SpringLayout in Java

Fields of SpringLayout

The field is a member variable of a class that represents a value. Some of the mainly used fields of SpringLayout in Java are described below:

• static String BASELINE − This field specifies the baseline of a component.

• static String EAST − This field specifies the right edge of the rectangle that bounds an element.

• static String HEIGHT − This field specifies the height of the rectangle, framing a UI component of the container.

• static String HORIZONTAL_CENTER − This field specifies the horizontal center of the rectangle bounding a UI element of the container.

• static String NORTH − This field specifies the top edge of the rectangle framing a UI element of the container.

• static String SOUTH − This field specifies the bottom edge of the rectangle bounding a component.

• static String VERTICAL_CENTER −This field specifies the vertical center of the rectangle framing a UI element of the container.

• static String WEST − This field specifies the left edge of the rectangle bounding a component.

• static String WIDTH − This field specifies the width of the rectangle framing a UI element of the container.

Methods of SpringLayout

A method is a set of codes, which can be called anytime and anywhere in the whole execution process. It is a subprogram, and it returns a value. Some of the commonly used methods are described below:

Methods Inherited

SpringLayout in Java also inherits methods from the following class:

• java.lang.Object

SpringLayout Example

Program to Implement SpringLayout in Java.

import javax.swing.*;
import java.awt.*;

public class CodingNinjasSpringExample   
{
    public static void main(String argvs[])  
    {
        JFrame.setDefaultLookAndFeelDecorated(true);
        JFrame SpFrm = new JFrame("Coding Ninjas");
        
        SpFrm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        SpFrm.getContentPane().setBackground(Color.ORANGE);
        SpFrm.setSize(350, 250);
        Container cntt = SpFrm.getContentPane();
        SpringLayout sprLayout = new SpringLayout();
        SpFrm.setLayout(sprLayout);
        
        Component SplBtn1 = new JButton("Coding Ninjas");
        Component SplBtn2 = new JButton("Technical Blog");
        Component SplBtn3 = new JButton("Gaurav Bashisht");
        Component SplBtn4 = new JButton("Java Tutorial");
        
        SpFrm.add(SplBtn1);
        SpFrm.add(SplBtn2);
        SpFrm.add(SplBtn3);
        SpFrm.add(SplBtn4);
        
        sprLayout.putConstraint(SpringLayout.WEST, SplBtn1, 24, SpringLayout.WEST, cntt);
        sprLayout.putConstraint(SpringLayout.NORTH, SplBtn1, 10, SpringLayout.NORTH, cntt);
        sprLayout.putConstraint(SpringLayout.WEST, SplBtn2, 24, SpringLayout.WEST, cntt);
        sprLayout.putConstraint(SpringLayout.NORTH, SplBtn2, 40, SpringLayout.NORTH, SplBtn1);
        sprLayout.putConstraint(SpringLayout.WEST, SplBtn3, 14, SpringLayout.EAST, SplBtn1);
        sprLayout.putConstraint(SpringLayout.NORTH, SplBtn3, 50, SpringLayout.NORTH, cntt);
        sprLayout.putConstraint(SpringLayout.WEST, SplBtn4, 14, SpringLayout.EAST, SplBtn1);
        sprLayout.putConstraint(SpringLayout.NORTH, SplBtn4, 10, SpringLayout.NORTH, cntt);
        
        SpFrm.setVisible(true);
    }
}

You can also try this code with Online Java Compiler

Run Code

OUTPUT

Frequently Asked Questions

What does “void putConstraint(String e1, Component c1, int pad, String e2, Component c2)” do?

“ void putConstraint(String e1, Component c1, int pad, String e2, Component c2)” Links the edges of components of two different components with fixed space between the edges.

What does “void putConstraint(String e1, Component c1, Spring s, String e2, Component c2)” do? 

“void putConstraint(String edg1, Component com1, Spring s, String edg2, Component com2)” Links edge edg1 of component com1 to edge edg2 of component com2.

What does setVisible(true) is used for?

It is a method that lets the frame appear on the screen. If we do not include this in our code, the frame object will exist but will not display on the screen.

What is JButton in Java?

JButton in Java is a graphical element of the user interface which triggers some action when a user clicks on it. 

What is JFrame in Java?

JFrame is a container that inherits the properties of Java AWT. It is used in graphics design, and it works like the main window.

Conclusion

In this blog, we came to know about SpringLayout in Java-like: what are its fields, what are the commonly used methods of SpringLayout, methods that it inherits, and also seen an example to implement the SpringLayout in Java.

Also read,

• JVM and its architecture, 
• Java Development Kit 
• Constructors
• Swing Components in Java

Refer to our guided paths on Coding Ninjas Studio to learn more about C programming, DSA, JavaScript, etc. Enroll in our courses and refer to the mock test and problems available. Take a look at the interview experiences and interview bundle for placement preparations.

Do upvote our blog to help other ninjas grow.

Happy Learning!