Actual use of lockInterruptibly for a ReentrantLock

lockInterruptibly() may block if the the lock is already held by another thread and will wait until the lock is aquired. This is the same as with regular . But if another thread interrupts the waiting thread will throw .lock()lockInterruptibly()InterruptedException

The logic is the same as for all interruptible blocking methods: it allows the thread to immediately react to the signal sent to it from another thread.interrupt

How this particular feature is used is up to the application design. For example, it can be used to kill a contingent of threads in a pool which are all waiting to aquire a lock.