Java Code

/**
 * Program that moves a button whenever the mouse gets near it.
 *  Shows example of MouseMotionListener events, null layout manager
 * Date  Mar 23, 2005
 * @author : E.S.Boese
 * E-id : sugar
 * Course : CS150
  */
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
					// need to listen for mouseMoved events
public class Annoying extends JApplet implements MouseMotionListener
{
   JButton winner = new JButton( "Click me and win a million" );
   	// need a Random object to randomly select a new x and y coordinates
   	//   when we move the button to a new location
   Random random = new Random( );		
   	// Rectangle object that determines the x and y coordinates 
   	//  that trigger a move of the button.
   	//  The coordinates are 10 pixels bigger than the actual button,
   	//   such that if the mouse gets within 10 pixels of the button, the button
   	//  will move
   Rectangle rectangle = new Rectangle( );
   
   public void init( )
   {
       	// null layout so we can place the button in an exact location
	setLayout( null );		
	// resize the applet to be 500 wide by 500 height pixels
	resize( 500,500 );
	// since we're using the null layout, we have to set the bounds on our
	// button.  x and y coordinates 100,200, width of 200 and height of 20
	winner.setBounds(100,200,200,20);
	// rectangle holds the buffer area, 10 pixels bigger than than the button
	// records the x and y coordinates 90,190, width 220 and height 40
	rectangle.setBounds( 90,190,220,40);  // "too close" boundary
	// listen for mouse movements on the applet 
	addMouseMotionListener(this);
	// add button to applet
   	add(winner);
   }
   public void mouseMoved( MouseEvent me ) 	// required method to write
   {
	int x = me.getX( );			// get x coordinate of the mouse location
	int y = me.getY( );			// get y coordinate of the mouse location
	if( rectangle.contains( x, y )  )	// method returns true if x,y inside rectangle
	{
    		// move the button to a new spot.
    		// to make sure it doesn't go off screen, the max x is 300
	    winner.setLocation( random.nextInt(300), random.nextInt(490) );
    		// reset the boundary for the rectangle, such that it's 10 pixels
    		//   buffer from the new location of the button
	    rectangle.setBounds( winner.getX( )-10, winner.getY( )-10, 
	            	winner.getWidth( )+20, winner.getHeight( )+20 );
	}
   }
   public void mouseDragged( MouseEvent me )	// required method to write
   {		// leave it blank since we don't want to use it
   }
}