java生产者消费者的实现

最新推荐文章于 2025-03-26 00:15:00 发布

原创最新推荐文章于 2025-03-26 00:15:00 发布 · 532 阅读

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#java 多线程

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本文介绍了一个典型的生产者消费者模式实现案例，通过Java代码展示了如何利用多线程技术实现资源的生产和消费过程。该模式使用了同步方法来确保线程间的正确交互，并通过等待-通知机制协调生产者和消费者的活动。

public class Producer implements Runnable{
	private String name;
	private Food food;
	
	Producer() {
		
	}
	Producer(String name, Food food) {
		this();
		this.name = name;
		this.food =food;
	}
	
	public String getName() {
		return this.name;
	}
	public int getFood() {
		return food.getNum();
	}
	
	public void product () {
		while (true) {
			
			System.out.println(this.getName()+"生产了食物,剩余"+food.produce()+"个");
			try {
				Thread.sleep(5000);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
	
	@Override
	public void run() {
		// TODO Auto-generated method stub
		this.product();
	}

}

class Food {
	private static int num =0;

	Food (int num){
		Food.num = num;
	}
	public int getNum() {
		return Food.num;
	}
	
	public  synchronized int produce (){
		Food.num++;

			notify();

		return num;
	}
	
	public  synchronized void consume () {
		if (num>0) {
			Food.num--;

		}
		else {
			System.out.println("食物没有了，等待生产");
			try {
				wait();
				Food.num--;
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}

		}

	}
}

Customer.java

public class Customer implements Runnable{
	private String name;
	private Food food;
	Customer(){
		
	}
	Customer(String name,Food food) {
		this();
		this.name = name;
		this.food = food;
	}
	
	public String getName() {
		return this.name;
	}
	public int getFood() {
		return food.getNum();
	}
	
	public void custom () {
		while (true) {
				food.consume();
				System.out.println(this.getName()+"消费了食物,剩余"+food.getNum()+"个");
				
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
	
	@Override
	public void run() {
		// TODO Auto-generated method stub
		this.custom();
	}
	
}

Test.java

public class Test {
	public static void main (String[] args) {
		Food food = new Food(5);
		Producer pro = new Producer("pro1",food);
		Customer cus = new Customer("cus1",food);
		Thread t1 = new Thread(pro);
		Thread t2 = new Thread(cus);
		t1.start();
		t2.start();
	}
}