第十次作业

package Test;

import java.util.Scanner;

public class test13 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Buyer buyer = new Buyer();
        buyer.name = "Lisa";
        Intermediary inter = new Intermediary(buyer);
        double price = 0.0;
        Scanner reader = new Scanner(System.in);
        System.out.println("请输入房屋的总价格：");
        price = reader.nextDouble();
        inter.charing(price);
    }
}
interface Business{
    //房屋中介费 0.022
    double RATIO = 0.0;
    //代表购房税费
    double TAX = 0.0;
    //price表示房屋总价
    default void Buying(double price) {}
}
class Buyer implements Business{
    String name ;
    @Override
    public void Buying(double price) {
        // TODO Auto-generated method stub
        System.out.println(name +"购买一套住宅的价格是："+price);
    }
}
class Intermediary implements Business{
    //购房对象
    Buyer buyer ;
    public Intermediary(Buyer buyer) {
        this.buyer = buyer;
    }

    @Override
    public void Buying(double price) {
        // TODO Auto-generated method stub
    }
    public void charing(double price) {
        System.out.println(buyer.name+"购买一套"+price+"的住宅需要花费"+price*0.022+"的房屋中介费和"+price*0.03+"的契税费");
    }
}

package Test;

import java.util.Scanner;

public class test12 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        double total = 0.0;
        Scanner scanner = new Scanner(System.in);
        for(int i = 0;i < 5;i++) {
            double score = scanner.nextDouble();
            if(score>100||score<0) {
                throw new myException1234("分数不能大于100或者小于0");
            }
            total += score;
        }
        System.out.println("分数的平均值是："+total/5);
    }
}
class myException1234 extends RuntimeException{
    
    myException1234(String msg){
        super(msg);
    }
}