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Thread: Waiting for another thread to finish

  1. #1
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    Default Waiting for another thread to finish

    I have a method with two threads (1 &2) which run at the same time. The current thread must stop right after the ‘thread2.start()’ statement until thread2 & thread1 are finished. There appears to be multiple approaches to do this but I find them confusing. Can anybody point to me a simple approach to accomplish this? Join does not appear to work since thread 1 & 2 must run at the same time. Thanks in advance




    Runnable storm = new Storm();
    Runnable UpdatePB = new UpdatePB();

    //these two threads must run at the same time
    thread1 = new Thread(storm);
    thread2 = new Thread(UpdatePB);

    thread1.start();
    thread2.start();


    //code must stop here until thread2 is finished


  2. #2
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    Default Re: Waiting for another thread to finish

    Why do you say join doesn't work? What have you actually tried?

    Recommended reading: Joins (The Java™ Tutorials > Essential Classes > Concurrency)
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    Default Re: Waiting for another thread to finish

    try {
    thread2.join();
    }
    catch(InterruptedException e) {
    System.out.println("Exception caught : " + e);
    }

    It works.

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