线程间通信之消费者模式一notifyAll()

public class ProducerConsumer
{
public static void main(String argsp[]){
Dug dug = new Dug();
Producer pro = new Producer(dug);
Customer cus = new Customer(dug);
Thread t1 = new Thread(pro,"员工一号");
Thread t2 = new Thread(pro,"员工二号");
Thread t3 = new Thread(cus,"消费一号");
Thread t4 = new Thread(cus,"消费二号");

t1.start();
t2.start();
t3.start();
t4.start();
}
}


class Dug{

private int dugCount;

public synchronized void create(){
while(true){
while(dugCount>0){//将0改成flag或者改成9
try{
this.wait();
}catch(Exception e){

}

}
System.out.println(Thread.currentThread().getName()+"生产第"+(++dugCount)+"只烤鸭");

try{
this.notifyAll();
}catch(Exception e){

}
}



}


public synchronized void sale(){
while(true){
while(dugCount<1){
try{
this.wait();
}catch(Exception e){

}
}

System.out.println(Thread.currentThread().getName()+"消费第"+(dugCount--)+"只烤鸭");

try{
this.notifyAll();
}catch(Exception e){

}
}
}
}


class Producer implements Runnable
{
private Dug dug;

public Producer(Dug dug){
this.dug = dug;
}

public void run(){
dug.create();
}
}


class Customer implements Runnable
{
private Dug dug;

public Customer(Dug dug){
this.dug = dug;
}

public void run(){
dug.sale();
}
}