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


public class sampleimage extends JApplet implements ActionListener{

JButton b1;
JButton b2;
JButton b3;



 boolean home=false;
 boolean start=false;
 boolean credits=false;

 boolean a = false;
 boolean b = false;
 boolean c = false;

 Image welcome;
 MediaTracker mt;


public void init(){


 mt=new MediaTracker(this);

 welcome=this.getImage(this.getCodeBase(),"welcome.gif");
 



 b1= new JButton("START");
 b1.setActionCommand("b1");
 
 b2= new JButton("CREDITS");
 b2.setActionCommand("b2");

 b3 = new JButton("BACK");
 b3.setActionCommand("b3");

 Container c= getContentPane();
 c.setLayout(null);
 c.add(b1);
 c.add(b2);
 c.add(b3);
 b1.setBounds(150,100,75,50);
 b1.setBounds(150,200,75,50);
b1.setBounds(150,300,75,50);

 b1.addActionListener(this);
 b2.addActionListener(this);
 b3.addActionListener(this);


}   //Init end

 public void actionPerformed(ActionEvent ae){

 String x = ae.getActionCommand();
 if(x.equals("b1")) {
 start = true;
 credits = false;
 home = false;
 b1.setVisible(false);
 b2.setVisible(false);
 b3.setVisible(true);
 }
 if(x.equals("b2")) {
 start = false;
 credits = true;
 home = false;
b1.setVisible(false);
 b2.setVisible(false);
 b3.setVisible(true);
 }
 if(x.equals("b3")) {
 start = false;
 credits = false;
 home = true;
 b1.setVisible(true);
 b2.setVisible(true);
 b3.setVisible(false);
 }
     repaint();
}

public void paint(Graphics g){



 if(home){
  g.drawImage(welcome,85,50,this);
  
}
  if(start){


  Color car = new Color(244,244,244);
  g.setColor(car);
  g.fillRect(0,0,500,500);
  g.clearRect(0,0,500,500);
}
  if(credits){


  Color car = new Color(244,244,244);
  g.setColor(car);
  g.fillRect(0,0,500,500);
  g.clearRect(0,0,500,500); 
  }
}
}

cont.paintComponents(g);

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

public class sampleimage extends JApplet implements ActionListener {

	JButton b1;
	JButton b2;
	JButton b3;

	Container cont;

	boolean home = false;
	boolean start = false;
	boolean credits = false;

	boolean a = false;
	boolean b = false;
	boolean c = false;

	Image welcome;
	MediaTracker mt;

	public void init() {

		mt = new MediaTracker(this);

		// System.out.println(this.getCodeBase());

		welcome = this.getImage(this.getCodeBase(), "Penguins.jpg");

		b1 = new JButton("START");
		b1.setActionCommand("b1");

		b2 = new JButton("CREDITS");
		b2.setActionCommand("b2");

		b3 = new JButton("BACK");
		b3.setActionCommand("b3");

		cont = getContentPane();
		cont.setLayout(null);
		cont.add(b1);
		b1.setVisible(true);
		cont.add(b2);
		cont.add(b3);
		
		cont.setVisible(true);

		b1.setBounds(150, 100, 75, 50);
		b2.setBounds(150, 200, 75, 50);
		b3.setBounds(150, 300, 75, 50);

		b1.addActionListener(this);
		b2.addActionListener(this);
		b3.addActionListener(this);

	} // Init end

	public boolean isOptimizedDrawingEnabled() {
		return false;
	}

	public void actionPerformed(ActionEvent ae) {

		String x = ae.getActionCommand();
		if (x.equals("b1")) {
			start = true;
			credits = false;
			home = false;
			b1.setVisible(false);
			b2.setVisible(false);
			b3.setVisible(true);
		}
		if (x.equals("b2")) {
			start = false;
			credits = true;
			home = false;
			b1.setVisible(false);
			b2.setVisible(false);
			b3.setVisible(true);
		}
		if (x.equals("b3")) {
			start = false;
			credits = false;
			home = true;
			b1.setVisible(true);
			b2.setVisible(true);
			b3.setVisible(false);
		}
		repaint();
	}

	public void paint(Graphics g) {
		
		home = true;

		if (home) {
			
			// g.drawImage(welcome, 85, 50, this);
			g.drawImage(welcome, 300, 100, this);
						
		}
		if (start) {

			Color car = new Color(244, 244, 244);
			g.setColor(car);
			g.fillRect(0, 0, 500, 500);
			g.clearRect(0, 0, 500, 500);
		}
		if (credits) {

			Color car = new Color(244, 244, 244);
			g.setColor(car);
			g.fillRect(0, 0, 500, 500);
			g.clearRect(0, 0, 500, 500);
		}
		cont.paintComponents(g);
	}
}