摘要: package Oop;public class Learn01S06 { public static void main(String[] args) { //实际的对象是确定的,引用类型不确定 //new Student06(); //new Person05(); Student06 s1 = 阅读全文
posted @ 2021-12-21 23:02 随顾 阅读(39) 评论(0) 推荐(0)