Join线程插队

package com.Java;

//Join 线程插队 必须执行完再执行其他线程
public class TestJoin implements Runnable {
    @Override
    public void run() {
        for (int i = 0; i < 500; i++) {
            System.out.println("我是vip" + i);
        }
    }

    public static void main(String[] args) throws InterruptedException {
        TestJoin tj = new TestJoin();
        Thread thread = new Thread(tj);
        thread.start();
        for (int i = 0; i < 1000; i++) {
            if (i == 300) {
                thread.join();//插队 必须执行完
            }
            System.out.println("主线程" + i);
        }

    }
}