//模拟vip学员的线程

class VIPStudent implements Runnable {

@Override

public void run() {

for(int i=0;i<10;i++){

System.out.println(i+":vip学员在练车。。。");

//模拟练车时间

try {

Thread.sleep(3000);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

}

//模拟普通学员的线程

class NormalStudent implements Runnable {

private Thread vip ;//RUnnable ->Thread

public NormalStudent(){}

public NormalStudent(Thread vip){

this.vip = vip ;

}

@Override

public void run() {

for(int i=0;i<20;i++){

//判断是否是 最后一个普通学员

if(i==19){

//让给vip先执行 （在实现时：需要用 Join（）强制让vip插队，保证概率问题）

try {

vip.join();

} catch (InterruptedException e) {

e.printStackTrace();

}

}

System.out.println(i+"普通学员在练车。。。");

//模拟练车时间

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

}

public class ThreadDemo04{

public static void main(String[] args) {

Thread vip = new Thread(new VIPStudent());//装饰模式

vip.setPriority(Thread.MAX_PRIORITY);//10

Thread normal = new Thread( new NormalStudent(vip ));

normal.setPriority(Thread.NORM_PRIORITY);//5

vip.start();

normal.start();

}

}