Java Synchronizer Example

Countdownlatch

    public static void testcountdownlatch (String[] args)  {         final CountDownLatch start = new  Countdownlatch (1);         final countdownlatch end =  new countdownlatch (4);        final runnable  Runnable = new runnable ()  {              @Override             public void  run ()  {                 try {                     int id = new random (). Nextint (Ten);           &nbsP;         start.await ();                     SYSTEM.OUT.PRINTLN (ID  +  " start");                     thread.sleep (id * 1000);                     system.out.println ( id +  " end");                     end.countdown ();                 }                 catch  (interruptedexception e)  {           &nbsP;         throw new runtimeexception (e);                 }             }        };         new thread (runnable). Start ();         new thread (runnable). Start ();        new  Thread (runnable). Start ();         new thread (runnable). Start ();         start.countdown ();         try {            end.await ();         }        catch  ( Interruptedexception e)  {&nbsP;           e.printstacktrace ();         }        system.out.println ("All  End ");     }

Cyclicbarrier

    public static void testcyclicbarrier (String[] args)  {         final CyclicBarrier barrier = new  Cyclicbarrier (4, new runnable ()  {              @Override             public void  run ()  {                 system.out.println ("In handler");             }        });         Final runnable runnable = new runnable ()  {              @Override              public void run()  {                int  id = new random (). Nextint (Ten);                 try {                     for  (int i = 0; i  < 3; i++)  {                         system.out.println (id +  "  start ");                         thread.sleep (id * 1000);                          system.out.println (ID&Nbsp;+  " end");                         barrier.await ();                     }                 }                 catch  (interruptedexception |  brokenbarrierexception e)  {                     throw new runtimeexception (e);                 }             }        };       &nbsP; new thread (runnable). Start ();         new thread ( runnable). Start ();         new thread (runnable). Start ();         new thread (runnable). Start ();     }

Semaphore

    public static void testsemaphore (String[] args)  {         final semaphore semaphore = new semaphore (3);         final Runnable runnable = new  Runnable ()  {             @Override              public void run ()  {                 int id =  New random (). Nextint (Ten);                 try {                     semaphore.acquire ();              &nbSp;      system.out.println (id +  " start");                      Thread.Sleep (;               )      system.out.println (id +  " end");                 }                 catch  (interruptedexception e)  {                      e.printstacktrace ();                 }                 finally {                     Semaphore.release ();                 }            }         };        new thread (runnable). Start ();         new thread (runnable). Start ();         new thread (runnable). Start ();        new  Thread (runnable). Start ();     }

Synchronousqueue

    public static void testsynchronousqueue (String[] args)  {         final synchronousqueue<integer> sq =  new SynchronousQueue<> ();         new thread (new  runnable ()  {             @Override              public void run ()  {                 try {                      for  (int i = 0; i < 3; i++)  {                          thread.sleep (New raNdom (). Nextint (5)  * 1000);                         sq.put (i);                          system.out.println ("put "  + i);                     }                 }                 catch  (interruptedexception e)  {                      E.printstacktrace ();                 }            }        }). Start ();         new thread (new runnable ()  {              @Override              public void run ()  {                 for  (int i = 0; i <  3; i++)  {                     try {                         int m =  Sq.take ();                       &Nbsp; system.out.println ("take "  + m);                     }                     catch  ( Interruptedexception e)  {                         e.printstacktrace ();                     }                 }             }        }). Start ();     }

Exchanger

    public static void testexchanger (String[] args)  {         final Exchanger<byte[]> exchanger = new  Exchanger<> ();         new thread (new Runnable ()  {              @Override              public void run ()  {                 try {                     byte[] a  =  "123456". GetBytes ();                     byte[] b = exchanger.exchange (a);        &nbsP;            system.out.println ("123456 == >  " + new string (b));                 }                 catch  (interruptedexception e)  {                     e.printstacktrace ();                 }             }        }). Start ();         new thread (new runnable ()  {              @Override             &nBsp;public void run ()  {                 try {                     byte[] a =  "456789". GetBytes ();                      Byte[] b = exchanger.exchange (a);                     system.out.println ("456789 ==> "  + new string (b));                 }                 catch  (interruptedexception e)  {                     e.printstacktrace ();                 }             }        }). Start ();     }

Java Synchronizer Example