java自学 day4

租车系统

测试类

import java.util.Scanner;

public class Init {
        static int allrennum=0;
        static int allhuonum=0;
        static int allprice=0;
    
    public static void main(String[] args) {
        System.out.println("欢迎使用答答租车系统：");
        System.out.println("您是否要租车：1是 0否");
        Scanner in=new Scanner(System.in);
        int check=in.nextInt();
        if(check==1){
        ren ren=new ren();
        wu wu=new wu();
        quan qu=new quan();
        ren.print(1,"奥迪A4",500,4);
        ren.print(2,"马自达6",400,4);
        qu.print(3,"皮卡雪6",450,4,2);
        ren.print(4,"金龙  ",800,20);
        wu.print(5, "松花江 ", 400, 4);
        wu.print(6, "依维柯", 1000, 20);
        System.out.println("请输入您要租的汽车的数量：");
        Scanner input=new Scanner(System.in);
        int nums=input.nextInt();
        for(int i=1;i<=nums;i++){
            System.out.println("请输入第"+i+"辆车的序号");
            int xuhao=in.nextInt();
            switch(xuhao){
            case 1:
                ren.fuzhi("奥迪A4",500,4);
                break;
            case 2:
                ren.fuzhi("马自达6",400,4);
                break;
            case 3:
                qu.fuzhi("皮卡雪6",450,4,2);
                break;
            case 4:
                ren.fuzhi("金龙  ",800,20);
                break;
            case 5:
                wu.fuzhi( "松花江 ", 400, 4);
                break;
            case 6:
                wu.fuzhi( "依维柯", 1000, 20);
                break;
            }
        }
        System.out.println("请输入天数：");
        Scanner input2=new Scanner(System.in);
        int day=input.nextInt();
        System.out.println("共可载人："+allrennum+"人");
        System.out.println("共可载货："+allhuonum+"吨");
        System.out.println("总金额为："+day*allprice+"元");
        }
        else{
            System.out.println("离开");
        
        }
        }
    }
    

抽象类Car

public abstract class Car {
    int num;
    String name;
    int price;
    
    

}

子类ren  (只能载人)

public class ren extends Car {
    int rennum;
    
    public void print(int num,String name,int price,int rennum) {
        System.out.println(num+" "+name+" "+price+"元/天  "+"载人："+rennum+"人");
    }
    public void fuzhi(String name,int price,int rennum) {
        
        Init.allprice+=price;
        Init.allrennum+=rennum;
        
    }

    
}

子类wu  (只能载货)

public class wu extends Car {
    int huonum;
    public void print(int num,String name,int price,int huonum) {
        System.out.println(num+" "+name+" "+price+"元/天  "+"载货："+huonum+"吨");
    }
    public void fuzhi(String name,int price,int huonum) {
        
        Init.allprice+=price;
        Init.allhuonum+=huonum;
    }
}

子类quan (都能载)

public class quan extends Car {
     int huonum;
     int rennum;

    public void print(int num,String name,int price,int rennum,int huonum) {
        System.out.println(num+" "+name+" "+price+"元/天  "+"载货："+rennum+"人"+huonum+"吨");
    }
    public void fuzhi(String name,int price,int rennum,int huonum){
        
        Init.allprice+=price;
        Init.allhuonum+=huonum;
        Init.allrennum+=rennum;
    }
}

运行截图