Thread join

package thread;

class Mom extends Thread {
@Override
public void run() {
System.out.println(“做饭”);
Son s = new Son();
s.start();
try {
s.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

    System.out.println("饭做好了");
}

}

class Son extends Thread {
@Override
public void run() {
System.out.println(“打酱油”);
}
}

public class JoinThread {
public static void main(String[] args) {
Mom m=new Mom();
m.start();
}
}