Java Lock Example

The following is a sample code for a multithreaded lock mechanism:

1  Packagelock;2 3 ImportJava.util.concurrent.locks.Lock;4 ImportJava.util.concurrent.locks.ReentrantLock;5 6  Public classThreadTest {7     Private intJ;8     PrivateLock lock =NewReentrantlock ();9     Ten      Public Static voidMain (string[] args) { OneThreadTest TT =Newthreadtest (); A          for(inti=0; i<2; i++){ -             NewThread (TT.NewAdder ()). Start (); -             NewThread (TT.NewSubtractor ()). Start (); the         } -     } -      -     Private classSubtractorImplementsrunnable{ +          Public voidrun () { -              while(true){ +                  A Lock.lock (); at                  -                 Try{ -System.out.println ("j--=" + j--); -}finally{ - Lock.unlock (); -                 } in             } -         } to     } +      -     Private classAdderImplementsrunnable{ the          Public voidrun () { *              while(true){ $                 Panax Notoginseng Lock.lock (); -                 Try{ theSystem.out.println ("J + +" + j + +); +}finally{ A Lock.unlock (); the                 } +             } -         } $     } $}

Java Lock Example