public class Test {
  int value;

  public static void main(String[] args) {
    final Test test=new Test();

    for(int i=0;i<2;i++) {
      final int id=i;
      new Thread(new Runnable() {
        public void run() {
          for(;;) {
            test.value=id;
            if (test.value!=id)
              System.out.println("id "+id+" "+test.value);
          }
        }
      }).start();
    }
  }
}