java主线程控制子线程-尊龙游戏旗舰厅官网

1.[代码]countdownlatch控制主线程等子线程执行完--java多线程

package com.sihuatech.common;

import java.util.concurrent.countdownlatch;

/**

* 执行线程

*

* @author lei 2011-7-28

*/

class importthread extends thread {

private countdownlatch threadssignal;

public importthread(countdownlatch threadssignal) {

this.threadssignal = threadssignal;

}

@override

public void run() {

system.out.println(thread.currentthread().getname() "开始...");

// do somethings

threadssignal.countdown();// 线程结束时计数器减1

system.out.println(thread.currentthread().getname() "结束. 还有" threadssignal.getcount() " 个线程");

}

}

/**

* 测试方法

*

* @author lei 2011-7-28

*/

public class test {

public static void main(string[] args) {

int threadnum = 10;

countdownlatch threadsignal = new countdownlatch(threadnum);// 初始化countdown

for (int ii = 0; ii < threadnum; ii ) {// 开threadnum个线程

thread t = new importthread(threadsignal);

t.start();

}

try {

threadsignal.await();// 等待所有子线程执行完

} catch (interruptedexception e) {

e.printstacktrace();

}

system.out.println(thread.currentthread().getname() "结束.");

}

}

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