import java.applet.Applet;
import java.awt.Graphics;

public class OrologioApplet extends Applet implements Runnable{
	public void init(){
		Thread orologioApplet = new Thread(this);
		orologioApplet.start();
		Thread t1 = new Thread(new OrologioPendolo());
		t1.start();
	}
	paint...
	run...
	public void update(){
		repaint();
	}
}
public class OrologioPendolo extends OrologioApplet implements Runnable{
	public void run(){
		while(true){
			occhi();
		}
	}
	public void occhi(){
		...
		super.update();
	}
}