Use Of MouseListener

import java.applet.*;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

public class applet_class extends Applet implements MouseListener
{
	int x,y;
	String str = "null";

	public void init()
	{
		addMouseListener(this);
	}

	@Override
	public void mouseClicked(MouseEvent e) 	//when a mouse is clicked within in the applet
	{
		x=e.getX();	//to take x axis
		y=e.getY();	//to take y axis
		
		showStatus("Mouse Clicked at ("+x+","+y+")");
		str = "Mouse Clicked at ("+x+","+y+")";
		repaint();	//to call paint method
	}

	@Override
	public void mouseEntered(MouseEvent e) 	//when mouse come back to applet
	{
		showStatus("Mouse Entered");		
	}

	@Override
	public void mouseExited(MouseEvent e)	//when mouse exit from an applet 
	{
		showStatus("Mouse Exited");		
	}

	@Override
	public void mousePressed(MouseEvent e) 	//when you press something within the applet
	{
		showStatus("Mouse Pressed");
	}

	@Override
	public void mouseReleased(MouseEvent e) //when you released the mouse
	{
		showStatus("Mouse Released");		
	}
	
	public void paint(Graphics g) 	//draw graphics or o/p to the screen
	{
		g.setFont(new Font("Times New Roman",Font.BOLD,50));
		g.drawString(str, 120, 120);
	}
	
}