while(mousePressed)

jeg prøver at lave en kasse der skal bevæge sig, mens man holder knappen nede, det har jeg lavet på følgene måde:


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

public class hovedVindue extends Applet
{
  public Point center = new Point();
  public int fart = 2;
  public boolean sluppet = true;
  public boolean igang = true;
  public Thread slip = new Thread(new lytter());
 
  public hovedVindue()
  {
    slip.start();
    while(igang)
    {
      while(!sluppet)
      {
        try
        {
          Thread.sleep(100);
        } catch (Exception e)
        {}
        repaint();
      }
      try
      {
        Thread.sleep(100);
      } catch (Exception e)
      {}
    }
  }
 
  public void paint(Graphics g)
  {
    center.x += fart;
    g.drawRect(center.x-5,10,10,10);
  }
}


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

public class lytter extends hovedVindue implements Runnable
{ 
  public lytter()
  {}
 
  public void send(boolean klik)
  {
    sluppet = klik;
  }
 
  public void run()
  {
    muselytter lyt = new muselytter();
    lyt.lytt = this;
    this.addMouseListener(lyt);
  }
}



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

public class muselytter implements MouseListener
{
  public lytter lytt;

  public void mousePressed(MouseEvent me)
  {
    lytt.send(false);
  }
  public void mouseReleased(MouseEvent me)
  {
    lytt.send(true);
  }
  public void mouseClicked(MouseEvent me)
  {}
  public void mouseEntered(MouseEvent me)
  {}
  public void mouseExited(MouseEvent me)
  {}
}


det kan fint kompileres, men når jeg tester det, siger den:

java.lang.StackOverflowError
    at java.awt.Component.<init>(Unknown Source)
    at java.awt.Container.<init>(Unknown Source)
    at java.awt.Panel.<init>(Unknown Source)
    at java.awt.Panel.<init>(Unknown Source)
    at java.applet.Applet.<init>(Unknown Source)
    at hovedVindue.<init>(hovedVindue.java:14)
    at lytter.<init>(lytter.java:8)
    at hovedVindue.<init>(hovedVindue.java:11)
    at lytter.<init>(lytter.java:8)
    at hovedVindue.<init>(hovedVindue.java:11)
    at lytter.<init>(lytter.java:8)
    at hovedVindue.<init>(hovedVindue.java:11)
    at lytter.<init>(lytter.java:8)
osv.......