Determining If the Current Thread Is Holding a Synchronized Lock : synchronized « Thread « Java Tutorial

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Java Tutorial » Thread » synchronized

10. 11. 12. Determining If the Current Thread Is Holding a Synchronized Lock


public class Main {

  public static void main(String[] argv) throws Exception {

    Object o = new Object();



    System.out.println(Thread.holdsLock(o));

    synchronized (o) {

      System.out.println(Thread.holdsLock(o));

    }

  }

}

10. 11. synchronized
	10. 11. 1.	Test Synchronized method
	10. 11. 2.	Test Unsynchronized method
	10. 11. 3.	This program is not synchronized.
	10. 11. 4.	This program uses a synchronized block.
	10. 11. 5.	Flag Communication
	10. 11. 6.	Waiting on an object
	10. 11. 7.	wait() and notify() must only be issued inside a synchronized block
	10. 11. 8.	guarantee that threads are woken in the same order in which they waited
	10. 11. 9.	creating a piped communications system between two threads.
	10. 11. 10.	Handle concurrent read/write: use synchronized to lock the data
	10. 11. 11.	A synchronized collection with Collections.synchronizedCollection
	10. 11. 12.	Determining If the Current Thread Is Holding a Synchronized Lock

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