Java Foundation---->java Multi-threaded use (eight)

Learn about the use of the Wait method and the Notify method in Java multi-threading.

Use of the wait and notify methods a simple instance of wait and notify

ImportJava.util.concurrent.TimeUnit; Public classWaitthreadtest { Public Static voidMain (string[] args)throwsException {Object Object=NewObject (); NewWaitthread (Object). Start (); TimeUnit.SECONDS.sleep (2);//wake up after 2 seconds        NewNotifythread (Object). Start (); }    Static classWaitthreadextendsThread {PrivateObject object; Waitthread (Object object) { This. Object =object; } @Override Public voidrun () {synchronized(object) {Try{System.out.println ("Before wait.");                    Object.wait (); System.out.println ("After wait."); } Catch(interruptedexception e) {e.printstacktrace (); }            }        }    }    Static classNotifythreadextendsThread {PrivateObject object; Notifythread (Object object) { This. Object =object; } @Override Public voidrun () {synchronized(object) {System.out.println ("Before notify.");                Object.notify (); System.out.println ("After notify."); }        }    }}

The results of the operation are as follows:

Before Wait.before notify.after notify.after wait.

If you modify Object.wait () to object.wait (1), the result of the operation is as follows:

Before Wait.after Wait.before notify.after notify.

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Java Foundation---->java Multi-threaded use (eight)