抖音爆火的随机点名Java实现原理，没有连接数据库

抖音爆火的随机点名Java实现原理，没有连接数据库

import java.util.Random;
public class Array{
    public static void main(String[] args){
        //定义一个数据组来存取数据
        String[] names={"杨颖","杨幂","赵丽颖","迪丽热巴","唐嫣","唐艺昕","容祖儿","宋祖儿","蓝盈盈","蔡卓妍","林志玲","孙怡","宋佳","宋茜","马苏","蒋欣","古力娜扎","欧阳娜娜","贾玲","李小璐","江一燕","包文婧","邓家佳","娄艺潇","昆凌","马思纯","周冬雨","何穗","李亚男","李沁","应采儿","张天爱","贺敬轩","谢娜","萧亚轩"};
        //自动生成随机数
        Random ra=new Random();
        //声明一个变量来接收随机数，随机数不能超过数组的长度
        int b=ra.nextInt(names.length);
        //打印输出下标是随机数的内容
        System.out.println(names[b]);
    }
}