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Car.java 所有汽車的父類

package com.imooc;

public class Car {
	protected String name;
	protected double rent;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public double getRent() {
		return rent;
	}
	public void setRent(double rent) {
		this.rent = rent;
	}
	
}

passengerCar.java 客車

package com.imooc;

public class passengerCar extends Car {
	private double peopleCapacity;
	public passengerCar(String name,double rent,double peoplecapacity){
		this.name=name;
		this.rent=rent;
		this.peopleCapacity=peoplecapacity;
	}
	public double getPeopleCapacity() {
		return peopleCapacity;
	}

	public void setPeopleCapacity(double peopleCapacity) {
		this.peopleCapacity = peopleCapacity;
	}
	
}

PickUp.java 皮卡

package com.imooc;

public class PickUp extends Car {
	private double cargoCapacity;
	private double peopleCapacity;
	public PickUp(String name,double rent,double cargoCapacity,double peopleCapacity){
		this.name=name;
		this.rent=rent;
		this.cargoCapacity=cargoCapacity;
		this.peopleCapacity=peopleCapacity;
	}
	public double getCargoCapacity() {
		return cargoCapacity;
	}
	public void setCargoCapacity(double cargoCapacity) {
		this.cargoCapacity = cargoCapacity;
	}
	public double getPeopleCapacity() {
		return peopleCapacity;
	}
	public void setPeopleCapacity(double peopleCapacity) {
		this.peopleCapacity = peopleCapacity;
	}
	
}

Trunk.java 貨車

package com.imooc;

public class Trunk extends Car {
	private double cargoCapacity;
	public Trunk(String name,double rent,double cargoCapacity){
		this.name=name;
		this.rent=rent;
		this.cargoCapacity=cargoCapacity;
	}
	public double getCargoCapacity() {
		return cargoCapacity;
	}

	public void setCargoCapacity(double cargoCapacity) {
		this.cargoCapacity = cargoCapacity;
	}
	
}

Test.java 測試類

package com.imooc;

import java.util.Scanner;

public class Test{
	
	public static void main(String[] args) {
		Car[] carsForRent={new passengerCar("奧迪A4",500,4),new passengerCar("馬自達6", 400, 4),new PickUp("皮卡雪6", 450,2, 4),new passengerCar("金龍", 800, 20),new Trunk("松花江", 400, 4),new Trunk("依維柯", 1000, 20)};
		System.out.println("歡迎使用答答租車系統：");
		System.out.println("你是否需要租車：1是 0否");
		Scanner scan=new Scanner(System.in);
		String input=scan.next();
		if(input.equals("1")){
			System.out.println("你可租車的類型及其價目表：");
			System.out.println("序號\t汽車名稱\t租金\t\t容量");
			int i=1;
			for(Car currentCar:carsForRent){
				if(currentCar instanceof passengerCar){
					System.out.println("" + i +"\t"+ currentCar.getName() + "\t" + currentCar.getRent() + "元/天\t" + ((passengerCar)currentCar).getPeopleCapacity()+"人");
				}
				if(currentCar instanceof PickUp){
					System.out.println("" + i +"\t"+ currentCar.getName() + "\t" + currentCar.getRent() + "元/天\t" + ((PickUp)currentCar).getPeopleCapacity()+"人  "+((PickUp)currentCar).getCargoCapacity()+"噸");
				}
				if(currentCar instanceof Trunk){
					System.out.println("" + i +"\t"+ currentCar.getName() + "\t" + currentCar.getRent() + "元/天\t" + ((Trunk)currentCar).getCargoCapacity()+"噸");
				}
				i++;
			}
			System.out.println("請輸入您要租汽車的數量：");
			int rentNum=scan.nextInt();
			int[] carsRent=new int[rentNum];
			for(int j=0;j<rentNum;j++){
				System.out.println("請輸入第"+(j+1) + "輛車的序號：");
				carsRent[j]=scan.nextInt();
			}
			System.out.println("請輸入租車天數：");
			int daysRent=scan.nextInt();
			int totalPeopley=0;
			int totalCargoy=0;
			double totalMoney=0;
			String carsForPeople="";
			String carsForCargo="";
			for(int j=0;j<rentNum;j++){
				totalMoney+=carsForRent[carsRent[j]-1].getRent();
				if(carsForRent[carsRent[j]-1] instanceof passengerCar){
					totalPeopley+=((passengerCar)carsForRent[carsRent[j]-1]).getPeopleCapacity();
					carsForPeople+=carsForRent[carsRent[j]-1].getName()+"\t";
				}
				if(carsForRent[carsRent[j]-1] instanceof PickUp){
					totalPeopley+=((PickUp)carsForRent[carsRent[j]-1]).getPeopleCapacity();
					totalCargoy+=((PickUp)carsForRent[carsRent[j]-1]).getCargoCapacity();
					carsForPeople+=carsForRent[carsRent[j]-1].getName()+"\t";
					carsForCargo+=carsForRent[carsRent[j]-1].getName()+"\t";
				}
				if(carsForRent[carsRent[j]-1] instanceof Trunk){
					totalCargoy+=((Trunk)carsForRent[carsRent[j]-1]).getCargoCapacity();
					carsForCargo+=carsForRent[carsRent[j]-1].getName()+"\t";
				}
			}
			totalMoney=totalMoney*daysRent;
			System.out.println("您的賬單：");
			System.out.println("***可載人的車有：");
			System.out.println(carsForPeople +"\t共載人：" +totalPeopley+"人" );
			System.out.println("***載貨的車有：");
			System.out.println(carsForCargo +"\t共貨：" +totalCargoy+"噸" );
			System.out.println("***租車總價格："+totalMoney+"元");
			scan.close();
		}
	}

}