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() + "正在把數據'" + data1 +"'換出去");
                    Thread.sleep((long)(Math.random()*10000));
                    String data2 = (String)exchanger.exchange(data1);
                    System.out.println("線程" + Thread.currentThread().getName() + "換回的數據為'" + data2+"'");
                }catch(Exception e){
                    
                }
            } 
        });
        service.execute(new Runnable(){
            public void run() {
                try {             
                    String data1 = "李四";
                    System.out.println("線程" + Thread.currentThread().getName() + "正在把數據'" + data1 +"'換出去");
                    Thread.sleep((long)(Math.random()*10000));                
                    String data2 = (String)exchanger.exchange(data1);
                    System.out.println("線程" + Thread.currentThread().getName() + "換回的數據為'" + data2 + "'");
                }catch(Exception e){
                    
                }             
            } 
        });   
    }
}

線程pool-1-thread-1正在把數據'張三'換出去
線程pool-1-thread-2正在把數據'李四'換出去
線程pool-1-thread-1換回的數據為'李四'
線程pool-1-thread-2換回的數據為'張三'