消费者和生产者模式

class ProductFactory {
    //定义库存最大
    private int stock = 10;

    private LinkedList<String> products;

    public ProductFactory() {
        this.products = new LinkedList<>();
    }

    public synchronized void productsStock(String product) throws InterruptedException {

        while (stock == products.size()) {

            System.out.println("警告：线程(" + Thread.currentThread().getName() + ")准备生产产品，但产品池已满");

            wait();
        }
        try {
            Thread.sleep(1000);//根据需求为了便于观察结果，每消费一个产品，sleep 1000 ms
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        products.add(product);
        System.out.println("线程(" + Thread.currentThread().getName() + ")生产了一件产品，放在" + (Integer.valueOf(product)+1)+"商品位" + ";当前剩余商品" + products.size() + "个");
        notify();

    }

    /**
     * 消费方法
     */
    public synchronized void consumeStock() throws InterruptedException {
        while (products.size() == 0) {
            System.out.println("警告：线程(" + Thread.currentThread().getName() + ")准备消费产品，但当前没有产品");

            wait();
        }
        try {
            Thread.sleep(1000);//根据需求为了便于观察结果，每消费一个产品，sleep 1000 ms
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        String product = products.remove(0);
        System.out.println("线程(" + Thread.currentThread().getName() + ")消费了一件"+(Integer.valueOf(product)+1)+"号商品位商品"+ ";当前剩余商品" + products.size() + "个");
        notify();


    }


}

class Producer implements Runnable {

    private ProductFactory factory;

    public Producer(ProductFactory factory) {
        this.factory = factory;
    }


    @Override
    public void run() {
        int i=0;

        try {
            while (true) {
                factory.productsStock(String.valueOf(i));
                i++;
            }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }
}

class Consume implements Runnable {
    private ProductFactory factory;

    public Consume(ProductFactory factory) {
        this.factory = factory;
    }

    @Override
    public void run() {

        try {
            while (true) {
                factory.consumeStock();

            }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}


public class DemoProduct {


    public static void main(String[] args) {

        ProductFactory productFactory = new ProductFactory();

        new Thread(new Consume(productFactory),"1号消费者").start();
        new Thread(new Consume(productFactory),"2号消费者").start();
        new Thread(new Consume(productFactory),"3号消费者").start();
        new Thread(new Producer(productFactory),"1号生产者").start();
        new Thread(new Producer(productFactory),"2号生产者").start();

    }

}