生产者和消费者成功解答synchroniz…

class Storage {//仓库类，用于生产产品和消费产品

  int n;

  boolean valueSet = false;

  synchronized int get() { //消费产品

    while(!valueSet)

      try {

        wait(); //消费者消耗了产品后需要wait，来等待生产者生产产品

      } catch(InterruptedException e) {

     

        System.out.println("InterruptedException caught");

      }

    try {

Thread.sleep(500);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

      System.out.println("Got: " + n);

      valueSet = false;

      notify(); //当产品消费了之后，需要唤醒被wait的put（）来生产产品

      return n;

  }

  synchronized void put(int n) { //生产产品

    while(valueSet)

      try {

        wait(); //当valueSet为true时，停止生产产品

      } catch(InterruptedException e) {

        System.out.println("InterruptedException caught");

      }

      this.n = n;

      valueSet = true;

      try {

Thread.sleep(500);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

      System.out.println("Put: " + n);

      notify(); //put（）生产了产品后需要唤醒消费者去get()消耗产品

  }

}

class Producer implements Runnable {

Storage q;

  Producer(Storage q) {

    this.q = q;

    new Thread(this, "Producer").start();

  }

  public void run() {

    int i = 0;

    while(true) {

      q.put(i++);

    }

  }

}

class Consumer implements Runnable {

Storage q;

  Consumer(Storage q) {

    this.q = q;

    new Thread(this, "Consumer").start();

  }

  public void run() {

    while(true) {

      q.get();

    }

  }

}

class consumer_producer {

  public static void main(String args[]) {

  Storage q = new Storage();

    new Producer(q);

    new Consumer(q);

    System.out.println("Press Control-C to stop.");

  }

}