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






  1. Java Tutorial
  2. Thread
  3. synchronized
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