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Threads - Programming

Q1:

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

A Object

B Thread

C Runnable

D Class

ANS:A - Object

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.