join就是合并线程一起顺序执行，，，如何调度的话就看cpu了
package com.bjsxt.thread.status;
/**
* join:合并线程
* @author Administrator
*
*/
public class JoinDemo01 extends Thread {
/**
* @param args
* @throws InterruptedException
*/
public static void main(String[] args) throws InterruptedException {
JoinDemo01 demo = new JoinDemo01();
Thread t = new Thread(demo); //新生
t.start();//就绪
//cpu调度 运行
for(int i=0;i<1000;i++){
if(50==i){
t.join(); //main阻塞...
}
System.out.println("main...."+i);
}
}
@Override
public void run() {
for(int i=0;i<1000;i++){
System.out.println("join...."+i);
}
}
}
实例instance 倒计时（十秒）：