生产者消费者问题--BlockingQueue

public class App {

    public static void main(String[] args) {

        BlockingQueue<Integer> queue = new ArrayBlockingQueue<>(6);
        Producer producer = new Producer(queue);
        Consumer consumer = new Consumer(queue);

        producer.produce(5);
        consumer.consume(4);
        producer.produce(3);
        consumer.consume(2);
    }
}

class Producer {
    private BlockingQueue<Integer> queue;

    public Producer(BlockingQueue<Integer> queue) {
        this.queue = queue;
    }

    public void produce(final int val) {
        new Thread() {
            public void run() {
                try {
                    int surplus = val;
                    while (surplus > 0) {
                        queue.put(1024);
                        surplus--;
                        System.out.printf("%s plan to produce (%d),actually produce (%d),queue size (%d) n",Thread.currentThread().getName(),val,1,queue.size());
                    }
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }.start();
    }
}

class Consumer {
    private BlockingQueue<Integer> queue;

    public Consumer(BlockingQueue<Integer> queue) {
        this.queue = queue;
    }

    public void consume(final int val) {
        new Thread() {
            public void run() {
                int surplus = val;
                try {
                    while (surplus > 0) {
                        queue.take();
                        surplus--;
                        System.out.printf("%s plan to consume (%d),actually consume (%d),queue.size());
                    }
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

            }
        }.start();
    }
}