Java实现答答租车系统

2019-11-26 09:18:21

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本文实例为大家分享了Java实现答答租车系统的具体代码，供大家参考，具体内容如下

项目需求：

基本界面需求：

and:

最后是把账单打印出来：

个人代码实现

基本思路：考虑到车辆之间的共性，设置一个父类Car, 子类MannedCar(载人), Truck(载货)，BothCary(既载人又载货)，三者继承父类Car的price, name属性, getName()方法, 同时重写getPersonNum, getGoodsNum方法。

Car.java:

package Car;public abstract class Car {  protected int price;  protected String name;  protected int getPrice() {    return price;  }  protected String getName() {    return name;  }  public int getPersonNum() {    // TODO Auto-generated method stub    return 0;  }  public int getGoodsNum() {    // TODO Auto-generated method stub    return 0;  }}

MannedCar.java:

package Car;public class MannedCar extends Car {  private int personNum;  public MannedCar() {    this.personNum = 0;    this.price = 0;    this.name = "";  }  public MannedCar(int personNum, int price, String name) {    this.personNum = personNum;    this.price = price;    this.name = name;  }  @Override  public int getPersonNum() {    return personNum;  }}

Truck.java:

package Car;public class Truck extends Car{  private int goodsNum;  public Truck() {    this.price = 0;    this.goodsNum = 0;    this.name = "";  }  public Truck(int price, int goodsNum, String name) {    this.price = price;    this.goodsNum = goodsNum;    this.name = name;  }  @Override  public int getGoodsNum() {    return goodsNum;  }}

BothCarry.java:

package Car;public class BothCarry extends Car {  private int personNum;  private int goodsNum;  public BothCarry() {    this.personNum = 0;    this.goodsNum = 0;    this.name = "";    this.price = 0;  }  public BothCarry(int price, int personNum,       int goodsNum, String name) {    this.personNum = personNum;    this.goodsNum = goodsNum;    this.price = price;    this.name = name;  }  public int getPersonNum() {    return personNum;  }  public int getGoodsNum() {    return goodsNum;  }}

系统：

CarSystem.java:

package Car;import java.util.Scanner;import java.util.ArrayList;public class CarSystem {  private static String goodByeInfo = "欢迎再次使用本系统，再见！";   private static int dayBorrow;  public static void beginSystem() {    CarSystem.SystemWelcome();    Scanner scanner = new Scanner(System.in);    String userCommand = scanner.next();    switch(userCommand){    case "1":      CarSystem.getUserInput();      break;    case "0":      System.out.println(goodByeInfo);      break;    default:      System.out.println("输入错误..End running..");      System.exit(0);      break;    }  }  public static void SystemWelcome() {    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");  }  public static void getUserInput() {    int numCarBorrow = 0;    ArrayList<Car> carList = new ArrayList<Car>(6);    carList.add(new MannedCar(4,500,"奥迪A4"));    carList.add(new MannedCar(4,400,"马自达6"));    carList.add(new BothCarry(450,4,2,"皮卡雪6"));    carList.add(new MannedCar(20,800,"金龙"));    carList.add(new Truck(400,4,"松花江"));    carList.add(new Truck(1000,20,"依维河"));    System.out.println("请输入您要租汽车的数量:");    Scanner sr = new Scanner(System.in);    numCarBorrow = sr.nextInt();    int[] carNumList = new int[numCarBorrow];    for(int i=0;i<numCarBorrow;i++) {      System.out.println("请输入第" + (i+1) + "辆车的序号:");      if (sr.hasNext()) {        carNumList[i] = sr.nextInt();      }    }    System.out.println("请输入租车天数:");    if (sr.hasNext()) {      dayBorrow = sr.nextInt();    }    sr.close();    StringBuilder manned = new StringBuilder();    int numOfManned = 0;    StringBuilder goods = new StringBuilder();    int numOfGoods = 0;    int totalCost = 0;    for(int i = 0;i < carNumList.length;i++) {      if(carNumList[i]>0 && carNumList[i] < 3 || carNumList[i]==4) {        manned.append("  ");        manned.append(carList.get(carNumList[i]-1).getName());        numOfManned += carList.get(carNumList[i]-1).getPersonNum();      }      else if(carNumList[i]==3) {        manned.append("  ");        manned.append(carList.get(carNumList[i]-1).getName());        goods.append("  ");        goods.append(carList.get(carNumList[i]-1).getName());        numOfManned += carList.get(carNumList[i]-1).getPersonNum();        numOfGoods += carList.get(carNumList[i]-1).getGoodsNum();      }      else {        goods.append("  ");        goods.append(carList.get(carNumList[i]-1).getName());        numOfGoods += carList.get(carNumList[i]-1).getGoodsNum();      }      totalCost += carList.get(carNumList[i]-1).getPrice();    }    //Output    System.out.println("您的账单:/n***可载人的车有:");    System.out.println(manned + "  共载人: " + numOfManned);     System.out.println("***载货的车有:/n" + goods + "  共载货 : " + numOfGoods + "吨");    System.out.println("***租车总价格: " + totalCost * dayBorrow + "元");  }}

主程序:

package Car;public class CarSystemTest {  public static void main(String[] args) {    // TODO Auto-generated method stub    CarSystem.beginSystem();  }}

运行结果：