Java租车系统

package 项目3;
 
public abstract class MotoVehicle {
 
	
	private String numberPlate;//车牌号
	private String brand;//牌子
	private double dailyRent;//租金
	public String getVehicleId;
	public MotoVehicle() {
		super();
	}
	public MotoVehicle(String numberPlate, String brand, double dailyRent) {
		super();
		this.numberPlate = numberPlate;
		this.brand = brand;
		this.dailyRent = dailyRent;
	}
	public String getNumberPlate() {
		return numberPlate;
	}
	public void setNumberPlate(String numberPlate) {
		this.numberPlate = numberPlate;
	}
	public String getBrand() {
		return brand;
	}
	public void setBrand(String brand) {
		this.brand = brand;
	}
	public double getDailyRent() {
		return dailyRent;
	}
	public void setDailyRent(double dailyRent) {
		this.dailyRent = dailyRent;
	}
	  
	public abstract double calRent(int days);//计算租金
	  
}

package 项目3;
 
public class MotoOperation {
 
	  public MotoVehicle motos[] = new MotoVehicle[8];
	  
 
	    public void init() {
	        motos[0] = new Car("京NY28588", "宝马", 800, "X6");
	        motos[1] = new Car("京CNY3284", "宝马", 600, "550i");
	        motos[2] = new Car("京NT37465", "别克", 300, "林荫大道");
	        motos[3] = new Car("京NT96968", "别克", 600, "GL8");
	        motos[4] = new Bus("京6566754", "金杯", 800,16 );
	        motos[5] = new Bus("京8696997", "金龙", 800,16 );
	        motos[6] = new Bus("京9696996", "金杯", 1500,34 );
	        motos[7] = new Bus("京8696998", "金龙", 1500,34 );
	    }
	    public MotoVehicle motoLeaseOut(String brand, String model, int seats) {
	        MotoVehicle moto = null;
	        for (MotoVehicle mymoto : motos) {//增强for循环
	            if (mymoto instanceof Car) {//instanceof防止向下转型出问题	
	                Car car = (Car) mymoto;//向下转型，确保可以使用子类特有属性
	                if (car.getBrand().equals(brand) && car.getModel().equals(model)) {
	                    moto = car;
	                    break;
	                }
	            } else {
	                Bus bus = (Bus) mymoto;
	                if (bus.getBrand().equals(brand) && bus.getSeats() == seats) {
	                    moto = bus;
	                    break;
	                }
	            }
	        }
	        return moto;
	    }
}

package 项目3;
 
public class Bus extends MotoVehicle {
 
	private int seats;//座位
	
	 public Bus() {
		super();
	}
 
	public Bus(String numberPlate, String brand, double dailyRent, int seats) {
		super(numberPlate, brand, dailyRent);
		this.seats = seats;
	}
 
	public int getSeats() {
		return seats;
	}
 
	public void setSeats(int seats) {
		this.seats = seats;
	}
 
	public double calRent(int days){//计算租金
	        double price=this.getDailyRent()*days;//租金计算公式
	        if (days>0&&days<3){
          price*=1;
      } else if (days>=3&&days<7){
          price*=0.9;
      } else if (days>=7&&days<30) {
          price*=0.8;
      } else if (days>=30&&days<150) {
          price*=0.7;
      } else if (days>=150) {
          price*=0.6;
      }
	        return price;
	  
	 }
}

package 项目3;
 
public class Car extends MotoVehicle {
 
	private String model;
 
	public Car() {
		super();
	}
 
	public Car(String numberPlate, String brand, double dailyRent, String model) {
		super(numberPlate, brand, dailyRent);
		this.model = model;
	}
 
	public String getModel() {
		return model;
	}
 
	public void setModel(String model) {
		this.model = model;
	}
	
	 public double calRent(int days){//计算租金
	        double price=this.getDailyRent()*days;//租金计算公式
	        if(days>0&&days<=7){
          price*=1;
      }else if(days>7&&days<=30){
          price*=0.9;
      }else if(days>30&&days<=150){
          price*=0.8;
      } else if (days>150) {
          price*=0.7;
      }
			return price;
}
}

package 项目3;
 
import java.util.Scanner;
 
public class RentMgrSys {
 
			public static void main(String[] args) {
				        Scanner sc=new Scanner(System.in);
				        MotoOperation motoMgr=new MotoOperation();
				        motoMgr.init();//初始化
				        MotoVehicle moto=null;
				        System.out.println("*****欢迎光临租赁公司*****");
				        System.out.print("请选择你要租赁的汽车类型：");
				        int motoType=sc.nextInt();
				        String brand="";
				        String type="";
				        int seats=0;
				        if (motoType==1){
				            System.out.println("请选择你要租赁的汽车品牌：1、别克 2、宝马");
				            int choose2=sc.nextInt();
				            if(choose2==1){
				                brand="别克";
				                System.out.println("请选择你要租赁的汽车类型：1、林荫大道2、GL8");
				                type=(sc.nextInt()==1)?"林荫大道":"GL8";
				            }else if (choose2==2){
				                brand="宝马";
				                System.out.println("请选择你要租赁的汽车类型：1、X6 2、550i");
				                type=(sc.nextInt()==1)?"X6":"550i";
				            }
				        } else if (motoType==2) {
					//租车
				            type="";
				            System.out.println("请选择你要租赁的汽车品牌：1、金龙 2、金杯");
				            brand=(sc.nextInt()==1)?"金龙":"金杯";
				            System.out.println("请选择你要租赁的汽车座位数：1、16座2、34座");
				            seats=(sc.nextInt()==1)?16:34;
				        }
				        moto =motoMgr.motoLeaseOut(brand,type,seats);
				        System.out.println("请选择你要租赁的天数：");
				        int days=sc.nextInt();
				        double money=moto.calRent(days);//计算租金
				        System.out.println("租车成功，请拿车牌号去取车："+moto.getVehicleId);
				        System.out.println("需要支付："+money+"元");
				    }
}