Why is this not working? It compiles and then an applet window appears which says applet running, but nothing happens

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

public class MyThread extends Applet implements Runnable
{


public void run ()
{


Graphics g = getGraphics ();

g.setColor (Color.black);
g.fillOval (0, 0, 50, 50);


}
}

class RunMe extends Applet
{
public void paint (Graphics g)
{
MyThread runner = new MyThread ();

Thread runnerThread = new Thread (runner);
runnerThread.start ();

} // main method
} // Run class


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