多线程模拟producer和consumer问题

package com.dijkstra;

public class Buffer {

private int contents;//

private boolean avaliable = false;

public synchronized int get() {

while (!avaliable) {

try {

this.wait();

} catch (InterruptedException e) {

e.printStackTrace();

}

}

int value = contents;

avaliable = false;

System.out.println("取出:\t" + contents);

this.notifyAll();

return value;

}

public synchronized void put(int value) {

while (avaliable) {

try {

this.wait();

} catch (InterruptedException e) {

e.printStackTrace();

}

}

contents = value;

avaliable = true;

System.out.println("存入\t" + contents);

this.notifyAll();

}

}

=======================================================

package com.dijkstra;

public class Producer extends Thread {

private Buffer buf;

private String name;

public Producer(Buffer buf, String name) {

super();

this.buf = buf;

this.name = name;

}

public void run() {

for (int i = 0;;) {

buf.put(i);

System.out.println("生产者" + name + "生产" + i++);

try {

Thread.sleep(500);

} catch (InterruptedException e) {

// TODO: handle exception

e.printStackTrace();

}

}

}

}

===================================================

package com.dijkstra;

public class Consumer extends Thread {

private Buffer buf;

private int number;

public Consumer(Buffer buf, int number) {

// super();

this.buf = buf;

this.number = number;

}

public void run() {

for (;;) {

//

int v = buf.get();

System.out.println("消费者" + number + "消费" + v);

}

}

}

===============================================================

package com.dijkstra;

public class ProducerConsumerProblem {

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

Buffer buf = new Buffer();

new Producer(buf, "\tprducer1\t").start();

new Consumer(buf, 1).start();

new Consumer(buf, 2).start();

new Consumer(buf, 3).start();

}

}

=================================================

运行结果：

存入 0

生产者 prducer1 生产0

取出: 0

消费者2消费0

存入 1

生产者 prducer1 生产1

取出: 1

消费者3消费1

存入 2

生产者 prducer1 生产2

取出: 2

消费者1消费2

存入 3

生产者 prducer1 生产3

取出: 3

消费者1消费3

存入 4

取出: 4

消费者2消费4

生产者 prducer1 生产4

存入 5

生产者 prducer1 生产5

取出: 5

消费者2消费5....................