New in Java: java applet program using multithreading

Question

I am trying to write a program, which should move the words "Java Platform2" from left to right every time we 'refresh'.
Can you please advise what is wrong in the logic??
import java.applet.*;
import java.awt.*;
import java.lang.*;
public class Ch61appth extends Applet implements Runnable
int i=30;
int x=10;
int y=30;
Thread t,cur;
     public void start()
          t=new Thread(this);
          t.start();
     public void paint(Graphics g)
          g.setColor(Color.blue);
          g.drawString("Java Platform2",x+i,y);
     public void run()
               if ((x+i)<400)
                    {     i=i+20;
                    else
                    {     i=20;
          //cur=new Thread.currentThread();
          repaint();

Answer 1

thanks for reply
i tried using for loop. Earlier also i had tried using while loop with condition t==Thread.currentThread()
The problem i am facing is the string just does not move and even after clicking refresh, it appears at same locations.
CAN U ADVISE>
bye
kumar