首页手记慕课作业：菜鸟代码还希望大牛指正不足之处

慕课作业：菜鸟代码还希望大牛指正不足之处

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Java

package com.java1996;
import java.util.InputMismatchException;
import java.util.Scanner;
/**

答答租车系统
@author HBX

*/
public class CarSystem {
public static void main(String[] args) {
beginning();
}

public static void beginning(){
Car c1=new Auto(1,"奥迪A4",500,4);
Car c2=new Auto(2,"马自达6",400,4);
Car c3=new Pcar(3,"皮卡雪6",450,4,2);
Car c4=new Auto(4,"金龙",800,20);
Car c5=new Truck(5,"松花江",400,4);
Car c6=new Truck(6,"依维柯",1000,20);
//存放车辆名字的数组
String[] carName={c1.getName(),c2.getName(),c3.getName(),c4.getName(),
c5.getName(),c6.getName()};

//空载客车辆数组
String[] auto=new String[6];
//空载货车辆数组
String[] truck=new String[6];
int sumCarrying=0; //载客总数
double sumCargoes=0;//载货总数
double sumPrice=0;//租车价格总和
int j=0;//用户选择汽车的序号
int input=0;//用户选择租车的车辆数
int days=0;//用户租车天数
Scanner sc=new Scanner(System.in);
while(true){
    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");
    sc=new Scanner(System.in);
    String str=sc.next();// 输入Int 会抛异常 为了方便输入字符串吧
    //判断用户输入的是否要租车
    if(str.equals("0")){
        System.out.println("呵呵");
        break;
    }else if(!str.equals("1")){
        System.out.println("别开玩笑了，请按提示输入");
        continue;
    }else{
        //开始
        System.out.println("您可租车的类型及价目表：");
        System.out.println("序号   汽车名称   租金         容量");
        System.out.println(c1.getCarNum()+".   "+c1.getName()+" "+c1.getPrice()+"元/天     载客"+c1.getCarrying()+"人");
        System.out.println(c2.getCarNum()+".  "+c2.getName()+" "+c2.getPrice()+"元/天     载客"+c2.getCarrying()+"人");
        System.out.println(c3.getCarNum()+".  "+c3.getName()+" "+c3.getPrice()+"元/天     载客"+c3.getCarrying()+"人 载货"+c3.getCargoes()+"吨");
        System.out.println(c4.getCarNum()+".  "+c4.getName()+"     "+c4.getPrice()+"元/天       载客"+c4.getCarrying()+"人");
        System.out.println(c5.getCarNum()+".  "+c5.getName()+" "+c5.getPrice()+"元/天       载货"+c5.getCargoes()+"吨");
        System.out.println(c6.getCarNum()+".  "+c6.getName()+" "+c6.getPrice()+"元/天     载货"+c6.getCargoes()+"吨");
        System.out.println("请输入您要租汽车的数量：");
        while(true){
            try{
                input=sc.nextInt();
                break;
            }catch(InputMismatchException i){
                System.out.println("别开玩笑了，请输入数字");
                sc.next();
            }
        }
        for(int i=0;i<input;i++){
            System.out.println("请输入第"+(i+1)+"辆车的序号：");
            while(true){
                try{
                    j=sc.nextInt();
                    break;//循环输入直到用户输入对为止
                }catch(InputMismatchException e){
                    System.out.println("别开玩笑了，请输入数字");
                    sc.next();//此方法可以返回键盘输入的下一个
                    }
            }

            switch(j){
            case 1:
                auto[j-1]=carName[j-1];//把存放车辆名字的数组对应下标赋给载客车数组
                sumCarrying+=c1.getCarrying();//选一次1车就加一次
                sumPrice+=c1.getPrice();//同理价格也加一次
                break;
            case 2:
                auto[j-1]=carName[j-1];
                sumCarrying+=c2.getCarrying();
                sumPrice+=c2.getPrice();
                break;
            case 3:
                auto[j-1]=carName[j-1];
                truck[j-1]=carName[j-1];
                sumCarrying+=c3.getCarrying();
                sumCargoes+=c3.getCargoes();
                sumPrice+=c3.getPrice();
                break;
            case 4:
                auto[j-1]=carName[j-1];
                sumCarrying+=c4.getCarrying();
                sumPrice+=c4.getPrice();
                break;
            case 5:
                truck[j-1]=carName[j-1];
                sumCargoes+=c5.getCargoes();
                sumPrice+=c5.getPrice();
                break;
            case 6:
                truck[j-1]=carName[j-1];
                sumCargoes+=c6.getCargoes();
                sumPrice+=c6.getPrice();
                break;
            default:
                System.out.println("输入错误，没有这辆车！请重新输入");
                i--;
            }

        }

        System.out.println("请输入租车天数：");
        while(true) {
            try{
                days=sc.nextInt();
                break;
            }catch(InputMismatchException e){
                System.out.println("别开玩笑了，请输入数字");
                sc.next();
            }
        }
        sumPrice=sumPrice*days;
        System.out.println("您的账单：");
        System.out.println("***可载人的车有：");
        for(int i=0;i<auto.length;i++){
            if(auto[i]==null){
                continue;
            }
            System.out.print(auto[i]+" ");
        }
        System.out.print("共载人："+sumCarrying+"人\n");
        System.out.println("***可载货的车有：");
        for(int i=0;i<truck.length;i++){
            //判断数组内为空的值不输出
            if(truck[i]==null){
                continue;
            }
            System.out.print(truck[i]+" ");
        }
        System.out.print("共载货："+sumCargoes+"吨\n");
        System.out.println("***租车总价格："+sumPrice+"元");

        System.out.println("本次服务结束，请到前台办理手续，谢谢！");
        sc.close();
        break;
    }

}

}

}
/**

@author HBX
所有车的父类
/
class Car{

private String name;//车的名字
private int carNum;//汽车编号
private int price;//车的价格
private int carrying;//载货量
private int cargoes;//载客量

// public Car(int carNum,String name,int price,int carrying,int cargoes){
// this.name=name;
// this.price=price;
// this.carNum=carNum;
// this.carrying=carrying;
// this.cargoes=cargoes;
// }
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getCarNum() {
return carNum;
}
public void setCarNum(int carNum) {
this.carNum = carNum;
}
public int getPrice() {
return price;
}
public void setPrice(int price) {
this.price = price;
}
public int getCarrying() {
return carrying;
}
public void setCarrying(int carrying) {
this.carrying = carrying;
}
public int getCargoes() {
return cargoes;
}
public void setCargoes(int cargoes) {
this.cargoes = cargoes;
}

}

class Auto extends Car{

public Auto(int carNum, String name, int price,int carrying) {
    super.setName(name);
    super.setCarNum(carNum);
    super.setPrice(price);
    super.setCarrying(carrying);
    //super(carNum, name, price);

}

}

class Truck extends Car{

public Truck(int carNum, String name, int price,int cargoes) {
    super.setName(name);
    super.setCarNum(carNum);
    super.setPrice(price);
    super.setCargoes(cargoes);
    //super(carNum, name, price);
}

}

class Pcar extends Car{

public Pcar(int carNum, String name, int price,int carrying,int cargoes) {
    super.setName(name);
    super.setCarNum(carNum);
    super.setPrice(price);
    super.setCarrying(carrying);
    super.setCargoes(cargoes);

}

}

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