摘要: 作业1 1.业务接口 1 package lianxi4; 2 3 public interface Business { 4 double RATIO=0.022; 5 double TAX=0.03; 6 void buying (double price); 7 } 2.购房者类 1 pack 阅读全文
posted @ 2019-11-16 17:34 常恒*&& 阅读(125) 评论(0) 推荐(0) 编辑