Java生產者和消費者(源碼)（面試）

本篇文章來自本人實踐，生產者和消費者問題在面試中也是經常被問及到，上代碼

package com.ruider.currentTest;

public class ProducerAndConsumer {

    private static Resource resource = new Resource();
    public static void main (String[] args) throws InterruptedException{
        ProducerAndConsumer producerAndConsumer = new ProducerAndConsumer();
        Consumer consumer1 = new Consumer(producerAndConsumer.resource);
        Producer producer1 = new Producer(producerAndConsumer.resource);

        Thread consumer = new Thread(consumer1,"consumer");
        Thread producer = new Thread(producer1,"producer");

        producer.start();
        consumer.start();

        //主線程等待1秒，使生產者和消費者兩個線程執行
        Thread.sleep(1000);

    }

    //資源類
    public static class Resource {

        //先生產後消費
        private volatile boolean flag = false;

        public boolean getFlag() {
            return flag;
        }

        public void  setFlag(boolean flag) {
            this.flag = flag;
        }
    }


    //消費者
    public static class Consumer implements Runnable {

        private Resource resource;
        public Consumer(Resource resource) {
            this.resource = resource;
        }
        @Override
        public void run () {
                synchronized (resource) {
                    while(true) {
                        try{
                            if(!resource.getFlag()) {
                                resource.wait();
                            }
                            System.out.println("消費者---------消費");
                            Thread.sleep(1000);
                            resource.setFlag(false);
                            resource.notify();
                        }catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    }
            }
        }
    }

    //生產者
    public static class Producer implements Runnable {

        private Resource resource;
        public Producer(Resource resource) {
            this.resource = resource;
        }
        @Override
        public void run () {
                synchronized (resource) {
                    //獲取到鎖之後循環獲取資源
                    while(true) {
                        try{
                            if(resource.getFlag()) {
                                resource.wait();
                            }
                            System.out.println("生產者---------生產");
                            Thread.sleep(1000);
                            resource.setFlag(true);
                            resource.notify();
                        }catch (InterruptedException e) {
                            e.printStackTrace();
                        }

                }
            }

        }
    }


}