Java program to implement mouse events.

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class Mouse extends Frame implements MouseListener {

Mouse()

{

}

// main class

public static void main(String[] args)

{

// create a frame

JFrame f = new JFrame("MouseListener");

// set the size of the frame

f.setSize(600, 100);

// close the frame when close button is pressed

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

// create anew panel

JPanel p = new JPanel();

// set the layout of the panel

p.setLayout(new FlowLayout());

// initialize the labels

label1 = new JLabel("no event ");

label2 = new JLabel("no event ");

label3 = new JLabel("no event ");

// create an object of mouse class

Mouse m = new Mouse();

// add mouseListener to the frame

f.addMouseListener(m);

// add labels to the panel

p.add(label1);

p.add(label2);

p.add(label3);

// add panel to the frame

f.add(p);

f.show();

}

// this function is invoked when the mouse is pressed

public void mousePressed(MouseEvent e)

{

// show the point where the user pressed the mouse

label1.setText("mouse pressed at point:"

e.getX() " " e.getY());

}

// this function is invoked when the mouse is released

public void mouseReleased(MouseEvent e)

{

// show the point where the user released the mouse click

label1.setText("mouse released at point:"

e.getX() " " e.getY());

}

// this function is invoked when the mouse exits the component

public void mouseExited(MouseEvent e)

{

// show the point through which the mouse exited the frame

label2.setText("mouse exited through point:"

e.getX() " " e.getY());

}

// this function is invoked when the mouse enters the component

public void mouseEntered(MouseEvent e)

{

// show the point through which the mouse entered the frame

label2.setText("mouse entered at point:"

e.getX() " " e.getY());

}

// this function is invoked when the mouse is pressed or released

public void mouseClicked(MouseEvent e)

{

label3.setText("mouse clicked at point:"

e.getX() " "

e.getY() "mouse clicked :" e.getClickCount());

}

}