java面试总结08_生产者消费者实例

面试的过程中，经常让写个消费者-生产者实例，这里有一个简单的实例：

阻塞队列的：

消费者：

public class Consumer implements Runnable {
    /**
     * 所有的数据会存在blockingDeque 里面，取blockingDeque就行
     */
    private final BlockingQueue blockingQeque;

    public Consumer(BlockingQueue block) {
        this.blockingQeque = block;
    }

    @Override
    public void run() {
        while (true) {
            //模拟耗时
            try {
                Thread.sleep(1000);
                decream(blockingQeque.take());
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    private void decream(int a) {
        System.out.println("thread name:" + Thread.currentThread().getName() + " 消耗:" + a);
    }
}

生产者：

public class Product implements Runnable {
    private final BlockingQueue blockingQeque;

    public Product(BlockingQueue block) {
        this.blockingQeque = block;
    }

    @Override
    public void run() {
        while (true) {
            try {
                blockingQeque.put(incream());
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

    }

    private int incream() {
        int a = new Random().nextInt(10);
        System.out.println("thread name:" + Thread.currentThread().getName() + " incream:" + a);
        return a;
    }
}

public static void main(String[] args) {

        BlockingQueue blockQueue=new ArrayBlockingQueue(10);
        Product product=new Product(blockQueue);
        Consumer consumer1=new Consumer(blockQueue);
        Consumer consumer2=new Consumer(blockQueue);
        new Thread(product).start();
        new Thread(consumer1).start();
        new Thread(consumer2).start();
    }

运行结果：