Here, you will learn about adding event i.e. the rollover and click icon to a JButton component of swing in java.

Adding a Rollover and Pressed Icon to a JButton Component in Java

Here, you will learn about adding event i.e. the rollover and click icon to a JButton component of swing in java. Rollover means moving mouse pointer above the icon on the button. This program shows an icon or image on the button if the mouse pointer moves above the Button then your icon or image should be changed. When you click on the button then another image or icon should be shown on the button.

This program displays a button on a frame. Button shows different icons like: cut, copy and paste on different events. At first, the button shows the "cut" icon and when the mouse pointer moves above the button then the button shows the "copy" icon and when you click on the button then the "paste" icon is seen. Following are the screenshot of the application:

This the "cut" image which occurs by default when the program is rum from the command prompt.
Roll Over : Cut Image (By Default)

This is the "copy" image which occurs by default when user will rollover the image or button.
Roll Over : Copy Image (When the image is rollovered

And this is the "paste" image which occurs by default when user clicks on the button.
Roll Over : Paste Image (When the image is clicked)

Code Description:

These events are managed by the program using some APIs or methods as follows:

button.setRolloverIcon(Icon icon_name):
This is the method of the JButton class which is used to set the icon or image to a button for display when the mouse pointer rolls over the icon or the button. The icon or image is passed through the method as a parameter.

button.setPressIcon(Icon press):
This is the method of the JButton class which is used to set the icon or image to a object for displaying when the button is clicked. The icon or image is specified in the method argument as a parameter.

Here is the code of program:


import javax.swing.*;

import java.awt.*;



public class RolloverComponent{

  public static void main(String[] args) {

  JFrame frame = new JFrame("Adding a Rollover and Pressed Icon 

to a JButton Component");

  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

  JPanel panel = new JPanel();

  frame.add(panel,BorderLayout.CENTER);

  JButton cutbutton = new JButton(new ImageIcon("cut.gif"));

  panel.add(cutbutton);

  ImageIcon rollover = new ImageIcon("copy.gif");

  cutbutton.setRolloverIcon(rollover);

  ImageIcon press = new ImageIcon("paste.gif");

  cutbutton.setPressedIcon(press);

  frame.setSize(400,400);

  frame.setVisible(true);

  }

}

Download this example.

Adding a Rollover and Pressed Icon to a JButton Component in Java

Adding a Rollover and Pressed Icon to a JButton Component in Java

Adding a Rollover and Pressed Icon to a JButton Component in Java

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