JAVA生产者消费者(线程同步)代码学习示例

public class ProducerConsumerTest {

public static void main(String []args){
Container con = new Container();
Producer p = new Producer(con);
Consumer c = new Consumer(con);
new Thread(p).start();
new Thread(c).start();
}

}

class Goods{
int id;
public Goods(int id){
this.id=id;
}

public String toString(){
return "商品"+this.id;
}
}

class Container{//容器采用栈，先进后出
private int index = 0;
Goods[] goods = new Goods[6];

public synchronized void push(Goods good){
while(index==goods.length){//当容器满了，生产者等待
try {
wait();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
goods[index]=good;
index++;
notifyAll();//当生产者放入商品后通知消费者
}

public synchronized Goods pop(){
while(index==0){//当容器内没有商品是等待
try {
wait();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
index–;
notifyAll();//当消费者消费了商品后通知生产者
return goods[index];
}
}

class Producer implements Runnable{

Container con = new Container();
public Producer(Container con){
this.con=con;
}

public void run(){
for(int i=0; i<20; i++){
Goods good = new Goods(i);
con.push(good);
System.out.println("生产了："+good);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

}

class Consumer implements Runnable{

Container con = new Container();
public Consumer(Container con){
this.con=con;
}

public void run(){
for(int i=0; i<20; i++){
Goods good=con.pop();
System.out.println("消费了："+good);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

}