If any threads are waiting on this condition then they are all woken up. Each thread must re-acquire the lock before it can return from {@code await}.
Implementation Considerations
An implementation may (and typically does) require that the current thread hold the lock associated with this {@code Condition} when this method is called. Implementations mustdocument this precondition and any actions taken if the lock is not held. Typically, an exception such as {@link IllegalMonitorStateException} will be thrown.
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