// Use join().

class JoinThreads {
  public static void main(String[] args) {
    System.out.println("Main thread starting.");

    MyThread mt1 = new MyThread("Child #1");
    MyThread mt2 = new MyThread("Child #2");
    MyThread mt3 = new MyThread("Child #3");

    try {
      mt1.thrd.join();
      System.out.println("Child #1 joined.");
      mt2.thrd.join();
      System.out.println("Child #2 joined.");
      mt3.thrd.join();
      System.out.println("Child #3 joined.");
    }
    catch(InterruptedException exc) {
      System.out.println("Main thread interrupted. ");
    }
    System.out.println("Main thread ending.");
  }
}

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