libjava/testsuite/libjava.lang/Thread_HoldsLock.java

   1 // Test that Thread.holdsLock() works.
   2
   3 class Lock {}
   4
   5 public class Thread_HoldsLock
   6 {
   7   static Lock lock = new Lock();
   8
   9   public static void main(String args[]) throws InterruptedException
  10   {
  11     Thread_HoldsLock thl = new Thread_HoldsLock();
  12
  13     thl.check();
  14     synchronized (lock)
  15       {
  16         thl.check();
  17       }
  18     thl.check();
  19   }
  20
  21   public void check()
  22   {
  23     Thread this_thread = Thread.currentThread();
  24     System.out.println(this_thread.holdsLock(lock));
  25   }
  26 }
  27