Wait () / wait (timeout) / sleep (wait)?

Question

What is the difference between wait () and wait (timeout). It is expected that wait () should wait for a notification call, but why do we wait (timeout)?

What is the difference between sleep (timeout) and wait (timeout)?

Answer 1

wait (timeout) will return if the thread is still waiting after the timeout expires. This refers to a freeze notification, for polling low-power users, etc. Sleep (timeout) will not wake up before the timeout expires; wait (timeout) - either a call to notify () or a timeout, whichever comes first.

Quote from JavaDoc:

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Answer 2

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Answer 3

wait() wait(timeout) , wait() notify(). wait(timeout) > 0 "", notify() .

Answer 4

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