class MyRunnable implements Runnable {
  String name;

  MyRunnable(String n) {
    name = n;
  }

  public void run() {
    int i;
    for (i = 0; i < 10; i++) {
      try {
        Thread.sleep(10); // 10ミリ秒お休み
      } catch (InterruptedException e) {
      }
      System.out.printf("%s: %d, ", name, i);
    }
  }
}

void main() {
  Thread ta = new Thread(new MyRunnable("A"));
  Thread tb = new Thread(new MyRunnable("B"));
  Thread tc = new Thread(new MyRunnable("C"));
  ta.start();
  tb.start();
  tc.start();
}