/* Listing2204.java */

class A2204
{
  int irgendwas;
  //...
}

class B2204
extends A2204
implements Runnable
{
   public void run()
   {
      int i = 0;
      while (true) {
         if (Thread.interrupted()) {
            break;
         }
         System.out.println(i++);
      }
   }
}

public class Listing2204
{
   public static void main(String[] args)
   {
      B2204 b = new B2204();
      Thread t = new Thread(b);
      t.start();
      try {
         Thread.sleep(1000);
      } catch (InterruptedException e){
         //nichts
      }
      t.interrupt();
   }
}