多线程实现看病Test2

package com.doctor;
/**
 * 测试类
 * @author jjit
 *
 */
public class SeeDoctor implements Runnable{

    @Override
    public void run() {
        for(int i = 0;i<50;i++) {
            System.out.println("特需号"+(i+1)+"正在看病！");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
    
}

package com.doctor;
/**
 * 看病
 * @author jjit
 *
 */
public class Main {
    public static void main(String[] args) {
        SeeDoctor sd = new SeeDoctor();
        Thread tr = new Thread(sd);
        //tr线程的优先级比Thread的优先级大
        tr.setPriority(Thread.MAX_PRIORITY);
        tr.start();
        for(int i = 0;i<20;i++) {
            try {
                Thread.sleep(500);
                System.out.println("普通号"+(i+1)+"正在看病！");
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            if(i == 8) {
                try {
                    tr.join();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

输出：