Java Applet rotating a circle around a oval

import java.awt.*;
import java.applet.*;


public class Rotate extends Applet implements Runnable {
    
    
    public void init() {
        
    }
    
    public void start() {
        
        Thread t = new Thread(this);
        t.start();
        
    }
    
    public void run() {
        
        Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
        while (true){
            
            repaint();
            try {
                Thread.sleep(500);
            }
            catch (InterruptedException e) {
                //Do Nothing
            }
            Thread.currentThread().setPriority(Thread.MAX_PRIORITY); 
        }
    	
    }
        
    public void paint(Graphics g) {
    g.drawOval(75,20,150,115);
    g.fillOval(90,25,20,20);
    
    
    }

}