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Thread: synchronization

  1. #1
    Junior Member bassie's Avatar
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    Default synchronization

    hi could someone please help me understand how interference might occur in this program ?

    class ThreadTest implements Runnable {
    static String printString = null;
    private String threadName;
    ThreadTest(String s) { threadName = s; }
    public void run() {
    int i = 0;
    while (i < 100) {
    if (printString == null) {
    printString = threadName + (++i);
    } else {
    System.out.println(printString);
    printString = null;
    }
    }
    }
    public static void main(String[] args) {
    Thread t1 = new Thread(new ThreadTest("a"));
    Thread t2 = new Thread(new ThreadTest("b"));
    t1.start();
    t2.start();
    }
    }

    its meant to print a1 to a100 and b1 to b100...


  2. #2
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    Default Re: synchronization

    I think you first need to understand concept of threads very clearly........
    lets try this way
    if the output is as you expected....what's the use of setting priority of a thread?

  3. #3
    Super Moderator Norm's Avatar
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    Default Re: synchronization

    its meant to print a1 to a100 and b1 to b100...
    What does it currently print when its executed? Do you expect something else to print?
    Please explain.
    If you don't understand my answer, don't ignore it, ask a question.

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