JButton In Java

JButton Example with ActionListener

import java.awt.event.*;  
import javax.swing.*;    
public class Jbutton_Class{  
public static void main(String[] args) {  
    JFrame f=new JFrame("JButton");  
    final JTextField tf=new JTextField();  
    tf.setBounds(60,60, 200,40);  
    JButton b=new JButton("Click Here");  
    b.setBounds(60,110,105,30);  
    b.addActionListener(new ActionListener(){  
    	public void actionPerformed(ActionEvent e){  
            tf.setText("Welcome to Coding Ninjas!!!! Ninjas");  
        }
    });
    f.add(b);f.add(tf);  
    f.setSize(500,500);  
    f.setLayout(null);  
    f.setVisible(true);   
}  
}  

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Output

JButton Example

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
public class MainClass {
   private JFrame mainFrame;
   private JLabel headerLabel;
   private JLabel statusLabel;
   private JPanel controlPanel;
 
   public MainClass(){
      prepareGUI();
   }
   public static void main(String[] args){
      MainClass  swingControlDemo = new MainClass();      
      swingControlDemo.showButtonDemo();
   }
   private void prepareGUI(){
      mainFrame = new JFrame("Java JButton Examples");
      mainFrame.setSize(400,400);
      mainFrame.setLayout(new GridLayout(3, 1));
      
      mainFrame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            System.exit(0);
         }        
      });    
      headerLabel = new JLabel("", JLabel.CENTER);        
      statusLabel = new JLabel("",JLabel.CENTER);    
      statusLabel.setSize(380,140);
 
      controlPanel = new JPanel();
      controlPanel.setLayout(new FlowLayout());

      mainFrame.add(headerLabel);
      mainFrame.add(controlPanel);
      mainFrame.add(statusLabel);
      mainFrame.setVisible(true);  
   }
   private static ImageIcon createImageIcon(String path, String description) {
      java.net.URL imgURL = MainClass.class.getResource(path);
      if (imgURL != null) {
         return new ImageIcon(imgURL, description);
      } else {            
         System.err.println("Couldn't find file: " + path);
         return null;
      }
   }   
   private void showButtonDemo(){
      headerLabel.setText("Control in action: Button"); 
 
      //resources folder should be inside the SWING folder.
      ImageIcon icon = createImageIcon("/resources/java_icon.png","Java");

      JButton okButton = new JButton("OK");        
      JButton javaButton = new JButton("Submit", icon);
      JButton cancelButton = new JButton("Cancel", icon);
      cancelButton.setHorizontalTextPosition(SwingConstants.LEFT);   

      okButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            statusLabel.setText("Ok Button clicked.");
         }          
      });
      javaButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            statusLabel.setText("Submit Button clicked.");
         }
      });
      cancelButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            statusLabel.setText("Cancel Button clicked.");
         }
      });
      controlPanel.add(okButton);
      controlPanel.add(javaButton);
      controlPanel.add(cancelButton);       
 
      mainFrame.setVisible(true);  
   }
}

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Output

Must Read Type Conversion in Java

Frequently Asked Questions

What is a JButton?

The JButton class is a push-button implementation. When pressed, this component generates an event and has a label. It can also have an image attached to it.

What are the AbstractButton class's subclasses?

JButton, JToggleButton, JCheckBox, and JRadioButton are the four types of buttons defined by Swing. All of these classes are subclasses of AbstractButton, which extends JComponent. As a result, all buttons have a set of characteristics in common.

What is the difference between JLabel and JButton?

A JButton is a push button that performs a specific action. JLabel is a component that displays a short text string, an image, or both at the same time.

Is JButton an interface?

The JButton class is used to generate a push-button control that can trigger an ActionEvent when pressed. The ActionListener interface should be implemented in order to handle a button click event. JButton is a container-addable component that extends the JComponent class.

Conclusion

In this blog, we learned about what is JButton in Java and the implementation, methods, and constructor of Jbutton in Java.

You can check out more information about other classes below:

• Jtable in java 
• Jtextarea in java
• Jlabel in java
  
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Super Keyword In Java

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