java的Exchanger 两个线程可以交换对象Demo

Java Exchanger 示例

最新推荐文章于 2023-05-07 22:24:10 发布

qnzhangqing

最新推荐文章于 2023-05-07 22:24:10 发布

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本文链接：https://blog.youkuaiyun.com/qnzhangqing/article/details/77866030

本文介绍了一个使用Java并发库中Exchanger类的示例程序。通过两个线程交换数据，演示了Exchanger的基本用法。

import java.util.concurrent.Exchanger;

public class ExchangerDemo {
	public static void main(String[] args) {
		Exchanger exchanger = new Exchanger(); 
		 
		ExchangerRunnable exchangerRunnable1 = new ExchangerRunnable(exchanger, "A"); 
		 
		ExchangerRunnable exchangerRunnable2 = new ExchangerRunnable(exchanger, "B"); 
		 
		new Thread(exchangerRunnable1).start(); 
		new Thread(exchangerRunnable2).start(); 
	}
}

import java.util.concurrent.Exchanger;

public class ExchangerRunnable implements Runnable {

	Exchanger exchanger = null;
	Object object = null;

	public ExchangerRunnable(Exchanger exchanger, Object object) {
		this.exchanger = exchanger;
		this.object = object;
	}

	public void run() {
		try {
			Object previous = this.object;

			this.object = this.exchanger.exchange(this.object);
			System.out.println(Thread.currentThread().getName() + " exchanged " + previous + " for " + this.object);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}
}