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  1. Which class or interface defines the wait(), notify(),and notifyAll() methods?

    2. A.
    Object
    B.
    Thread
    C.
    Runnable
    D.
    Class

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    Answer : Option A

    Explanation :

    The Object class defines these thread-specific methods.

    Option B, C, and D are incorrect because they do not define these methods. And yes, the Java API does define a class called Class, though you do not need to know it for the exam.

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