Java: How can a thread wait on multiple objects?

Question

A thread can use Object.wait() to block until another thread calls notify() or notifyAll() on that object.

But what if a threa

Answer 1

A thread cannot wait on more than one object at a time.

The wait() and notify() methods are object-specific. The wait() method suspends the current thread of execution, and tells the object to keep track of the suspended thread. The notify() method tells the object to wake up the suspended threads that it is currently keeping track of.

Useful link : Can a thread call wait() on two locks at once in Java (6) ?