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  1. Which three are methods of the Object class?

    1. notify();
    2. notifyAll();
    3. isInterrupted();
    4. synchronized();
    5. interrupt();
    6. wait(long msecs);
    7. sleep(long msecs);
    8. yield();

    2. A.
    1, 2, 4
    B.
    2, 4, 5
    C.
    1, 2, 6
    D.
    2, 3, 4

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    Answer : Option C

    Explanation :

    (1), (2), and (6) are correct. They are all related to the list of threads waiting on the specified object.

    (3), (5), (7), and (8) are incorrect answers. The methods isInterrupted() and interrupt() are instance methods of Thread.

    The methods sleep() and yield() are static methods of Thread.

    D is incorrect because synchronized is a keyword and the synchronized() construct is part of the Java language.

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