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();
    }
  }
}