Answer Posted / puneet khanna

The threads in java follow Mutual exclusion( synchronized)
and co-operation;

for co-operation they need to talk to each other by messages
saying " i am waiting in the wait q anyone can acquire the
lock of the object" or" i have acquired the lock now by
notify() to the last thread who called wait() or by
notifyall() to all the threads who are in the wait q"

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