public class Leser extends Thread {
  Figur f;
  public Leser (Figur f) {
    this.f = f;
  }
  public void run () {
    for (int i=1; i<=30; i++) {
      System.out.print(f.getPosition() + " ");
      if (i % 10 == 0)
        System.out.println();
    }
  }
}