methods, variables, constant variables & packages.

Author Riya Singh

0 upvotes

Superclass In Java EASY

In this article, we will discuss the characteristics of the super keyword in Java, its various uses with variables, methods & constructors & the advantages it offers in object-oriented programming.

Author Pallavi singh

0 upvotes

Java Default Method EASY

Default methods are particularly useful for evolving APIs. Before Java 8, adding a new method to an interface required all implementing classes to provide an implementation.

Author Sanjana kumari

0 upvotes

Java Time Duration EASY

In this article, we will discuss the Java Time Duration class, its fields, and methods, and examples of how to use it effectively.

Author Ravi Khorwal

0 upvotes

New Keyword in Java EASY

In this article, we'll learn the syntax of the new keyword, looks into the process of object creation, and illustrate its use with practical examples.

Author Rahul Singh

0 upvotes

Enterprise Java Beans (EJB) Architecture EASY

In this article, we will learn about the EJB architecture, its components, and how it works. We will also discuss the differences between EJB and regular Java Beans.

Author Rinki Deka

0 upvotes

Reverse the Number in Java EASY

In this article, we will learn about different methods to reverse a number in Java, including using a while loop, recursion, & the StringBuilder class.

Author Ravi Khorwal

0 upvotes

Association in Java MEDIUM

Exception handling in C++ is a mechanism to handle runtime errors using try, catch, and throw keywords.

Author Gaurav Gandhi

0 upvotes

Scope of Variables in Java EASY

This article will explore the different types of variable scopes in Java, with examples to illustrate each type.

Author Rinki Deka

0 upvotes

'this' Keyword in Java EASY

In this blog, we will learn 'this' Keyword in Java. We will learn about why it is used, syntax, parameters, and examples.

Author Rinki Deka

0 upvotes

Math.max in Java EASY

This article will explain how to use Math.max with syntax, examples, key features, and practical applications.

Author Sanjana kumari

0 upvotes

Advantages and Disadvantages of Java EASY

In this article, we will discuss the advantages & disadvantages of using Java & help you understand when it might be the right choice for you.

Author Ravi Khorwal

0 upvotes

Object Class in Java MEDIUM

In this article, we will discuss the Object class in Java & learn about its various methods with proper examples.

Author Ravi Khorwal

0 upvotes

How to Check Java Version? EASY

In this article, we will learn about the components of the Java language & learn how to check the Java version on different operating systems like Windows & Mac.

Author Sanjana kumari

0 upvotes

What is JDK in Java? EASY

The Java Development Kit (JDK) is a software package that provides tools to develop, debug, and run Java applications. It includes the JRE, compilers, and essential libraries.

Author Yashesvinee V

0 upvotes

Scanner and nextChar() in Java EASY

In this article, we'll discuss what nextchar does and how to use it properly. We'll cover the syntax for calling nextchar, and how to declare a Scanner to use it with code examples.

Author Rahul Singh

0 upvotes

Types of Classes in Java MEDIUM

In this article, we will look into each of these class types, explaining their definitions, use cases, and syntactical implementations.

Author Rahul Singh

0 upvotes

Java And Operator EASY

This article will talk about the syntax, usage, & practical applications of the && operator.

Author Ravi Khorwal

0 upvotes

Preparedstatement Java MEDIUM

In this blog, we will learn about Preparedstatement Java. We will learn about its characteristics, features, and much more for better understanding.

Author Riya Singh

0 upvotes

Nested Loops in Java EASY

Nested loops are useful when you need to perform a series of operations within a multi-dimensional data structure or create complex patterns.

Author Rinki Deka

0 upvotes

Java Primitive Data Types MEDIUM

In Java, primitive data types are the most basic data types, offering predefined values. They include byte, short, int, long, float, double, char, and boolean.

Author Rinki Deka

0 upvotes

Optional Class in Java 8 EASY

In this article, we'll discuss what optional classes are, how to use them, & the benefits of using them in our Java code.

Author Rinki Deka

0 upvotes

Java 11 Features EASY

In this blog, we will learn about Java 11 Features. We will learn about its characteristics, features, and much more for better understanding.

Author Ravi Khorwal

0 upvotes

Odd or Even Program in Java EASY

In this article, we'll see different methods to determine the nature of a number using Java. We will start with simple checks using the modulo operator and then move on to to more advanced methods that use bitwise operations.

Author Riya Singh

0 upvotes

Methods in Java EASY

Methods in Java are blocks of code that perform specific tasks and are reusable. They can have parameters, return values, and are defined using returnType methodName(parameters).

Author Pallavi singh

0 upvotes

Reference Variable in Java EASY

Reference variables are a fundamental concept in Java and are crucial for object-oriented programming, allowing for the manipulation and management of objects dynamically during the runtime of a program. In this article, we will learn about the concept of reference variables.

Author Pallavi singh

1 upvote

Robust Meaning in Java EASY

In this article we will Understand the robust meaning in Java as it is crucial for coding students because it directly impacts their ability to write effective and resilient code.

Author Sanjana kumari

0 upvotes

JVM (Java Virtual Machine) and its Architecture EASY

JVM stands for Java Virtual Machine. It is a crucial component of the Java Runtime Environment (JRE) and Java Development Kit (JDK). In this article we will learn about JVM in java and its architecture.

Author Mohammad Saalim

0 upvotes

Java Program to Compute GCD EASY

In this article, we will learn various methods to calculate the GCD in Java, including the general method, the Euclidean algorithm using repeated subtraction, & the Euclidean algorithm using repeated division.

Author Pallavi singh

0 upvotes

Structure of Java Program MEDIUM

In this blog, we will learn about Structure of Java Program. We will understand its core concepts, its usage, and much more for better understanding.

Author Rinki Deka

0 upvotes

Comparable Interface in Java EASY

In this article, we will look into the Comparable interface, discuss its compareTo() method, & show how to utilize it with Collections class to sort objects efficiently.

Author Rinki Deka

0 upvotes

Difference between JDK, JRE and JVM MEDIUM

In this blog, we will discuss the differences between JDK JRE and JVM.

Author Kushleen Waraich

0 upvotes

While Loop in Java EASY

A while loop in Java repeatedly executes a block of code as long as its specified condition is true, making it ideal for uncertain iteration counts.

Author Sinki Kumari

0 upvotes

Math Functions in Java EASY

In this blog, we will learn about Math Functions in Java. We will understand its core concepts, its usage, and much more for better understanding.

Author Rahul Singh

0 upvotes

Method Reference in Java 8 EASY

In this blog, we will learn about Method Reference in Java 8. We will learn about its characteristics, features, and much more for better understanding.

Author Rinki Deka

0 upvotes

OOPS Concepts in Java EASY

In this blog, we will learn about OOPS Concepts in Java. We will understand its core concepts, its usage, and much more for better understanding.

Author Pallavi singh

0 upvotes

Just In Time Compiler

This blog will cover the Just In Time Compiler.

Author Mohammad Saalim

0 upvotes

Modulo or Remainder Operator in Java EASY

In this blog, we will learn about Modulo or Remainder Operator in Java. We will understand its core concepts, its usage, and much more for better understanding.

Author Riya Singh

0 upvotes

Composition in Java

tion is achieved by including an instance of one class within another class. This powerful technique enables code reuse, flexibility & helps in designing clear, modular programs.

Author Riya Singh

0 upvotes

Process vs Thread in Java

In this blog, we will learn about Process vs Thread in Java. We will first understand what is a process and thread. Later in the blog, we will look at the differences between the two.

Author Gunjan Batra

0 upvotes

Object Creation in Java EASY

In this article, we will discuss different object creation methods in Java, like using the new keyword, new instance, clone() method, deserialization, and the newInstance() method of the Constructor class.

Author Riya Singh

0 upvotes

Strong Number in Java EASY

When the sum of the Factorial of each digit of the number is equal to the number itself is called a Strong Number. In this article, we will learn how to check Whether or Not the Given Number is a Strong Number in Java.

Author Rinki Deka

0 upvotes

Nested Class in Java MEDIUM

In this blog, we will learn about Nested Class in Java. We will understand its core concepts, its usage, and much more for better understanding.

Author Pallavi singh

0 upvotes

Java Global Variables EASY

In this article, we will discuss Java global variables. Understanding how to declare, initialize, and use global variables is crucial for efficient and organized coding in Java.

Author Gaurav Gandhi

0 upvotes

Type Casting in Java MEDIUM

In this blog, we will learn about Type Casting in Java. We will understand its core concepts, its usage, and much more for better understanding.

Author Ravi Khorwal

0 upvotes

Java Program to Find All Palindromic Sub-Strings of a String

In this blog, we will learn about Java Program to Find All Palindromic Sub-Strings of a String. We will understand the time complexity of the program.

Author Sanjana kumari

0 upvotes

Datainputstream in Java EASY

In this article, we will discuss the Java DataInputStream class, its declaration, methods, & examples to understand how to use it effectively in our Java codes.

Author Sinki Kumari

0 upvotes

Best Java Visualizers MEDIUM

Java Visualizers are tools to debug code step-by-step visually, aiding in understanding program flow. In this article, we will learn about Java Visualizers in detail and discuss some of the best Java Visualizers in use.

Author Rinki Deka

1 upvote

Java Map containskey EASY

In this blog, we will learn about Java Map containskey. We will understand its core concepts, its usage, examples, and much more for better understanding.

Author Lekhika Ujiniya

0 upvotes

Java Char Keyword MEDIUM

The char data type in Java is used to store a single character. It's one of the primitive data types, along with int, float, double, & others. When you declare a variable as a char, it can hold a single Unicode character.

Author Sanjana kumari

0 upvotes

Difference Between JIT and JVM

Explain JIT and its working in brief. Highlight the key differences between JIT and JVM.

Author Yashesvinee V

0 upvotes

Map interface in Java MEDIUM

In Java, the Map interface represents a collection of key-value pairs. It doesn't allow duplicate keys and provides methods to manipulate, retrieve, and store mappings efficiently. In this blog, we will learn about Java Map.

Author Gaurav Gandhi

0 upvotes

Java Standalone Application MEDIUM

In this article, we will learn what we mean by Java standalone applications and how we can create them.

Author Nikhil Joshi

1 upvote

Iterate Map in Java MEDIUM

In this blog, we will learn about how to Iterate Map in Java. We will understand how to use the map in Java and also different ways to iterate a map in Java, with their advantages and disadvantages.

Author Gaurav Gandhi

0 upvotes

How to Print in Java? EASY

In this article, we'll learn the different approaches to printing in Java, which are the print(), println(), & printf() methods.

Author Pallavi singh

0 upvotes

In this blog, we will learn this Java List. We will learn about why it is used, syntax, parameters, and examples.

Author Riya Singh

0 upvotes

Generic Comparator in Java MEDIUM

In this blog, we will learn about Generic Comparator in Java. We will write code to further understand how Generic Comparator works.,

Author Gunjan Batra

0 upvotes

Volatile Keyword in Java EASY

In this blog, we will learn about Volatile Keyword in Java. We will understand its core concepts, its usage, and much more for better understanding.

Author Rinki Deka

0 upvotes

Arrow Operator Java EASY

In this blog, we will learn about the arrow operator in java. We will look at its syntax, implementation and benefits.

Author Riya Singh

0 upvotes

How to Use typeof in Java? EASY

In this article, we'll discuss how to use the typeof operator in Java and look at different approaches to determine the type of an object.

Author Pallavi singh

0 upvotes

Final Class in Java EASY

A final class in Java is a type of class that cannot be inherited by other classes.

Author Riya Singh

0 upvotes

What is Instance in Java? EASY

In this, we'll discuss the concept of instances in Java, their characteristics, and how they fit into the broader context of object-oriented programming.

Author Pallavi singh

0 upvotes

Difference Between Byte Code and Machine Code

Bytecode is a form of code generated from the compilation of source code. Whereas machine code is the CPU-understandable language stored in binary format.

Author Yashesvinee V

0 upvotes

Star Pattern in Java EASY

Creating a star pattern in Java involves using nested loops — one loop for the rows & another for the columns. These loops help in printing spaces & stars in the correct sequence to form the desired pattern.

Author Rinki Deka

0 upvotes

System Class in Java EASY

In this article, we will discuss the main features of the System class, like its fields, methods, and common use cases.

Author Ravi Khorwal

0 upvotes

Why is Java Platform Independent? EASY

To understand what Platform independence means, how is it a feature of Java, what happens in other languages in C++, and Why is Java Not Completely Platform Independent.

Author Ravi Khorwal

0 upvotes

Increment Date in Java EASY

In this article, we will learn about Increment Date in Java. We will write codes for local date, local time and many other functions in java.

Author Sanjana kumari

0 upvotes

Loose Coupling in Java MEDIUM

Coupling in Java is the measure of how much one class knows about the structure and properties of another class.

Author Pallavi singh

0 upvotes

Keywords in Java EASY

Explore the complete list of keywords in Java and understand their importance in Java programming. Learn how keywords in Java control the flow and structure of code.

Author Yashesvinee V

0 upvotes

Introduction to Variables

Learn about variables and how to use them in Java. Explore the different types of variables with examples.

Author Yashesvinee V

2 upvotes

Local Variable in Java EASY

In this article, we'll learn what local variables are, how to declare them, & see examples of how they're used. We'll also cover the concept of scope & how it relates to local variables.

Author Sinki Kumari

0 upvotes

Instance Variable in Java EASY

An instance variable in Java is a variable defined inside a class but outside any method, constructor, or block. It belongs to each object of the class and retains unique values for each instance.

Author Rishabhnsingh

0 upvotes

Introduction to Data Type

Today, we will learn about data types in java

Author Rhythm Jain

0 upvotes

Difference between Primitive and Non-Primitive Datatypes

In this blog, we will learn about different types of datatypes and what distinguishes them into Primitive and Non-Primitive Datatypes.

Author sai sambhab chaini

0 upvotes

Difference between List and Set in Java EASY

A list is a collection of elements, where each element has an index that starts from 0. A set is a collection of unique elements. It is unordered, so there is no indexing as in the list from 0 to n.

0 upvotes

Difference between Abstract Class and Interface in Java EASY

In this article, we will understand the characteristics of abstract classes & interfaces, discuss their unique features, & learn when to use each one. We will also see code examples to understand their use cases and implementation.

Author Rinki Deka

0 upvotes

This article shall discuss the concept of constants in the Java programming language.

Author Ankit Kumar

0 upvotes

How to Create Immutable Class in Java MEDIUM

To create an immutable class in Java, use final keyword for class, make fields private, and provide only getter methods. Read on to learn how to create immutable class in java.

Author Gaurav Gandhi

0 upvotes

Non Access Modifiers in Java EASY

In this article, we will discuss the different non-access modifiers in Java, their significance, and how to use them effectively.

Author Sinki Kumari

0 upvotes

Java Extend Multiple Classes EASY

In this blog, we will learn about Java Extend Multiple Classes. We will understand the basics of inheritance and composition and also write codes for better understanding,

0 upvotes

BigDecimal Class in Java EASY

The BigDecimal class in Java provides precise control over decimal numbers, supporting arithmetic, rounding, and scaling, often used for financial calculations.

Author lakshayhere

0 upvotes

Java vs .Net : Difference between Java and DotNet

Java is a platform-independent, open-source programming language, while .NET is a Microsoft framework supporting multiple languages. Java In this article, we are going to learn the difference between the Java and .net languages in detail.

Author Manan Singhal

0 upvotes

Java Stream EASY

In this blog, we will learn this Java Stream. We will learn about why it is used, syntax, parameters, and examples.

Author Sanjana kumari

0 upvotes

This article introduces you to the concept of java and ruby along with a detailed java vs ruby comparison.

Author 19RH1A05H6 Thanvi lahari Pendyala

0 upvotes

Scala and Java EASY

In this article, we will discuss Scala and Java, along with their features, differences, advantages, and disadvantages. We will also compare scala and java briefly on various parameters and with some basic codes.

Author Alankrit Srivastava

1 upvote

Hash Collisions in Java EASY

In this article, we will discuss the concept of hash collisions in Java and discuss different collision resolution techniques, with the help of examples to show their implementation.

Author Rinki Deka

0 upvotes

Sort String in Java EASY

In this blog, we will learn about Sort String in java. We will understand its core concepts, its usage, and much more for better understanding.

Author Sanjana kumari

0 upvotes

Convert String to Date in Java MEDIUM

To convert a String to a Date in Java, you can use different approaches. In this article, we will Convert String to Date in Java by using Instant Class, Time Formatter Class and SimpleDateFormat Class.

Author Gaurav Joshi

0 upvotes

Converting Long to Int in Java EASY

In this article, we will briefly discuss long and int datatype. Then we will go through different ways to convert long to int in Java.

Author Nikhil Joshi

0 upvotes

Functional Interface in Java EASY

In this article, we will discuss about the functional interface in Java. We will understand how this can be implemented in Java and why to use it.

Author mishrashriCodes

0 upvotes

Perfect Number in Java EASY

A perfect number is a positive integer that is equal to the sum of its proper divisors (excluding itself).

Author Riya Singh

0 upvotes

Range of Data Types in Java EASY

In this article, we will talk about the different data types available in Java. We will understand their characteristics, & learn how to use them effectively in our programs.

Author Sinki Kumari

0 upvotes

Methods to Print New Line in Java EASY

A new line (end of the line (EOL), line break) signifies the end of a line and the beginning of a new one. There are five methods to create a new line in Java. Read on to learn about them in detail.

Author Shaurya Singhal

0 upvotes

System.out.println in Java MEDIUM

In this article, we will learn about the java system out println method. To know more, you can check the complete article.

0 upvotes

Java Tokens MEDIUM

Java tokens are the smallest units of a program, including keywords, identifiers, literals, operators, and separators, used to construct Java code.

Author ManishKumar1103

4 upvotes

Cloneable Interface in Java EASY

In this article, we will discuss what the Cloneable interface is, how it is declared, and see some examples of how to use it in Java. We will also learn about deep copying using the clone() method.

Author Gaurav Gandhi

0 upvotes

Varargs in Java(Variable Arguments) MEDIUM

The Java varargs notion is a feature of the Java programming language that makes it easier to create methods that can accept a variable number of arguments.

Author Muskan Sharma

0 upvotes

Remove an Element From an Array in Java MEDIUM

In this article, we'll learn about the different ways to remove elements from an array in Java, including using a for loop, deleting an element by its value, handling duplicate elements, shifting elements within the array, & deleting elements from an ArrayList.

Author Riya Singh

0 upvotes

Difference‌ ‌Between‌ ‌Java ‌and‌ ‌JavaScript MEDIUM

Discover the differences between Java and JavaScript: meanings, features, uses, and key distinctions. Dive into FAQs for a comprehensive understanding of Java vs JavaScript.

Author Urwashi27

0 upvotes

Identifiers in Java EASY

In this article, we will discuss the concept of identifiers in Java, understand their importance, and learn the rules for defining them. We will also look at different examples of valid and invalid identifiers and discuss reserved words in Java.

Author Ravi Khorwal

0 upvotes

What is Literals in Java Programming EASY

In this article, we will discuss the different types of literals in Java, as well as their usage and limitations.

Author Ravi Khorwal

0 upvotes

Java Lambda Expressions EASY

This article covers the meaning, syntax, parameters, uses, functionality, and characteristics of Java lambda expressions. Explore lambda expression in Java with examples, advantages, and disadvantages.

Author Kanak Rana

1 upvote

isDigit Java EASY

Java isDigit() function serves to verify whether a provided character is a digit. It accepts a character or codepoint value as input and yields a boolean outcome.

Author Nikhil Joshi

0 upvotes

Collections in Java EASY

This blog will discuss set collection in Java. We will further discuss how to use the set and implement various types of operations of set collection in Java.

0 upvotes

Collections in Java MEDIUM

This blog will discuss set collection in Java. We will further discuss how to use the set and implement various types of operations of set collection in Java.

Author Ayush Mishra

1 upvote

Data Types And Identifier In Java EASY

In this article, we will discuss about the data types and identifiers in java.

Author Urwashi27

0 upvotes

Static Variable in Java EASY

In this blog, we will learn about static variable in java. We will understand its core concepts,and learn about its advantages, disadvantages and much more for better understanding.

Author Lekhika Ujiniya

0 upvotes

Difference Between Servlet and JSP MEDIUM

Servlet technology is utilized for web application development, and JSP serves the same purpose as Servlets.

Author Kanak Rana

0 upvotes

HttpSession Interface in Servlet MEDIUM

This article will teach us about HttpSession Interface in Servlet, its working, different methods, advantages and disadvantages, etc.

Author juhipathak

0 upvotes

Access Modifiers in Java MEDIUM

Access modifiers in Java, control the visibility of classes, methods, and variables. The four types of Access modifiers are public, protected, default, and private.

Author Yukti Kumari

0 upvotes

Learn Core Java Programming For Free With Coding Ninjas

In this blog, we will discuss how to learn core java programming for free with coding ninjas and what syllabus will be covered in this course.

Author Ayush Mishra

2 upvotes

Difference Between Checked and Unchecked Exception EASY

Checked exceptions in Java must be handled or declared, while unchecked exceptions (runtime exceptions) don't require explicit handling or declaration.

Author Gunjan Batra

1 upvote

Verify Java EASY

How to verify Java refers to the correct functioning of the Java version in your system. There exist numerous versions and methods to verify Java Version.

Author mishrashriCodes

0 upvotes

Final Keyword in Java EASY

In this blog, we will discuss this and the final keywords in java in deep detail with various examples.

Author Ayush Mishra

0 upvotes

How to get started with Deep Java Library? MEDIUM

In this blog, we will discuss deep java library. We will further discuss how to setup and use the deep java library.

Author Gaurav Gandhi

0 upvotes

Finalize() Method in Java MEDIUM

In this blog, we will discuss the Finalize Method in Java along with the syntax, uses in different scenarios, advantages, and disadvantages.

Author Nilesh Kumar

0 upvotes

Non Primitive Data Types in Java EASY

In this article, we will discuss data types in Java and further we will learn about Non Primitive Data Types in Java and their implementation.

Author Harshita Vyas

0 upvotes

HashCode() Method in Java MEDIUM

The hashCode() method in Java returns an integer hash code representing an object's value.

Author harsh008

0 upvotes

Method Signature in Java MEDIUM

In this blog, we will learn about method signature in Java along with the need for method signature, examples, and code.

Author Nilesh Kumar

0 upvotes

Java Program to Check Leap Year EASY

In this blog, we will be writing a leap year program in Java that takes a year as input and determines whether that year is a leap year or not.

0 upvotes

Runnable Interface in Java MEDIUM

In this article, we will discuss the runnable interface in java with examples. We will also discuss the implementation , errors, advantages and disadvantages associated with it.

Author mishrashriCodes

2 upvotes

Difference Between Callable and Runnable in Java MEDIUM

The Callable and Runnable interfaces in Java are both used to represent tasks that can be executed by another thread.

Author pranjal pratyush

1 upvote

Applet Life Cycle in Java MEDIUM

The Applet Life Cycle in Java includes init(), start(), paint(), stop(), and destroy(), defining its creation, running, display, suspension, and termination

0 upvotes

Difference Between a Java Application and a Java Applet MEDIUM

In this blog, we will learn about the difference between applet and application and some frequently asked questions.

Author Nilesh Kumar

0 upvotes

Java Programming Challenges MEDIUM

This blog discusses the most frequently asked Java programming questions with their solution with the best possible approach.

Author Sohail Ali

1 upvote

Packages

Package is a group of similar types of classes, interfaces and sub-packages.Package can be categorised in two forms, built-in package and user-defined package.There are many built-in packages such as java, lang, awt, javax, swing, net, io, util, sql etc. It helps organise your classes into a folder structure and make it easy to locate and use them. More importantly, it helps improve code reusability.

Packages in Java EASY

Packages in Java are used to group related classes and interfaces, providing modularity, preventing name conflicts, and improving code organization and reusability.

Author Nishant Rana

0 upvotes

Java Applet EASY

A Java Applet is a type of program that runs in a web browser. It was intended to be embedded in an HTML page and run on the client side.

Author Gaurav Gandhi

0 upvotes

java.util package

In this blog, we will be covering java.util package.

Author Mohammad Saalim

0 upvotes

The java.lang Package

This blog will cover the interfaces and classes of the java.lang package.

Author Yashesvinee V

0 upvotes

Control statements

Java compiler executes the code top to bottom. The statements in the code are executed according to the order in which they appear. However, It provides statements that can be used to control the flow of its code. Such statements are called control flow statements. It is one of the fundamental features of Java, which provides a smooth flow of program.Java provides three types of control flow statements selection statements, iteration statements, and jump statements.

Decision Statements in Java

This blog will cover the different Decisional control statements in Java.

Author Yashesvinee V

0 upvotes

Decision Making in Java EASY

In this article we have discussed Decision Making In Java Using If, Else-If, If-else-if and Switch Statements.

Author Anuradha_8356

0 upvotes

Enhanced For Loop In Java EASY

In this article, we will discuss the advantages, syntax, & working of the enhanced for loop, along with examples

Author Rahul Singh

0 upvotes

Conditional Statements in Java (If-Else Statement) EASY

This blog will discuss conditional statements in Java. We will learn about If, If-Else, and switch conditional statements in Java.

Author Ayush Mishra

0 upvotes

Control Statements in Java

In this article, we will discuss the different types of control statements in Java and understand how they can be used.

Author Gaurav Gandhi

0 upvotes

Iteration Statements in Java EASY

This article shall discuss the various iteration statements that are available in Java. We shall learn about each type of loop that can be used in Java.

Author Ankit Kumar

0 upvotes

For Loop in Java EASY

In this article, we'll discuss the syntax, parts, and functionality of the Java for loop. We'll also look into variations like nested loops, the for-each loop, and even the very famous infinite loop.

Author Sanjana kumari

0 upvotes

Loops in Java With Examples and Syntax EASY

Loops in Java include for, while, and do-while loops. We can control program flow, enhance efficiency, automate tasks, and iterate through data structures with Java loops.

Author Kushleen Waraich

0 upvotes

Break and Continue Statement in Java EASY

In this article, we will talk about the syntax & usage of break & continue statements in Java, along with practical examples to display their behavior.

Author Sinki Kumari

0 upvotes

Infinite For Loop in Java EASY

In this article, we will learn what an infinite for loop is, how it works, with example and it’s explanation.

Author Rahul Singh

0 upvotes

Jump Statements in Java MEDIUM

Jump statements in Java, like break, continue, and return, control the flow of execution, allowing you to exit loops, skip iterations, or return from methods.

Author Yashesvinee V

1 upvote

Break Statement in Java EASY

This article covers the concept of Break Statement in Java and its different implementations along with some frequently asked questions

Author Priyanshu Grover

0 upvotes

Iterable Interface in Java EASY

This blog explains the details of the Iterable Interface in Java and the difference between the Iterator and the Iterable interface in Java.

Author kittusinghkumar

0 upvotes

Nested If Statements in Java MEDIUM

A nested if statement is like a Russian doll of decisions, where one choice leads to another. It's used in programming just like regular ifs, but with added layers.

Author Akanksha Burnwal

0 upvotes

Operators

Operators are used for performing operations on variables and values. There are many types of operators in Java-like Unary Operator, Arithmetic Operator, Shift Operator, Relational Operator, Bitwise Operator, Logical Operator, Ternary Operator, and Assignment Operator.

Arithmetic Operator in Java

In this post, We will learn about Arithmetic operators in Java and various types of operators and expressions allowed by Java and how to use them using examples.

Author Sanjana Yadav

0 upvotes

This article will discuss the various unary operators and their examples in the Java programming language.

Author Ankit Kumar

1 upvote

Java OR Operator EASY

In this article, we will discuss the functionality and usage of the Java "or" operator, with code examples to clear any doubt.

Author Sinki Kumari

0 upvotes

Operator Overloading in Java EASY

In this article, we'll discuss what operator overloading is, its advantages, and why Java doesn't support it.

Author Rinki Deka

0 upvotes

Increment and Decrement Operators in Java EASY

In this article, we will discuss the different types of increment and decrement operators in Java, understand their syntax, and see how they can be implemented in our codes.

Author Sinki Kumari

0 upvotes

Conditional Operator in Java EASY

In this article, we'll discuss the conditional operator in Java, its types, usage, examples, and benefits.

Author Riya Singh

0 upvotes

Java Operators MEDIUM

In this article, we will learn about the different types of operators available in Java, which include arithmetic, unary, assignment, relational, logical, ternary, bitwise, & shift operators.

Author Rahul Singh

0 upvotes

Logical AND operator && EASY

This article will discuss the Logical AND operator && in a detailed manner, along with code examples in various programming languages.

Author siddharth sharma

2 upvotes

Bitwise Operators in Java EASY

Master Bitwise Operators in Java: Examples, Symbols, Syntax, and Functionalities. Explore All Types of Bitwise Operators in Java Programming.

Author APURV_RATHORE

0 upvotes

Shift Operators in Java EASY

This blog will cover the types and working of Shift Operators in Java.

Author Yashesvinee V

0 upvotes

Java Error “bad operand types for binary operator MEDIUM

In this blog, we will learn about bad operand types for binary operator in Java.

0 upvotes

Arrays

Java provides a data structure, the array, which stores a fixed-size sequential collection of elements of the same type. An array is used to store a collection of data, but it is often more useful to think of an array as a collection of variables of the same type.

This tutorial teaches you how to define array variables, build arrays, and process arrays using indexed variables.

Author Sanjana Yadav

2 upvotes

Arrays In Java EASY

Array in Java is a fixed-size, ordered collection of elements of the same data type, accessed via indices starting from 0.

Author Lokesh Sharma

6 upvotes

Single Dimensional Array

This blog will cover the Single Dimensional Array.

Author Nishant Rana

1 upvote

Multi-Dimensional Arrays in Java

In this blog, we will learn about Multi-dimensional arrays, their declarations, functionalities, and uses.

Author Rhythm Jain

0 upvotes

One Dimensional Array in Java EASY

In this article, we will discuss what one-dimensional arrays are, how they work, and their code implementation.

Author Gaurav Gandhi

0 upvotes

How to Find Length of Array in Java? EASY

In this article, we'll discuss different methods to determine the length of an array in Java, with proper examples & explanations for each approach.

Author Sinki Kumari

0 upvotes

Array Index Out of Bounds Exception in Java EASY

In this article, we'll talk about the ArrayIndexOutOfBoundsException - what it is, why it occurs, and how to avoid & resolve it in your code. We'll see proper code examples to understand this in real scenarios.

Author Rinki Deka

0 upvotes

How to Merge Two Arrays in Java? EASY

In this article, we will discuss different approaches to merging two arrays in Java, including using predefined functions, custom implementations, and Java's Collections framework and Stream API.

Author Riya Singh

0 upvotes

Java Array Indexof EASY

In this blog, we will learn about the Java Array Indexof method in detail.

Author Juhi Sinha

1 upvote

Character Array in Java EASY

In this article, we will learn the basics of character arrays in Java, like how to declare, initialize, access & modify elements.

Author Riya Singh

0 upvotes

How to Print Array in Java EASY

In this article, we will discuss different ways to print arrays in Java, like with the help of loops, built-in methods, and the Stream API.

Author Riya Singh

0 upvotes

Array vs Arraylist in Java EASY

In this article, we'll discuss the key differences between arrays & ArrayLists in Java. We'll check out how to create & use them with code examples. This article will clear all your doubts regarding Array vs ArrayList in Java

Author Sanjana kumari

0 upvotes

How to Return an Array in Java? EASY

In this article, we'll discuss how to return arrays from methods in Java, talking about both one-dimensional & multi-dimensional arrays.

Author Sanjana kumari

0 upvotes

Java Program to Find Second Largest Element in an Array EASY

In this article we will see both of the two methods of finding the second largest element like using array and collections.

Author Sinki Kumari

0 upvotes

ArrayList size() method in Java EASY

In this article, we will discuss the ArrayList size() method in detail, like its syntax, return values, and practical examples.

Author Pallavi singh

0 upvotes

Java Program to Find the Length or Size of an ArrayList EASY

In this article, we'll explore how to find the size of an ArrayList with clear examples and explanations. Let's dive in!

Author Riya Singh

0 upvotes

Arrays asList() in Java EASY

In Java, Arrays asList() is a utility method provided by the java.util.Arrays class that returns a fixed-size list backed by the specified array. It is useful for quickly converting an array into a List object.

Author Nikhil Joshi

0 upvotes

Remove Duplicates From Array in Java MEDIUM

In this article, we will discuss different techniques to remove duplicates from an array in Java, like using extra space, constant extra space, sets, frequency arrays, and hash maps.

Author Gaurav Gandhi

0 upvotes

This article shall discuss the final array in Java and its code implementation.

Author Ankit Kumar

0 upvotes

Reflection Array Class

This article shall discuss the reflection array class in Java.

Author Ankit Kumar

0 upvotes

util.Arrays vs reflect.Array

This article shall discuss the comparison between util.Arrays and reflect.Array in Java programming language.

Author Ankit Kumar

0 upvotes

Jagged array in Java EASY

A jagged array in Java is an array of arrays, where each element is a reference to another array. The sub-arrays can have different lengths, allowing for a non-uniform structure. In this blog, we’ll understand jagged arrays in Java and its implementation.

Author Indrajit Kumar

0 upvotes

How to Create Array of Objects in Java? MEDIUM

This article will discuss creating an array of objects in java. We will learn to declare, instantiate and two ways to initialise the array of objects.

Author sanchit0160

0 upvotes

Strings

String is a sequence of characters, For example: "hello" is a string containing a sequence of characters 'h' , 'e' , 'l' , 'l' , and 'o' . We use double quotes to represent a string in Java.In java, string is an immutable object which means it is constant and can not be changed once it has been created.

Why String is Immutable in Java? EASY

Discover why strings are immutable in Java, explore immutable objects, and learn about string memory usage and syntax.

Author Jaskirat Singh Saggu

2 upvotes

String Comparison EASY

This blog explains the details of different methods used for String comparison along with their syntax and examples.

Author kittusinghkumar

1 upvote

String Concatenation in Java EASY

This blog explains the details of different approaches used for String concatenation along with their syntax and examples.

Author kittusinghkumar

1 upvote

String Class Methods EASY

This blog contains the string class methods of the java programming language. Various examples are presented in the blog to explain the concept in detail.

1 upvote

Strings vs StringBuffer EASY

This blog explains the differences between String and StringBuffer, as well as a performance test to see how long they take to execute.

Author kittusinghkumar

1 upvote

How to Convert String to Long in Java EASY

This article will explain the different methods to accomplish this conversion. We'll learn this conversion using different methods like the parseLong() method, the valueOf() method, and the constructor of the Long class.

Author Rahul Singh

1 upvote

Convert String to Array in Java EASY

In this article, we'll discuss different methods of converting a string to an array in Java. We'll explain how to use the toCharArray() method, split() method, StringTokenizer class and manually convert each character.

Author Rinki Deka

0 upvotes

How to Declare String in Java? EASY

In this article, we will learn what strings are, how to create them, and the different interfaces & classes related to strings in Java.

Author Ravi Khorwal

1 upvote

Difference between Comparing string using == and .equals() Method in Java

In this article, we'll learn about the differences between using == and .equals() for string comparison in Java. We'll discuss the basics of each approach, with code examples, and will see when to use each one.

Author Sinki Kumari

1 upvote

How to Convert String to Json Object in Java EASY

In this article, we will learn how to convert a JSON string to a JSON object in Java using various libraries like Gson, JSON-Simple & Jackson. We will also see a complete code example of this conversion process.

Author Riya Singh

0 upvotes

StringBuffer Class

In this blog, we will cover StringBuffer Class.

Author Mohammad Saalim

0 upvotes

Difference between StringBuffer and StringBuilder Class EASY

In this article, we will learn about StringBuffer and StringBuilder classes and their differences with different code examples.

Author Rushali Patnaik

0 upvotes

StringBuilder Class in Java

Discover the StringBuilder class in Java, its syntax, constructors, and methods. This article provides detailed examples to enhance your understanding of StringBuilder in Java.

Author Yashesvinee V

0 upvotes

How to Declare String Array in Java EASY

In this article, we will look into the process of declaring, initializing, and working with string arrays in Java. We'll discuss many different techniques and use cases and why it is useful.

Author Sinki Kumari

0 upvotes

StringTokenizer in Java EASY

StringTokenizer in Java is a legacy class used to break a string into tokens based on delimiters, though String.split() is now preferred.

Author Yashesvinee V

0 upvotes

StringUtils IsEmpty EASY

This article will discuss the IsEmpty method of StringUtils class. We will learn to use the IsEmpty method to check if a CharSequence is empty or null.

Author sanchit0160

0 upvotes

Java Convert String to Boolean MEDIUM

This article discusses the concept to change string to boolean and ways to convert string to boolean in Java and Javascript.

Author Samikshya Sarangi

0 upvotes

Special String Operations in Java EASY

This article explains all the special string operations in Java String class with the help of various examples and programs.

Author Kushleen Waraich

0 upvotes

How to convert String to Float in Java? EASY

In this article, learn how to convert string to float in Java and float to string in Java with examples.

0 upvotes

Strings in Java EASY

Explore strings in Java with examples. Learn to create strings in various ways and understand Java string classes, including StringBuffer and StringBuilder.

Author vaishnavi pandey

1 upvote

String Methods in Java Java has a lot of String methods that allow us to work with strings.Here you will find all the string methods available in Java.

Functions

A function is a block of code that performs a specific task. If some functionality is performed at multiple places in software, then rather than writing the same code, again and again, we create a function and call it everywhere. This helps reduce code redundancy. Functions make maintenance of code easy as we have to change at one place if we make future changes to the functionality. Functions make the code more readable and easy to understand.

Types Of Methods

In this blog, we will be learning about Types Of Methods.

Author Mohammad Saalim

0 upvotes

How to Call a Method in Java? MEDIUM

Learn how to call a method in Java with this comprehensive guide. Understand Java method calls and enhance your coding skills with step-by-step instructions.

Author Mohammad Saalim

0 upvotes

Static Blocks In Java EASY

Static blocks in Java can be created using the static keyword. The static blocks in Java are automatically called once every time a Java class executes.

Author Shaurya Singhal

0 upvotes

Static and Instance Methods in Java MEDIUM

Instance methods in Java require an object of the class, while static methods can be called directly from the class without an object.

Author vaishnavi pandey

2 upvotes

Why Main Method is Static in Java? MEDIUM

This article explores why the main method is static in Java, covering its structure, purpose, and key components for program execution.

0 upvotes

Pass by Value and Pass by Reference in Java EASY

In this article, we will learn what pass by value & pass by reference mean, how Java handles them, & look at examples using both primitive types & objects.

Author Pallavi singh

0 upvotes

Method Overriding In Java EASY

Method overriding in Java allows a subclass to provide a specific implementation of a method already defined in its superclass.

Author Anuradha_8356

0 upvotes

Virtual Function in Java EASY

In this article, we will discuss the concept of virtual functions in Java, understand how they are used, and look into different examples to understand their implementation.

Author Gaurav Gandhi

0 upvotes

Difference between Static and Non Static Method in Java EASY

In this article, we will discuss the main differences between static and non-static methods, like how they are accessed, called, bound, overridden, allocated memory, initialized, and scoped with examples.

Author Ravi Khorwal

0 upvotes

Dynamic Method Dispatch or Runtime Polymorphism in Java MEDIUM

Learn about Dynamic Method Dispatch (Runtime Polymorphism) in Java, including method overriding, examples, advantages, disadvantages, and applications.

Author mishrashriCodes

1 upvote

Can we Overload or Override static methods in java? MEDIUM

This blog covered the topics of Overloading and Overriding static methods in java.

Author Gunjan Batra

1 upvote

Wait() Method in Java EASY

In this article, we'll look at the syntax, parameters, return value, and exceptions of the wait() method in Java.

Author Rinki Deka

0 upvotes

Method Hiding in Java EASY

This article will discuss the method hiding in java in detail with the help of some examples.

Author yuvatimankar

0 upvotes

Call by Value and Call by Reference in Java EASY

In Java, Call by value" passes a copy of the variable, so changes don't affect the original. Objects use references, but the reference itself is passed by value.

Author Saksham Gupta

0 upvotes

Collections swap() method in Java with Examples EASY

The Swap function in java as the name suggests is use to swap two values of a particular array with each other.In programming languages like Java we have to frequently use this swap function in different scenarios.

Author AkritiBhan

0 upvotes

Java Math.round() method with Examples EASY

In this article, we will discuss Java Math.round() method with Examples, which helps to round off decimal values to its nearest integer.

Author simransri

2 upvotes

Math pow() Function in Java EASY

Power function in java is typically implemented using the Math.pow() method. It calculates the power of a given base to a specified exponent, providing a convenient way to perform exponentiation in Java programs. Read on to lean more!

Author pranjal pratyush

1 upvote

In this article, we will discuss math pow, its implementation, and its usage in programming languages with some examples.

Author shruti_f97c

1 upvote

Collections.reverseOrder() Method in Java with Examples EASY

The reverseOrder() method in Java's Collections class helps sort a collection in reverse order by returning a special tool called a comparator.

Author kittusinghkumar

0 upvotes

Java Scanner Nextdouble() method MEDIUM

Discover the Java Scanner nextDouble() method with examples, outputs, parameters, and return values. Learn nextDouble in Java, complete with FAQs for better understanding.

Author dhananjay kumar

0 upvotes

parseInt() Method in Java MEDIUM

The parseInt() method in Java converts or parses the string representation of numeric data into actual integer values.

Author Riya Singh

1 upvote

OOPs

OOP or Object-Oriented Programming is a programming model or paradigm which revolves around the concept of “OBJECTS”.Objects can be considered as real-world instances of entities like class, that have some characteristics and behaviors.

What is an Object in OOPs(Object Oriented Programming) EASY

In this article, you will understand what is an object in oops, examples of objects, implementation and the difference between objects and classes.

Author Nidhi Kumari

4 upvotes

Classes and Objects in Java EASY

In this article, we will discuss classes and objects in Java language. We will also discuss their components and check out their examples.

Author simransri

0 upvotes

Anonymous Class In Java

In this article, we will talk about what anonymous classes are in Java. We will even explore different aspects of anonymous classes in Java.

Author Vidhi Sareen

0 upvotes

Abstract Class in Java EASY

An abstract class in Java is a blueprint that cannot be instantiated and can include abstract methods, which must be implemented by subclasses, and concrete methods that can be inherited.

Author Neelakshi Lahiri

0 upvotes

BigInteger in Java EASY

BigInteger in Java is a class in java.math for handling arbitrarily large integers. It supports operations like addition, subtraction, multiplication, division, and modular arithmetic.

Author Amit Singh

0 upvotes

Comparator Interface in Java MEDIUM

In this article, we will cover the Comparator Interface in Java Collection, its methods, and examples to solidify the understanding of the concept.

0 upvotes

Singleton Class in Java EASY

A Singleton class in Java ensures only one instance of the class is created during runtime. It provides global access to that instance, which is commonly used for resource management.

Author Ashish Sharma

0 upvotes

This blog will discuss constructors in java.

Author Saksham Gupta

3 upvotes

Instantiation in Java EASY

Instantiation in Java refers to the creation of a new object from a class. To instantiate a class, utilize the 'new' keyword along with the class name and any necessary arguments.

Author Monika Yadav

0 upvotes

Default Constructor in Java EASY

Default Constructor in Java not take any parameters and is automatically generated by the compiler if the programmer does not define any constructors. Read more to learn about default constructors in Java.

Author Aayoushee ahlawat

1 upvote

Parameterized Constructor in Java EASY

Parameterized constructors in Java define the initial state of an object by requiring one or more arguments during initialization.

Author Sinki Kumari

0 upvotes

Copy Constructor in Java EASY

In Java, a constructor is a piece of code that is similar to a method. This method is called when a new instance of a class is created.

Author Aditya Anand

1 upvote

Difference between Constructor and Method in Java EASY

Constructors and methods are two important concepts in object-oriented programming. Both are used to perform different tasks in a class and help in creating and manipulating objects.

Author siddharth sharma

0 upvotes

Constructor in Java EASY

A constructor in Java is a special method used to initialize objects. It has the same name as the class and is called automatically when an object is created.

Author Riya Singh

0 upvotes

Getter and Setter in Java EASY

This blog covers the concept of the getter and setter in Java along with its examples. Getter and Setter methods in java are primarily used to retrieve the value of a data member.

Author Aditya Gupta

0 upvotes

Constructor Overloading In Java EASY

In this article, we'll be learning about Constructor Overloading and its need in OOPs.

Author Akshit Pant

0 upvotes

Method Overloading and Method Overriding EASY

Method overloading is a technique where multiple methods in a class have the same name but different parameters.Method overriding is another important concept in Java that allows a subclass to provide a specific implementation of a method that is already provided by one of its parent classes.

Author Sanjana kumari

0 upvotes

Method Overloading in Java MEDIUM

This article introduces you to method overloading in Java along with detailed code and a description.

Author 19RH1A05H6 Thanvi lahari Pendyala

1 upvote

Private Constructors and Singleton Classes in Java EASY

In this blog, you will learn about the Private Constructors and Singleton classes in Java. We will discuss how they are implemented and used in a Java Program.

Author Pradeep Kumar

0 upvotes

Java Destructor EASY

A destructor in java is a method invoked during an object's destruction, primarily to release allocated memory and manage resources such as closing files, database connections, and network resources.

Author Pratyush Singh_Kmc

0 upvotes

Four Pillars of OOPS in Java EASY

Objects Oriented Programming is a programming style based on the idea of objects and classes to represent the Data. JAVA is based on object-oriented programming.

Author Rajkeshav

2 upvotes

Polymorphism in Java EASY

In this article, we'll explain what polymorphism is, the different types of polymorphism with examples, and the advantages and disadvantages of using it.

Author Sanjana kumari

0 upvotes

Aggregation in Java EASY

This article shall discuss the meaning of aggregation in Java with appropriate examples. Understand when to use Java Aggregation with FAQs.

Author Ankit Kumar

0 upvotes

Inheritance In Java EASY

This blog discusses in detail about Inheritance in Java giving a brief introduction about various types of Inheritance available in Java.

Author Raksha Jain

2 upvotes

Nested Interface in Java EASY

In this article, we will discuss the syntax of nested interfaces, look at examples of how they are used, & learn about their benefits.

Author Riya Singh

0 upvotes

Single Inheritance in Java EASY

Single Inheritance in Java simplifies class hierarchies by allowing a subclass to inherit properties and behaviors from a single superclass.

Author Yukti Kumari

6 upvotes

Difference Between Inheritance and Polymorphism MEDIUM

Inheritance is a mechanism in Object-Oriented Programming where an object acquires all the properties of the parent object and Polymorphism means having many forms.

0 upvotes

Disadvantages of Inheritance in Java EASY

In this article, we will discuss the concept of inheritance, with examples to understand its use and look into the disadvantages of using inheritance in Java.

Author Sanjana kumari

0 upvotes

Multilevel Inheritance in Java MEDIUM

In this article, we will learn multilevel inheritance in Java with examples: superclass, subclass, and extending classes for robust object-oriented programming.

Author vaishnavi pandey

5 upvotes

Why is Multiple Inheritance not supported in Java? EASY

In this article, we will discuss the reasons behind this design decision and discuss alternative approaches to achieve similar functionality in Java.

Author Sanjana kumari

0 upvotes

Multiple Inheritance in Java EASY

Multiple Inheritance is a powerful object-oriented programming concept where a class can inherit attributes and behaviours from more than one superclass.

2 upvotes

Abstraction In Java EASY

In this blog, we are going to ace an essential concept of java that is an abstraction in java. This is an important concept in object-oriented programming.

Author Deeksha Sharma

2 upvotes

Types of Interface in Java EASY

In this article, we will discuss the concept of interfaces in Java, such as how to declare them, their properties, and the different types of interfaces.

Author Riya Singh

0 upvotes

Difference between Inheritance in C++ and Java

The article will cover the differences between the inheritance in c++ and Java.

Author ThakurAman

0 upvotes

Hierarchical Inheritance in Java MEDIUM

Hierarchical inheritance is a type of inheritance in java where multiple derived classes inherit the properties of a parent class. It allows all the child classes to inherit methods and fields from their parent class.

Author Hari Sapna Nair

0 upvotes

Compile Time Polymorphism in Java EASY

Compile-time polymorphism in Java occurs through method overloading or operator overloading, where the method to be executed is determined at compile time.

Author Akshay Parashar

0 upvotes

Compile Time Polymorphism in Java EASY

Understand what is compile time polymorphism and how it facilitates method overloading and type checking in programming.

Author Saksham Gupta

0 upvotes

Super Keyword in Java EASY

In Java, the super keyword is used in object-oriented programming to refer to the superclass (or parent class) of a current object. In this article we will discuss common uses of Super keyword in java

Author Kushleen Waraich

0 upvotes

Encapsulation in Java EASY

This blog will discuss encapsulation in java.

Author Saksham Gupta

0 upvotes

Difference between Abstraction and Encapsulation EASY

In this blog, we will see the difference between Abstraction and Encapsulation with examples along with it's codes. Understand abstraction vs encapsulation with examples and FAQs.

Author Mehak Goel

0 upvotes

Difference Between Abstraction and Data Hiding in Java EASY

Abstraction simplifies complexity by showing essential details; data hiding restricts access to internal data using access modifiers for security. In this blog, we will see the Difference Between Abstraction and Data Hiding in Java with examples and its codes.

Author Aryan Raj

0 upvotes

In this blog, we will be discussing Interfaces in Java

Author Mohammad Saalim

0 upvotes

Callable Interface in Java EASY

The Callable interface in Java lets you run a class instance as a thread by implementing it. It's found in the java.util.concurrent package.

Author Sagar Mishra

0 upvotes

Marker Interface in Java MEDIUM

This blog covers the concept of marker interface in Java and the 3 examples of marker interface, i.e., serializable, cloneable, and remote interface.

Author Gaurav Gandhi

1 upvote

Difference between Comparable and Comparator MEDIUM

This blog covers the concept of Comparable and Comparator and the difference between Comparable and Comparator.

Author Aditya Gupta

0 upvotes

Garbage collector

In this blog, we will be discussing Garbage Collector.

Author Mohammad Saalim

0 upvotes

StringJoiner Class in Java EASY

This article will discuss StringJoiner Class and its applications.

Author Kumar Saurav

0 upvotes

Can outer java classes access inner class private members EASY

Learn how to access private members of inner Java classes from outer classes. Explore access modifiers & workarounds for efficient Java programming.

Author Vivek Tiwari

0 upvotes

List

List is an ordered collection of objects in which duplicate values can be stored. We can also store the null elements in the list. It contains the index-based methods to insert, update, delete and search the elements. Since a list preserves the insertion order, it allows positional access and insertion of elements. Let’s learn more about list.

ArrayList in Java EASY

This blog discusses the methods and implementation of ArrayLists in Java.

Author Yashesvinee V

1 upvote

Convert list to array in Java EASY

In this article, we will get to know how to convert a list to an array in java, and its programming with examples.

0 upvotes

Vector Class in Java EASY

This blog discusses the methods and implementation of the Vector class in Java.

Author Yashesvinee V

0 upvotes

How to Add Date in Arraylist Java EASY

This article will discuss How to Add Date in Arraylist Java using different methods and understand those methods with the help of some examples.

Author yuvatimankar

0 upvotes

Java ArrayList subList() Method EASY

In this article, we'll discuss how to use the subList() method in Java to create sublists from existing lists. We'll cover the syntax, parameters, return value, exceptions and examples to understand this in detail.

Author Rinki Deka

0 upvotes

Difference Between ArrayList and Vector in Java EASY

ArrayList and Vector are both collections in Java that can dynamically resize themselves to accommodate more elements as needed.

Author Sohail Ali

2 upvotes

Difference Between List and ArrayList in Java EASY

This article covers concepts about List and ArrayList interfaces in Java along with some key differences between them and some frequently asked questions.

Author Aayush Sharma

1 upvote

Abstract List EASY

This blog will cover the topic of the abstract list.

Author Ayushi Poddar

0 upvotes

Abstract Sequential List EASY

This blog will cover the concept of the abstract sequential lists along with an example and its various methods.

Author Ayushi Poddar

0 upvotes

CopyOnWriteArrayList

This blog discusses the methods and implementation of the CopyOnWriteArrayList class in Java.

Author Yashesvinee V

0 upvotes

Custom ArrayList EASY

This blog will discuss what custom ArrayList is and how to implement it in Java programming language, with example.

Author Jaskirat Singh Saggu

0 upvotes

ListIterator Method in Java MEDIUM

Java List Iterator is an Interface to iterate over a List in both directions, allowing element modification and index-based operations.

Author Aashna Luthra

0 upvotes

Queue

Queue is an interface available in java.util package and extended collection interface are used to hold the elements about to be processed in FIFO(First In First Out) order. Just like List, Java Queue is a collection of ordered elements but it performs insert and remove operations differently.

Abstract Queue EASY

This article discusses Abstract Queue.

Author RAJESH RUNIWAL

0 upvotes

Array Blocking queue EASY

This article discusses the Array Blocking queue.

Author RAJESH RUNIWAL

0 upvotes

ConcurrentLinkedQueue Class and its Methods EASY

In this post, With the assistance of examples, we will learn about the ConcurrentLinkedQueue class and its methods.

Author Sanjana Yadav

0 upvotes

Linked Blocking Queue EASY

In this article, we will cover the topic of Linked Blocking Queue and its syntax and example.

Author Mohammad Saalim

0 upvotes

Blockingqueue in Java EASY

In this article, we'll discuss the hierarchy of BlockingQueue, its declaration, implementing classes, syntax for creating objects, types, basic operations, & methods.

Author Sinki Kumari

0 upvotes

Linked Transfer Queue EASY

This article will discuss the Linked Transfer Queue and its syntax and implementation.

Author Mohammad Saalim

0 upvotes

What is a Circular Queue EASY

In this article, we'll learn everything about circular queues, their operations, and applications and we will learn how they optimize various computer science processes.

Author Sinki Kumari

0 upvotes

Priority Blocking Queue

This article will learn about the Priority Blocking Queue and its implementation and example.

Author Mohammad Saalim

0 upvotes

In this post, we will learn about deque(double-ended queue) in java with its examples.

Author Sanjana Yadav

0 upvotes

Introduction to Deque its applications MEDIUM

This article demonstrates the introduction to deque and its applications.

Author Aditya kumar

0 upvotes

Maps

Map contains values on the basis of key, i.e. key and value pair. Each key and value pair is known as an entry. A Map contains unique keys. A Map is useful if you have to search, update or delete elements on the basis of a key. Maps are used when you want to associate a key with a value and Lists are an ordered collection.

What is a Multimap in Java? EASY

In this article, it is described what is a multimap, what google’s guava library is, and how can we implement it.

0 upvotes

This blog will cover the EnumMap class and its various methods in Java.

Author Nishant Rana

0 upvotes

This article deeply discussed the HashSet and various methods, features, and performance of a HashSet.

Author Kashish Saxena

0 upvotes

In this blog, we will discuss HashSet.

Author Mohammad Saalim

0 upvotes

Introduction to Hash Map

Today, we will learn about Hash Map in java

Author Rhythm Jain

0 upvotes

Difference between HashMap and HashSet MEDIUM

In this article we discussed about Difference between HashMap and HashSet in complete detail.

Author Monika Yadav

1 upvote

HashMap entrySet() Method in Java EASY

The Java HashMap.entrySet() method is used to convert the elements within a HashMap into a Set.

Author AkritiBhan

1 upvote

In this blog, we will discuss WeakHashMap.

Author Mohammad Saalim

0 upvotes

LinkedHashMap in Java EASY

A LinkedHashMap in Java is a HashMap that maintains the insertion order or access order of elements, combining hashing with a linked list.

Author Mohammad Saalim

0 upvotes

IdentityHashMap in Java

Learn and explore the features, functions and implementation of the IdentityHashMap class.

Author Yashesvinee V

0 upvotes

ConcurrentHashMap in Java

ConcurrentHashMap in Java is a thread-safe and high-performance variant of HashMap designed for concurrent access. Learn and explore the features, functions and implementation of the ConcurrentHashMap class.

Author Yashesvinee V

0 upvotes

Java.util.Dictionary Class in Java EASY

The java.util.Dictionary class in Java is an abstract class that represents a key-value data structure. The Dictionary class is somewhat outdated and not widely used in modern Java programming.

Author Yashesvinee V

0 upvotes

Today, we will learn about SortedMap in java

Author Rhythm Jain

0 upvotes

TreeMap in Java EASY

TreeMap in Java is a Map implementation that stores key-value pairs in a sorted order based on the keys. It uses a Red-Black tree for storage, ensuring O(log n) time for operations like add, remove, and lookup.

Author Yashesvinee V

0 upvotes

flatMap() Method in Java EASY

In this article, we will get to know about Java flatMap(), how does it work and its examples.

0 upvotes

System.getenv() Method in Java EASY

This blog will cover a detailed explanation of the Java system getenv function. We will also see examples of how the genetv function works.

Author Aashna Luthra

0 upvotes

Wrapper Class

Wrapper classes in Java are used to convert primitive types (int, char, float, etc.) into corresponding objects.

Character Class in Java EASY

In this blog, you will learn about the Character class in Java, its field, and its methods.

Author Swaraj Ji Srivastava

1 upvote

Interface in Java MEDIUM

An interface in Java is nothing but a class blueprint, and it can have static, constant, and abstract methods.

Author Abhiyodaya Pandey

0 upvotes

Byte Class in Java

In this blog, you will learn about the Byte class in Java, its field, and its methods.

Author Swaraj Ji Srivastava

0 upvotes

Java Short Class

This blog mainly covers the Java Short Class, its declaration, different methods and fields. Every topic will be clear to you at the end of this blog.

Author Aniket Majhi

0 upvotes

Java Integer Class

This blog mainly covers the Java Integer Class, its declaration, different methods and fields.

Author Aniket Majhi

0 upvotes

Java Long Class

This blog post covers all the fundamentals of the java Long class and its various fields, methods, and constructors.

Author Bijay Kumar

1 upvote

Java Float Class EASY

The Float class in Java is a wrapper class for the primitive data type float. Java float class provides methods to handle special cases like NaN and infinity.

Author Bijay Kumar

0 upvotes

Java Double Class

In this post, we will learn about the Java Double class and the different types of methods and fields available in it.

Author Bijay Kumar

0 upvotes

Boolean Class in Java EASY

The Boolean class in Java wraps the primitive boolean type, providing methods like parseBoolean(), toString(), and constants TRUE & FALSE.

Author pankhurigoel_28

0 upvotes

Autoboxing and Unboxing EASY

In this blog, we will discuss a new feature of Java SE 5, named as Autoboxing and Unboxing in Java.

Author Aman kumar Chourasiya

0 upvotes

Type Conversion in Java with Examples EASY

Explore and Learn how to implement type conversion in Java with best practices, examples, and tips for ensuring robust communication in your Java applications.

Author Yashesvinee V

0 upvotes

Wrapper class in Java EASY

The wrapper class is used to wrap primitive data types. The eight classes of a package are known as wrapper classes in Java.

Author Sujal Modanwal

0 upvotes

Exception Handling

The mechanism of handling unexpected errors in a java program is called exception handling. It is a powerful mechanism to handle runtime errors, ClassNotFoundException, FileNotFoundException, IOException, etc. so that the normal execution flow of the program can be maintained.

Introduction to Exception Handling

This blog will cover the Introduction to Exception Handling in Java.

Author Nishant Rana

0 upvotes

Types of Error in Java EASY

In this article, we will learn different types of errors in Java with proper examples. We will also discuss how they can be detected, fixed as well as avoided.

Author Harshita Vyas

0 upvotes

ClassNotFoundException in Java EASY

This blog will discuss ClassNotFoundException in Java along with Java classpath, why it occurs, examples, and some measures to fix ClassNotFoundException.

Author Shivani Singh

0 upvotes

In Java, throw is used to explicitly throw an exception, typically within a method, to signal an error or unexpected condition.

Author Saksham Gupta

0 upvotes

In this blog, we will be covering the Throw keyword.

Author Mohammad Saalim

0 upvotes

Exception Hierarchy in Java MEDIUM

Discover Java exception hierarchy, types, JVM roles, exceptions vs. errors, and checked vs. unchecked exceptions. Master error handling in Java programming.

Author vaishnavi pandey

1 upvote

Multiple Catch Block in Java EASY

This article will explore the concept of multiple catch blocks in Java, including their syntax, examples, and best practices.

Author Gaurav Gandhi

0 upvotes

Try, catch, throw and throws in Java

In this blog, we will cover exception handling methods like try, catch, throw, and throws in java with examples.

Author Kashish Saxena

0 upvotes

Flow control in Try-Catch and Finally Blocks in Java

In this article, we have discussed flow control in try-catch and finally blocks and also discussed example programs containing their implementation in Java.

Author Vasu Bansal

0 upvotes

In this blog, we will be discussing the throws keyword.

Author Mohammad Saalim

0 upvotes

Exception Propagation in Java EASY

In this article, we will discuss exception propagation in Java in detail, like syntax, rules, and examples.

Author Rahul Singh

0 upvotes

Arithmetic Exception in Java EASY

In this article, we'll discuss Arithmetic Exceptions in detail, their definition, structure, constructors, occurrence, & handling techniques.

Author Sanjana kumari

0 upvotes

Java Try catch block

Java try-catch block: Learn the syntax and workings of try and catch blocks with examples. Explore how Java handles exceptions internally in a try-catch block.

Author Mohammad Saalim

2 upvotes

Built in Exceptions in Java EASY

In this article, we'll talk about Java's built-in exceptions, user-defined exceptions, & the difference between checked & unchecked exceptions. You'll learn how to handle exceptions effectively in your Java programs.

Author Rahul Singh

0 upvotes

Throwable Class in Java MEDIUM

In this article, we will talk about the Throwable class, its constructors, methods, and how to use it in Java.

Author Sanjana kumari

0 upvotes

Java lang ExceptionInInitializerError EASY

Learn about Java lang ExceptionInInitializerError with constructors, methods, examples, causes, resolve, handle, and recover in brief.

Author abhay_rathi2435

1 upvote

The Finally Block in Java

Learn about Exceptions and how they can be resolved. Focus mainly on the finally block in exception handling.

Author Yashesvinee V

0 upvotes

Final vs Finally vs Finalize MEDIUM

In this article, we will be learning about the key differences between final, finally, and finalize keywords in java.

Author soham Medewar

0 upvotes

Null Pointer Exception in Java EASY

In this article, we will discuss the Null Pointer Exception in Java. We will see the possible cases where we might encounter the Null pointer Exception and its different avoidance methods in Java.

Author Aniket Majhi

1 upvote

User-defined Custom Exception EASY

This blog will cover how we create User-defined Custom Exception

Author Ayushi Poddar

1 upvote

Exception Handling with Method Overriding in Java

Learn about Method Overriding and how to handle exceptions that occur in it.

Author Yashesvinee V

0 upvotes

How to solve exception in thread main java.lang.nullpointerexception? MEDIUM

In this article, we will see the most occurred java exception i.e. Exception in thread main java.lang.NullPointerException.

Author Manan Singhal

0 upvotes

Decoding throw and throws keywords in Exception Handling EASY

This blog summarises the use of the Decoding throw and throws keywords in Exception Handling, along with a quick overview of chained exceptions.

Author Ayushi Goyal

0 upvotes

InputMisMatchException in Java MEDIUM

The input mismatch exception is thrown when the input given by the user does not match the expected input type.

Author ManishKumar1103

0 upvotes

Exception Handling In Java HARD

Exception handling in Java manages runtime errors using try, catch, finally, and throw. It helps maintain program flow by catching exceptions and allowing for alternative actions or cleanup.

Author Neha Singh

2 upvotes

IOException in Java MEDIUM

IOException in Java is an exception that occurs during input/output operations, such as reading or writing files or streams.

Author Vivek Tiwari

1 upvote

When do Exceptions arise in Java Code Sequence? MEDIUM

In this blog, we will discuss when exceptions in Java arise in the code sequence, how we handle exceptions, and different types of exceptions in Java.

0 upvotes

Java I/O

In Java, streams are the sequence of data that are read from the source and written to the destination.An input stream is used to read data from the source and an output stream is used to write data to the destination. The java.io package contains all the classes required for input and output operations.

Introduction to Java I/O Streams EASY

Explore Java I/O operations with examples, understand Java I/O Streams, their significance, and types, including Standard I/O Streams. A complete guide to I/O streams in Java.

Author Vasu Bansal

1 upvote

Reader Class in Java

In this blog, you will learn about the Reader class in Java. We will discuss the different methods supported by the Reader class.

Author Pradeep Kumar

1 upvote

Writer Class in Java

In this article, we have extensively discussed the Writer class in Java and will see a sample program having the implementation of the Writer class.

Author Vasu Bansal

0 upvotes

File Input/Output EASY

In this blog, we will discuss file input/output

Author Mohammad Saalim

0 upvotes

nextLine() in Java EASY

nextLine() in Java reads an entire line of input (including spaces) until a line break, and returns it as a String. It's part of the Scanner class.

0 upvotes

Java Read File EASY

In this article, we'll learn different approaches to reading files in Java, which includes using java.nio.file. Files, java.io.BufferedReader, and Scanner classes.

Author Pallavi singh

0 upvotes

File Input Stream class

This blog will cover the file input stream class, package, data, methods.

Author Mohammad Saalim

0 upvotes

The FileOutputStream Class

This blog will discuss the constructors and methods of the FileOuputStream class in Java.

Author Yashesvinee V

0 upvotes

BufferedInputStream and BufferedOutputStream

This blog discusses the BufferedInputStream and BufferedOutputStream classes in Java

Author Yashesvinee V

0 upvotes

Java Thread Dump Analyser EASY

In this blog, we will learn about Java Thread Dump Analyser. We will start with the introduction and later will cover how to generate java dump. In the end, we will discuss common patterns you can see in java thread dump.

0 upvotes

FilterInput/OutputStream

In this blog, we will cover FilterInput/OutputStream

Author Mohammad Saalim

0 upvotes

Sequence Input Stream

In this blog, we will discuss SequenceInputStream

Author Mohammad Saalim

0 upvotes

BufferedReader Vs Scanner Class In Java EASY

The blog explains the difference between BufferedReader Vs Scanner Class in Java along with examples.

Author kittusinghkumar

0 upvotes

Covariant Return Type in Java MEDIUM

In this article, we will learn about covariant return type and its working in java. Covariant return type refers to the return type of an overriding method.

Author Lokesh Sharma

1 upvote

Multithreading in Java

Multithreading is a programming concept in which the application can create a small unit of tasks to execute in parallel. If you are working on a computer, it runs multiple applications and allocates processing power to them. If the programming language supports creating multiple threads and passes them to the operating system to run in parallel, it’s called multithreading.

Multithreading in Java MEDIUM

Multithreading extends the concept of multitasking, where operations within an application are divided into individual threads.

Author Yashesvinee V

1 upvote

Life Cycle Of A Thread EASY

In this blog, we shall cover the life cycle of a thread.

Author Mohammad Saalim

0 upvotes

Creating a Thread in Java

In this blog, we will discuss Creating a Thread, Java.lang.Runnable interface and Java.lang.Thread class.

Author Mohammad Saalim

0 upvotes

Thread scheduler

In this article, we will discuss the Thread scheduler, thread, scheduling, and process.

Author Mohammad Saalim

0 upvotes

Multiprocessing in Java EASY

In this article, we will discuss multiprocessing, its advantages and disadvantages, and how to implement it in Java with examples.

Author Sinki Kumari

0 upvotes

Thread Pool in Java EASY

In this article, we will learn what Thread Pool is, how it works, & its benefits in Java programming. We will also look at some code examples to understand its implementation better.

Author Pallavi singh

0 upvotes

Thread.sleep() in Java EASY

In Java, Thread.sleep() is a method used to pause the execution of the current thread for a specified period. It is typically used to introduce a delay in a program.

Author Mohammad Saalim

0 upvotes

Difference between Multithreading and Multitasking in Java EASY

In this article, we will discuss the differences between multitasking & multithreading in Java, their advantages, disadvantages, & key distinctions.

Author Riya Singh

0 upvotes

Start() method in thread

This article shall cover the Java Thread start() method and its syntax and implementation.

Author Mohammad Saalim

0 upvotes

Java ThreadPoolExecutor MEDIUM

ThreadPoolExecutor simplifies the handling of threads by reusing a fixed number of threads and managing tasks efficiently. This results in better performance and resource utilization.

Author Rinki Deka

0 upvotes

Types of Threads in Java MEDIUM

In this article, we will talk about the different types of threads available in Java & their characteristics. We will also discuss the benefits of multithreading with proper code examples.

Author Rahul Singh

0 upvotes

The article covers the implementation and core principle of shutdown hooks which are available in Operating systems

Author ThakurAman

0 upvotes

Difference between run() and start() method

The article covers the difference between the run and start() methods

Author ThakurAman

0 upvotes

Perform single task by multiple threads

This blog will cover how to perform a single task using multiple threads.

Author Nishant Rana

0 upvotes

Java Networking

Java is a premier language for network programming. Networking is a concept of connecting two or more computing devices together so that we can share resources.

Introduction to Java Networking EASY

In this blog, we will introduce you to the concept of networking in Java.

Author Rhythm Jain

0 upvotes

Socket Programming in Java

In this post, we will learn about Socket programming in Java with its classes, methods, and examples.

Author Sanjana Yadav

0 upvotes

In this post, we will learn about the java.net.URL class in Java with its constructors, methods, and examples.

Author Sanjana Yadav

0 upvotes

Java HttpURL Connection

In this post, we will learn about Java.net.HttpURLConnection class in Java with its constructors, methods, and examples.

Author Sanjana Yadav

0 upvotes

Tesseract OCR with Java MEDIUM

In this blog, we will learn about Tesseract OCR with Java. We will understand the meaning of tesseract OCr and later discuss the pitfalls and solutions of using this tool.

Author Gunjan Batra

0 upvotes

DatagramPacket and DatagaramSocket in Java

This blog discusses the DatagramPacket and DatagramPacket classes of Java in detail. It lists the constructors and methods of each class with examples.

Author Yashesvinee V

0 upvotes

Java InetAddress Class EASY

This blog explains the details of InetAddress Class in Java along with the details of IP addresses, their addressing modes, methods of InetAddress Class, and examples.

Author kittusinghkumar

0 upvotes

Server Socket Class in Java

In this article, we have extensively discussed the Server Socket Class in Java and understood its syntax and a sample code having the implementation of it.

Author Vasu Bansal

0 upvotes

URL class and method in Java

In this blog, you will learn about the URL class of Java. We will discuss how an object of a URL class is created and used in a Java Program.

Author Pradeep Kumar

0 upvotes

Difference between Connection-Oriented and Connectionless Services

In this blog, we will develop an understanding of data communication services and discuss the differences between connection-oriented data communication services and connectionless services.

Author falconfused

1 upvote

Java JDBC

JDBC is an acronym for Java Database Connectivity.we're going to take a look at JDBC which is an API for connecting and executing queries on a database.JDBC can work with any database as long as proper drivers are provided.

JDBC Architecture MEDIUM

JDBC is a Java API that is used to interact with databases, issue queries and commands, and process database result sets. Explore JDBC Architecture with its important components and FAQs.

Author yuvatimankar

1 upvote

Introduction to JDBC EASY

This article will discuss the JDBC (Java Database Connectivity). We shall discuss the components and architecture of JDBC with an example.

Author Ankit Kumar

0 upvotes

Difference Between JDBC and ODBC EASY

In this, we will discuss what JDBC and ODBC are. We will explore aspects like features, advantages and disadvantages between them that make them so distinctive?

Author Vidhi Sareen

0 upvotes

JDBC Connection in Java MEDIUM

In this blog, we will learn about the JDBC connection in Java, and then we will see its implementation with an example.

Author falconfused

1 upvote

Types of Statements in JDBC

JDBC has three main types of statements: Statement (for simple queries), PreparedStatement (for precompiled queries with parameters), and CallableStatement (for stored procedures). In this blog, we will learn about the different types of statements present in JDBC

Author sai sambhab chaini

1 upvote

Java Miscellaneous

In this blog,we’ll learn different concepts like Java RMI,Java Generics,Object cloning,JavaFX ,Java Lambda expression,Java memory management and also learn about ‘IS A’ relationship and ‘HAS A’ relationship.So what we’re waiting for let’s get started.

Reflection API in Java

This blog mainly covers the Reflection API in Java. You will get an insight into the Reflection API, its different uses and their implementation in Java.

Author Aniket Majhi

1 upvote

This blog will discuss the Log4j library, its need, vulnerability, how this vulnerability works, ways to mitigate it, and the pros and cons of logging.

Author Shivani Singh

0 upvotes

Remote Method Invocation In Java

This article will introduce you to the Remote Method Invocation API that you can use to build distributed applications in Java.

Author Pratyush Singh_Kmc

0 upvotes

Java Classpath EASY

Classes in Java programs are not loaded by the JVM all at once; rather, they are slowly found and loaded through dynamic loading.

0 upvotes

Running Java RMI Application

In this article, we will learn the implementation of a Remote Method Invocation(RMI) application in Java with the help of an example.

Author Pratyush Singh_Kmc

0 upvotes

Difference between Compiler and Interpreter in Java EASY

This article will discuss compilers and interpreters in java along with their advantages, disadvantages and particular use cases and key differences.

Author Aayush Sharma

0 upvotes

What is Cucumber? MEDIUM

In this blog, we will learn about What is Cucumber. We will understand its core concepts, its usage, and much more for better understanding.

Author Sinki Kumari

0 upvotes

Custom Exception in Java EASY

A custom exception in Java is a user-defined exception class that extends Exception or RuntimeException. Learn Java custom exception with examples and benefits.

Author Sanjana kumari

0 upvotes

What is J2ee? MEDIUM

In this blog, we will learn about What is J2ee. We will learn about its characteristics, features, and much more for better understanding.

Author Riya Singh

0 upvotes

Camel Case in Java EASY

Camel Case in Java is a naming convention where the first word is lowercase, and subsequent words start with an uppercase letter, e.g., myVariableName.

Author Aditya kumar

0 upvotes

Semaphores in Java EASY

In this article, we will learn what semaphores are, the different types of semaphores, how they work, & how to implement them in Java.

Author Riya Singh

0 upvotes

Executor Framework in Java EASY

In this blog, we will learn about the executor framework in Java. We will discuss types of executor frameworks and will later implement a simple executor framework in Java.

Author Gaurav Gandhi

0 upvotes

Deserialization in java MEDIUM

In this article, we will discuss serialization & deserialization in Java in detail, like their definitions, examples, advantages, & how they work, etc.

Author Rahul Singh

0 upvotes

In this article, we will discuss the key features of JPA, including different versions, how it works with Hibernate, the benefits of using an Object-Relational Mapping (ORM) tool, setting up JPA in your Java project, & working with different databases, including NoSQL.

Author Sanjana kumari

0 upvotes

Serializable Interface in Java EASY

In this article, we'll discuss the basics of the Serializable interface, like its declaration & usage, and a practical code example to help you understand how it works.

Author Ravi Khorwal

0 upvotes

Generics in Java MEDIUM

In this article we will be discussing the topic of generics in java, its usage and implementation.

Author Aditya Anand

1 upvote

Java Annotations EASY

This article explains what Java annotations are, their significance, and how you can use them in your coding projects. We will look at different types of annotations and see examples of how they are applied in real Java programs.

Author Riya Singh

0 upvotes

Object Cloning in Java EASY

In this blog, we will discuss the concept of object cloning in Java with examples. We will also discuss the application of object cloning.

Author Aman kumar Chourasiya

1 upvote

Lambda Expressions in Java

In this blog, we’ll learn about Lambda expressions in Java their syntax and understand them better with an example.

Author falconfused

0 upvotes

Prepared Statement Java EASY

A prepared statement is an object used in Java database connectivity (JDBC) that represents a precompiled SQL statement.

Author Ravi Khorwal

0 upvotes

Memory Management in Java EASY

This article covers memory management in java with its meaning and principles. Explore the JVM memory structure and garbage collection in java memory management.

Author Neha Singh

2 upvotes

Builder Design Pattern MEDIUM

Builder Design Pattern simplifies object creation by constructing complex objects step-by-step. It separates object construction from representation, enabling flexibility and reuse of code.

Author Rinki Deka

0 upvotes

Is-A Relationship in Java EASY

This blog will discuss what is-a relationship is and how to implement it in Java programming language, with example.

Author Jaskirat Singh Saggu

0 upvotes

Java Servlet API EASY

In this article, we'll learn about the key components of the Java Servlet API & see how to use them to build robust web applications.

Author Rinki Deka

0 upvotes

Has-A Relationship in Java EASY

This blog will discuss what has-a relationship is and how to implement it in Java programming language, with example.

Author Jaskirat Singh Saggu

0 upvotes

What is truncation in Java? MEDIUM

Truncation in Java is discarding the fractional part of a number during type conversion. In this blog, we’ll understand truncation in Java in detail.

Author Saksham Gupta

0 upvotes

Delegation Event Model in Java MEDIUM