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200分求生产者和消费者的多线程的代码,该如何解决

2011-12-29 
200分求生产者和消费者的多线程的代码RT[解决办法]public class ProducerConsumer {public static void ma

200分求生产者和消费者的多线程的代码
RT

[解决办法]

public class ProducerConsumer {
public static void main(String[] args) {
SyncStack ss = new SyncStack();
Producer p = new Producer(ss);
Consumer c = new Consumer(ss);
new Thread(p).start();
new Thread(p).start();
new Thread(p).start();
new Thread(c).start();
}
}

class WoTou {
int id; 
WoTou(int id) {
this.id = id;
}
public String toString() {
return "WoTou : " + id;
}
}

class SyncStack {
int index = 0;
WoTou[] arrWT = new WoTou[6];

public synchronized void push(WoTou wt) {
while(index == arrWT.length) {
try {
this.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
this.notifyAll();
arrWT[index] = wt;
index ++;
}

public synchronized WoTou pop() {
while(index == 0) {
try {
this.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
this.notifyAll();
index--;
return arrWT[index];
}
}

class Producer implements Runnable {
SyncStack ss = null;
Producer(SyncStack ss) {
this.ss = ss;
}

public void run() {
for(int i=0; i<20; i++) {
WoTou wt = new WoTou(i);
ss.push(wt);
System.out.println("生产了:" + wt);
try {
Thread.sleep((int)(Math.random() * 200));
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}

class Consumer implements Runnable {
SyncStack ss = null;
Consumer(SyncStack ss) {
this.ss = ss;
}

public void run() {
for(int i=0; i<20; i++) {
WoTou wt = ss.pop();
System.out.println("消费了: " + wt);
try {
Thread.sleep((int)(Math.random() * 1000));
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
[解决办法]
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Java code
class Producter extends Thread{Queue q;Producter (Queue q){this.q=q;}public void run(){for(int i=0;i<10;i++){q.put(i);System.out.println("producter :"+i);}}}class Consumer extends Thread{Queue q;Consumer(Queue q){this.q=q;}public void run(){while(true){System.out.println("Consumer:"+q.get());}}}class Queue //key{int value;boolean bFull=false;public synchronized void put(int i){if(!bFull){value=i;bFull=true;notify();//必须用在synchronized}try {wait();//必须捕获异常 // 等待消费者取走数据} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public synchronized int get(){if(!bFull)try{wait(); // 等待生产者写入数据} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}bFull=false; // 通知生产者数据已经被取走,可以再次写入数据notify();return value;}}public class test //测试类{public static void main(String[] args){Queue q=new Queue();Producter p=new Producter(q);Consumer c=new Consumer(q);p.start();c.start();}}问题补充:System.out.println("Consumer:"+q.get());}}}class Queue //key{int value;boolean bFull=false;public synchronized void put(int i){if(!bFull){value=i;bFull=true;notify();//必须用在synchronized}try {wait();//必须捕获异常 // 等待消费者取走数据} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public synchronized int get(){if(!bFull)try{wait(); // 等待生产者写入数据} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}bFull=false; // 通知生产者数据已经被取走,可以再次写入数据notify();return value;}}public class test //测试类{public static void main(String[] args){Queue q=new Queue();Producter p=new Producter(q);Consumer c=new Consumer(q);p.start();c.start();}} 

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