用于實(shí)現(xiàn)兩個(gè)人之間的數(shù)據(jù)交換，每個(gè)人在完成一定的事務(wù)后想與對(duì)方交換數(shù)據(jù)，第一個(gè)先拿出數(shù)據(jù)的人將一直等待第二個(gè)人拿著數(shù)據(jù)到來(lái)時(shí)，才能彼此交換數(shù)據(jù)。

復(fù)制代碼代碼如下:

package com.ljq.test.thread;

import java.util.concurrent.Exchanger;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

public class ExchangerTest {

    public static void main(String[] args) {

        ExecutorService service = Executors.newCachedThreadPool();

        final Exchanger exchanger = new Exchanger();

        service.execute(new Runnable(){

            public void run() {

                try {              

                    String data1 = "張三";

                    System.out.println("線程" + Thread.currentThread().getName() + "正在把數(shù)據(jù)'" + data1 +"'換出去");

                    Thread.sleep((long)(Math.random()*10000));

                    String data2 = (String)exchanger.exchange(data1);

                    System.out.println("線程" + Thread.currentThread().getName() + "換回的數(shù)據(jù)為'" + data2+"'");

                }catch(Exception e){

                }

            }  

        });

        service.execute(new Runnable(){

            public void run() {

                try {              

                    String data1 = "李四";

                    System.out.println("線程" + Thread.currentThread().getName() + "正在把數(shù)據(jù)'" + data1 +"'換出去");

                    Thread.sleep((long)(Math.random()*10000));                 

                    String data2 = (String)exchanger.exchange(data1);

                    System.out.println("線程" + Thread.currentThread().getName() + "換回的數(shù)據(jù)為'" + data2 + "'");

                }catch(Exception e){

                }              

            }  

        });    

    }

}

返回結(jié)果：

復(fù)制代碼代碼如下:

線程pool-1-thread-1正在把數(shù)據(jù)'張三'換出去

線程pool-1-thread-2正在把數(shù)據(jù)'李四'換出去

線程pool-1-thread-1換回的數(shù)據(jù)為'李四'

線程pool-1-thread-2換回的數(shù)據(jù)為'張三'

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