java--using wait and notify for producers and consumers

The realization of the classic consumer and producer:

Precautions:

1: Use Wait () in the loop, because when the thread obtains the lock, it is possible that other conditions are not met:

2: The common buffer pool is to be used with the lock mechanism:

1  Packagedemo;2 3 ImportJava.util.Vector;4 5  Public classMain {6 7      Public Static voidMain (string[] args) {8Vector<integer> pool=NewVector<integer>();9Producer producer=NewProducer (Pool, 4);TenConsumer consumer=NewConsumer (pool); One         NewThread (producer). Start (); A         NewThread (consumer). Start (); -     } -  the } -  - //producers - classProducerImplementsrunnable{ +     PrivateVector Pool; -     PrivateInteger size; +      A      PublicProducer (Vector pool, Integer size) { at          This. Pool =Pool; -          This. Size =size; -     } - @Override -      Public voidrun () { -          for(inti=0;i<7;i++){ in             Try { -SYSTEM.OUT.PRINTLN ("Produce" +i); to Produce (i); +}Catch(interruptedexception e) { -                 //TODO auto-generated Catch block the e.printstacktrace (); *             } $         }Panax Notoginseng     } -     Private voidProduce (intIthrowsinterruptedexception{ the          while(pool.size () = =size) { +             synchronized(pool) { ASystem.out.println ("Pool is full Producer are waiting,size is" +pool.size ()); the pool.wait (); +             } -         } $         synchronized(pool) { $ Pool.add (i); - Pool.notifyall (); -         } the     } - }Wuyi  the  - //Consumer Wu classConsumerImplementsrunnable{ -     PrivateVector Pool; About      PublicConsumer (Vector pool) { $          This. Pool =Pool; -     } -      - @Override A      Public voidrun () { +          for(inti=0;i<7;i++){ the             Try { -System.out.println ("Consume" +i); $ consume (); the}Catch(interruptedexception e) { the                 //TODO auto-generated Catch block the e.printstacktrace (); the             } -         } in     } the      the     Private voidConsume ()throwsinterruptedexception{ About          while(Pool.isempty ()) { the             synchronized(pool) { theSystem.out.println ("Pool is empty Consumer was Waiting,size is" +pool.size ()); the pool.wait (); +             } -         } the         synchronized(pool) {Bayi Pool.notifyall (); thePool.remove (0); the              -         } -     } the}

The execution results are:

java--using wait and notify for producers and consumers