Java最简单的生产者消费者模型

生产者消费者模型就是两个线程轮流执行一段代码。下面用Java实现两个线程轮流进行打印。使用synchronized+wait/nofity实现。

public class Main {
    public static void main(String[] args) {
        TestRunnable runnable = new TestRunnable();
        Thread thread1 = new Thread(runnable);
        Thread thread2 = new Thread(runnable);
        thread1.setName("producer");
        thread2.setName("consumer");
        thread1.start();
        thread2.start();
    }
}

class TestRunnable implements Runnable {

    public synchronized void test() throws InterruptedException {
        for (int i = 0; i < 20; i++) {
            Thread.sleep(500);
            this.notify();
            System.out.println(Thread.currentThread().getName() + " running");
            this.wait();
        }
        notifyAll();//唤醒所有线程
    }

    @Override
    public void run() {
        System.out.println(Thread.currentThread().getName() + " start");
        try {
            test();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println(Thread.currentThread().getName() + " end");
    }
}

运行结果

producer start
consumer start
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
producer running
consumer running
consumer end
producer end

Process finished with exit code 0