Java multi-threaded programming using Exchanger data exchange examples

Used to realize data exchange between two people. Each person wants to exchange data with the other party after completing a certain transaction. The first person to take out the data will wait for the second person to arrive with the data. exchange data with each other.

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 = "张三";
                    System.out.println("线程" + Thread.currentThread().getName() + "正在把数据'" + data1 +"'换出去");
                    Thread.sleep((long)(Math.random()*10000));
                    String data2 = (String)exchanger.exchange(data1);
                    System.out.println("线程" + Thread.currentThread().getName() + "换回的数据为'" + data2+"'");
                }catch(Exception e){
                     
                }
            }  
        });
        service.execute(new Runnable(){
            public void run() {
                try {              
                    String data1 = "李四";
                    System.out.println("线程" + Thread.currentThread().getName() + "正在把数据'" + data1 +"'换出去");
                    Thread.sleep((long)(Math.random()*10000));                 
                    String data2 = (String)exchanger.exchange(data1);
                    System.out.println("线程" + Thread.currentThread().getName() + "换回的数据为'" + data2 + "'");
                }catch(Exception e){
                     
                }              
            }  
        });    
    }
}

Return result:

线程pool-1-thread-1正在把数据'张三'换出去
线程pool-1-thread-2正在把数据'李四'换出去
线程pool-1-thread-1换回的数据为'李四'
线程pool-1-thread-2换回的数据为'张三'

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