Multithreaded programming Practice--realizing producer and consumer model

classClerk {Private intProducts ; Private intMaximum//Maximum storage capacity   PublicClerk (intmaxmum) {     This. Maximum =Maxmum; }   Public synchronized voidaddproduct () {if(Products >=maximum) {      Try{wait (); } Catch(interruptedexception e) {e.printstacktrace (); }    } Else{ Products++; System.out.println (Thread.CurrentThread (). GetName ()+ "Arrival" + Products + "product");    Notifyall (); }  }   Public synchronized voidsaleproduct () {if(Products > 0) {System.out.println (Thread.CurrentThread (). GetName ()+ "Buy the first" + Products + "product"); Products--;    Notifyall (); } Else {      Try{wait (); } Catch(interruptedexception e) {e.printstacktrace (); }    }  }}classProducerImplementsrunnable{PrivateClerk Clerk;  PublicProducer (Clerk clerk) { This. Clerk =clerk; }   Public voidrun () { while(true) {clerk.addproduct (); Try{Thread.CurrentThread (). Sleep (1); } Catch(interruptedexception e) {e.printstacktrace (); }    }  }}classConsumerImplementsRunnable {PrivateClerk Clerk;  PublicConsumer (Clerk clerk) { This. Clerk =clerk; }   Public voidrun () { while(true) {clerk.saleproduct (); Try{Thread.CurrentThread (). Sleep (10); } Catch(interruptedexception e) {e.printstacktrace (); }    }  }}/*** Created by Bruce on 2018/7/22.*/ Public classProducerandconsumer { Public Static voidMain (string[] args) {Clerk Clerk=NewClerk (20); Thread T1=NewThread (NewProducer (clerk)); Thread T2=NewThread (NewConsumer (clerk)); Thread T3=NewThread (NewConsumer (clerk)); Thread T4=NewThread (NewConsumer (clerk)); T1.setname (Producers); T2.setname ("Consumer 1"); T3.setname ("Consumer 2"); T4.setname ("Consumer 3");    T1.start ();    T2.start ();    T3.start ();  T4.start (); }}

Multithreaded programming Practice--realizing producer and consumer model