import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class MouseListening extends JApplet implements MouseListener
{
    private String teacherPet;
    
	public void init() 
	{
        this.addMouseListener(this);
        setBackground(Color.black);
        teacherPet = "Jason";     // or    teacherPet = new String();
	}

	public void paint(Graphics g) 
	{
        g.setColor(Color.black);
        g.fillRect(120, 120, 200, 200);     // clears previous word
        
        g.setColor(Color.green);            
        g.drawString(teacherPet, 130, 150); // displays new teacher's pet
	}
	
    public void mousePressed(MouseEvent event)
    {  
        if (event.getX() < 150)             // only if mouse clicked on left of screen
        {
            teacherPet = JOptionPane.showInputDialog("Enter your name");
            repaint();   
        }   
    }

    public void mouseReleased(MouseEvent event) {}
    public void mouseClicked(MouseEvent event) {}
    public void mouseEntered(MouseEvent event) {}
    public void mouseExited(MouseEvent event) {}  
}