用于实现两个人之间的数据交换，每个人在完成一定的事务后想与对方交换数据，第一个先拿出数据的人将一直等待第二个人拿着数据到来时，才能彼此交换数据。
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){
}
}
});
}
}
返回结果：
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'
更多java多线程编程之使用exchanger数据交换实例。