摘要: 1.做一个图书类Book id,name,price ,get,set访问器,构造方法2个,1个无参,1个有参 package homework; public class Book { private String id; private String name; private double p 阅读全文
posted @ 2022-04-30 22:44 潘雨 阅读(9) 评论(0) 推荐(0) 编辑