标签:ring inter main class ice return imp 使用 ace
贷款购买房屋时,支付首付款是一种功能操作,定义在Payment接口中。住宅产权房屋类和商业产权房屋类均具有支付首付款的功能。依据以上内容,创建一个接口和两个类:
接口Payment
package com; public interface Payment { double downPay(double price,double area); }
Payment接口的非抽象使用类——Residence类(住宅产权房屋类)
package com; public class Residence { double downPay(double price,double area){ return price*area*0.2; } }
Payment接口的非抽象使用类——Commercial类(商业产权房屋类)
package com; public class Commercial { double downPay(double price,double area){ return price*area*0.45; } }
在主类Test中,创建住宅产权房屋对象,完成住宅产权房屋首付款的计算。再将定义商业产权房屋对象传递给Payment接口对象,之后利用接口回调完成商业产权房屋首付款的计算。输入测试数据,完成结果的输出。
package com; import java.util.Scanner; public class Test { /** * @param args */ public static void main(String[] args) { Residence residence=new Residence(); Commercial commercial =new Commercial(); Scanner reader =new Scanner(System.in); System.out.println("输入房屋每平米价格"); double price =reader.nextDouble(); System.out.println("输入房屋面积"); double area =reader.nextDouble(); System.out.println("住宅产权房屋的首付:"+residence.downPay(price, area)); System.out.println("商业产权房屋的首付:"+commercial.downPay(price, area)); } }
标签:ring inter main class ice return imp 使用 ace
原文地址:https://www.cnblogs.com/hzcxwz/p/11809016.html