Java实现简易的答答租车系统（面向对象综合练习）

逃离我推掉我的手 2022-02-20 19:37 252阅读 0赞

学习了面向对象的核心概念——类的封装、继承、多态之后，答答租车系统开始营运了。请你充分利用面向对象思想，为公司解决智能租车问题，根据客户选定的车型和租车天数，来计算租车费用，最大载客人数，最大载载重量。公司现有三种车型（客车、皮卡车、货车），每种车都有名称和租金的属性；其中：客车只能载人，货车只能载货，皮卡车是客货两用车，即可以载人，也可以载货。

*  功能：
 *  1.展示所有可租车辆
 *  2.选择车型。租车辆
 *  3.展示租车清单。包含：总金额。总载货量及其车型。总载人量及其车型

*  代码实现过程如下：

**父类Car**

public class Car {
    	protected int num;
    	protected String carName;
    	protected int carMoney;
    	protected int peopleNumbers;
    	protected int weight;
    	
    	public int getNum() {
    		return num;
    	}
    	public void setNum(int num) {
    		this.num = num;
    	}
    	public String getCarName() {
    		return carName;
    	}
    	public void setCarName(String carName) {
    		this.carName = carName;
    	}
    	public int getCarMoney() {
    		return carMoney;
    	}
    	public void setCarMoney(int carMoney) {
    		this.carMoney = carMoney;
    	}
    	public int getPeopleNumbers() {
    		return peopleNumbers;
    	}
    	public void setPeopleNumbers(int peopleNumbers) {
    		this.peopleNumbers = peopleNumbers;
    	}
    	public int getWeight() {
    		return weight;
    	}
    	public void setWeight(int weight) {
    		this.weight = weight;
    	}
    }

**客车类**

//客车
    public class MannedVehicle extends Car {
    	public MannedVehicle(int num,String carName,int carMoney,int peopleNumbers){
    		this.num = num;
    		this.carName = carName;
    		this.carMoney = carMoney;
    		this.peopleNumbers = peopleNumbers;	
    	}
    }

**皮卡车类**

//皮卡车
    public class DualPurposeVehicle extends Car {
    
    	public DualPurposeVehicle(int num,String carName,int carMoney,int peopleNumbers,int weight){
    		this.num = num;
    		this.carName = carName;
    		this.carMoney = carMoney;
    		this.peopleNumbers = peopleNumbers;
    		this.weight = weight;
    		
    	}
    }

**货车类**

//创建一个货车类，继承car类
    public class Truck extends Car {
    	//货车名字，货车租借价格，货车载重
    	public Truck(int num,String carName,int carMoney,int weight){
    		this.num = num;
    		this.carName = carName;
    		this.carMoney = carMoney;
    		this.weight = weight;
    	}
    }

**主函数**

package com.ldu.day0413;
    //答答租车系统相关数据变量如下
    /*
     * MannedVehicle		客车
     * DualPurposeVehicle	皮卡车
     * Truck				货车
     * input				Scanner定义的输入
     * num    				是否租车，1或者0
     * rentCar 				数组来存储车辆信息
     * rentNum				需要租借的车的数量
     * numbers[]			存储需要租借的汽车的序号
     * count = 0;			可载人,计算人数
     * count1 = 0;			计算可载重吨数
     * sum					计算单天的总费用
     * allSum				计算总的费用
     * 
     */
    import java.util.Scanner;
    
    public class AnswerCarRentalSystem {
    
    
    	public static void main(String[] args) {
    		
    		//定义一个数组，来存储可租车的类型
    		Car [] rentCar = {new MannedVehicle(1,"奥迪A4",500,4),
    						  new MannedVehicle(2,"马自达6",400,4),
    						  new DualPurposeVehicle(3,"皮卡雪",450,4,2),
    						  new Truck(4,"松花江",400,4),
    						  new Truck(5,"铁龙",1000,20),
    				
    		};
    		
    		
    		System.out.println("欢迎使用答答租车系统");
    		System.out.println("您是否需要租车：1是，0否");
    		Scanner input = new Scanner(System.in);
    		int num = input.nextInt();
    		if(num == 1){
    			
    			//通过for循环来实现车辆的输出
    			System.out.println("您可租车的类型及其价目表：");
    			System.out.println("序号\t" + "汽车名称\t\t" + "租金\t\t" + "所载人数\t\t" + "所载重量");
    			for(int i = 0;i < rentCar.length;i++){
    				System.out.print(rentCar[i].num + "\t" + rentCar[i].carName + "\t\t"
    					+ rentCar[i].carMoney + "元/天\t\t" + rentCar[i].peopleNumbers + "人\t\t"
    					+ rentCar[i].weight + "吨"
    					);
    				System.out.println();
    			}
    			
    			
    			//实现想要租借的车辆的数量，以及想要租借的车辆序号
    			System.out.println("请输入您要租汽车的数量：");
    			int rentNum = input.nextInt();
    			
    			//定义一个数组，来存储想要租借的汽车的序号
    			int [] numbers = new int [6];
    			if(rentNum < 0){
    				System.out.println("输入的数量不符合，请重新输入");
    				rentNum = input.nextInt();
    			}else{
    				for(int j = 0;j < rentNum;j++){
    					System.out.println("请输入第" + (j + 1) + "辆车的序号");
    					numbers[j] =input.nextInt();
    				}
    			}
    			
    			//输入想要租借车辆的天数，通过下面来实现
    			System.out.println("请输入租车天数");
    			int rentNumCar = input.nextInt();
    			
    			//定义三个计数器，分别计算三种类型车辆的数量
    			int count = 0;			//可载人,计算人数
    			int count1 = 0;			//计算可载重吨数
    		
    			//计算总钱数500 400 450 400 1000
    			int sum = 0;
    			//分类输出，车辆类型，然后计算车辆所总共载人数。
    			for(int i = 0;i < numbers.length;i++){
    				int temp = numbers[i];
    				switch(temp){
    					case 1:
    						sum += 500;
    						count += 4;
    						continue;
    					case 2:
    						sum += 400;
    						count += 4;
    						continue;
    					case 3:
    						sum += 450;
    						count += 4;
    						continue;
    					case 4:
    						sum += 400;
    						count1 += 2;
    						continue;
    					case 5:
    						sum += 1000;
    						count1 += 20;
    						continue;
    				}
    			}
    			
    			//下面实现租借车辆所需要花的钱,sum和是租借一天的钱，总钱数需要*租借天数
    			int allSum = sum * rentNumCar;
    			
    			//最后输出总账单
    			System.out.println("您的账单是：");
    			
    			System.out.println("****可载人的车有：");
    			for(int j = 0;j < rentNum;j++){
    				System.out.print(rentCar[j].carName + "\t");
    			}
    			System.out.println("共载人：" + count + "人");
    			
    			System.out.println("***载货的车有：");
    			for(int j = 0;j < rentNum;j++){
    				if(numbers[j] == 3 || numbers[j] == 4 || numbers[j] == 5)
    				System.out.print(rentCar[j].carName + "\t");
    			}
    			System.out.println("共载货：" + count1 + "吨");
    			System.out.println("***租车总价格：" + allSum + "元");
    			
    			
    		}else{
    			System.out.println("感谢使用再见！");
    			return ;
    		}
    	}
    
    }

最终的实现结果截图如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FzMTc4MDkyNTk3MTU_size_16_color_FFFFFF_t_70]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FzMTc4MDkyNTk3MTU_size_16_color_FFFFFF_t_70]: /images/20220220/32daab32f9a24a11a30073143a9c2540.png