求助生产者消费者 - 黑马程序员技术交流社区

package day11;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
class Resource2{
private String name;
private int count = 1;
private boolean flag = false;
private final Lock lock = new ReentrantLock();
private final Condition condition_pro = lock.newCondition();
private final Condition condition_con = lock.newCondition();
public void set(String name) throws InterruptedException{
lock.lock();
try{
while(flag)
condition_pro.await();
this.name = name+"--"+count++;
System.out.println(Thread.currentThread().getName()+"......生产者....."+this.name);
flag = true;
condition_con.signal();
}
finally{
lock.unlock();
}
}
public void out() throws InterruptedException{
lock.lock();
try {
while(!flag)
condition_con.await();
System.out.println(Thread.currentThread().getName()+"消费者--"+this.name);
flag = false;
condition_pro.signal();
}
finally{
lock.unlock();
}
}
}
class Producer2 implements Runnable{
private Resource2 res;
Producer2(Resource2 res){
this.res = res;
}
public void run(){
while(true){
try{
res.set("商品");
}
catch (Exception e) {
}
}
}
}
class Consumer2 implements Runnable{
private Resource2 res;
Consumer2(Resource2 res){
this.res = res;
}
public void run(){
while(true){
try{
res.out();
}
catch(Exception e){
}
}
}
}
public class ProducerConsumerDemo2 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Resource2 res = new Resource2();
Producer2 pro = new Producer2(res);
Consumer2 con = new Consumer2(res);
Thread t1 = new Thread(pro);
Thread t2 = new Thread(pro);
Thread t3 = new Thread(con);
Thread t4 = new Thread(con);
t1.start();
t2.start();
t3.start();
t4.start();
}
}

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