java入门 -- join方法

/*

* join方法

* 作用：join方法的作用是加入其它线程，执行了join方法的线程会将当前CPU执行权让给加入的线程，直到加入线程执行完毕才会继续执行其它线程;

*/

class Mum extends Thread{

@Override

public void run() {

// TODO Auto-generated method stub

super.run();

System.out.println("妈妈开始做饭...");

System.out.println("妈妈开始炒菜");

System.out.println("妈妈发现没有了酱油..");

System.out.println("妈妈叫儿子去买酱油");

Son s = new Son();

s.start();

try {

s.join();

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

System.out.println("妈妈继续做饭");

System.out.println("饭做好了，大家一起吃饭");

}

}

class Son extends Thread{

@Override

public void run() {

// TODO Auto-generated method stub

super.run();

System.out.println("小明开始下楼");

System.out.println("小明朝着小卖部走去...");

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

System.out.println("小明开始打酱油");

System.out.println("小明往回走...");

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

System.out.println("小明将酱油交给了妈妈");

}

}

public class Demo11 {

public static void main(String[] args) {

// TODO Auto-generated method stub

Mum mum = new Mum();

mum.start();

}

}