The JButton class which extends AbstractButton class that is used to create a button. JButton supports ActionEvent, that means when a button is clicked, an ActionEvent is generated.

JButton class having three commonly used Constructors, such as:

1. JButton(): creates a button with no text and icon.
2. JButton(String str): creates a button with the specified text.
3. JButton(Icon i): creates a button with the specified icon object.

Let's see an example for displaying an image on the button.

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class JButtonDemo extends JFrame 
{
	JButtonDemo()
	{
		JButton b1 = new JButton("save");      //Creating a save Button. 
		JButton b2 = new JButton("delete");   //Creating a delete Button.  
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
		setLayout(new FlowLayout());		//setting layout using FlowLayout object  
		setSize(300, 300);			//setting size of Jframe 
		add(b1);		                //adding save button to frame. 
		add(b2);		                //adding delete button to frame. 
		setVisible(true);
	}
	public static void main(String[] args)
	{
		new JButtonDemo();
	}
}