programming challenge in java-2

import java.applet.*;
import java.awt.*;
/*<APPLET CODE="k.java" HEIGHT=400 WIDTH=900></APPLET>*/
public class k extends Applet implements Runnable
{
    Image img[]=new Image[2],p;
    int x=0,y=0,limit=20,i,width=60,height=60;
    int ext=(limit*limit)+width;
    Thread t,t1;
    public void init()
    {
        img[0]=getImage(getDocumentBase(),"Desert.jpg");
        img[1]=getImage(getDocumentBase(),"Hydrangeas.jpg");
    }
    public void start()
    {
        t=new Thread(this);
        t.start();
    }

    public void run()
    {
    try{
        for(i=0;i<2;i++)
        {        x=0;

        
        for(int j=0;j<=limit;j++)
        {
            p=img[i];
            t.sleep(50);
            repaint();
            x=x+20;
        }
        limit=limit-1;
        }


    
        }catch(Exception e){}
}


public void paint(Graphics g)
    {
        if(i==0)
        {
            g.drawImage(p,x,30,width,height,this);
        }
        if(i>=1)
        {
            g.drawImage(p,x,30,width,height,this);
            g.drawImage(img[0],ext,30,width,height,this);
        }
    }

}

import java.applet.*;
import java.awt.*;
/*<APPLET CODE="k.class" HEIGHT=400 WIDTH=900></APPLET>*/
public class k extends Applet implements Runnable
{
Image img,im,p;
int x=0,y=0;
Thread t,t1;
public void init()
{
img=getImage(getDocumentBase(),"cc.gif");
im=getImage(getDocumentBase(),"ee.jpg");
}
public void start()
{
t=new Thread(this);
t.start();
}
public void run()
{
try
{
for(int i=0;i<=20;i++)
{
p=img;
repaint();
t.sleep(50);
x=x+20;
}
for(int i=0;i<=15;i++)
{
p=im;
repaint();
t.sleep(100);
y=y+20;
}
}
catch(InterruptedException e)
{
System.out.println("interrupted exception ");
}
}
public void paint(Graphics g)
{
if(p==img)
{
g.drawImage(p,x,20,100,100,this);
}
else
{
g.drawImage(img,x,20,100,100,this);
g.drawImage(p,y,20,100,100,this);
}
}
}