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  1. import java.util.concurrent.locks.*;
  2.  
  3. class Example {
  4.     static void performOperationInCriticalSection() {}
  5.  
  6. 	public static void main(String[] args) {
  7. 		ReentrantLock myLock = new ReentrantLock();
  8. 		try {
  9. 		    myLock.lock();
  10. 		    performOperationInCriticalSection();
  11. 		    myLock.unlock();
  12. 		}
  13. 		finally {
  14. 		    if (myLock != null) {
  15. 		        myLock.unlock();
  16. 		    }
  17. 		}
  18. 	}
  19.  
  20. 	static {
  21. 		Thread.currentThread().setUncaughtExceptionHandler(
  22. 			(Thread t, Throwable x) ->
  23. 				x.printStackTrace(System.out)
  24. 		);
  25. 	}
  26. }
Runtime error #stdin #stdout 0.12s 4386816KB
comments (?)
stdin 
Standard input is empty
stdout 
java.lang.IllegalMonitorStateException
	at java.util.concurrent.locks.ReentrantLock$Sync.tryRelease(ReentrantLock.java:151)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.release(AbstractQueuedSynchronizer.java:1261)
	at java.util.concurrent.locks.ReentrantLock.unlock(ReentrantLock.java:457)
	at Example.main(Main.java:15)
https://ideone.com/vtQonC
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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