主程序：client.java

package views;

import java.util.Scanner;

public class Client {

public static void main(String[] args) {

// TODO Auto-generated method stub

System.out.println("欢迎使用滴滴租车系统：");

System.out.println("您是否要租车：1是0否");

Scanner input = new Scanner(System.in);

int Num;

if (input.nextInt() == 1) {

System.out.println("您可租用的车型及价目表：");

System.out.println("序号 汽车名称 租金 容量");

System.out.println("1. 奥迪A4 500元/天 载人：4人");

System.out.println("2. 马自达 400元/天 载人：4人");

System.out.println("3. 皮卡雪6 450元/天 载人：4人 载货：2吨");

System.out.println("4. 金龙 800元/天 载人：20人");

System.out.println("5. 松花江 400元/天 载货：40吨");

System.out.println("6. 依维柯 1000元/天 载货：20吨");

System.out.println("请输入您要租汽车的数量：");

Num = input.nextInt();

AVehicle[] vehicle = new AVehicle[Num];

for (int i = 0; i < vehicle.length; i++) {

System.out.println("请输入第" + (i + 1) + "车的序号：");

switch (input.nextInt()) {

case 1:

vehicle[i] = new Vehicle1();

break;

case 2:

vehicle[i] = new Vehicle2();

break;

case 3:

vehicle[i] = new Vehicle3();

break;

case 4:

vehicle[i] = new Vehicle4();

break;

case 5:

vehicle[i] = new Vehicle5();

break;

case 6:

vehicle[i] = new Vehicle6();

break;

default:

System.out.println("无此序号车辆");

input.close();

}

}

System.out.println("请输入租车天数：");

int Days = input.nextInt();

int manAvailableCount = 0;

int goodsAvailableCount = 0;

String manAvailableVehicle = "";

String goodsAvailableVehicle = "";

int capacityAll = 0;

float burdenAll = 0f;

float price = 0;

System.out.println("您的账单：");

for (int i = 0; i < vehicle.length; i++) {

if (vehicle[i].capacity != 0) {

manAvailableCount++;

manAvailableVehicle = manAvailableVehicle + vehicle[i].name + " ";

capacityAll = capacityAll + vehicle[i].capacity;

}

if (vehicle[i].burden != 0) {

goodsAvailableCount++;

goodsAvailableVehicle = goodsAvailableVehicle + vehicle[i].name + " ";

burdenAll = burdenAll + vehicle[i].burden;

}

price = price + vehicle[i].rent * Days;

}

System.out.println("*****可载人车有" + manAvailableCount + "辆：");

System.out.println(manAvailableVehicle.toString() + "共可载" + capacityAll + "人");

System.out.println("*****可载货车有" + goodsAvailableCount + "辆：");

System.out.println(goodsAvailableVehicle.toString() + "共可载" + burdenAll + "吨");

System.out.println("*****租车总价格：" + price + "元");

input.close();

} else {

input.close();

System.out.println("谢谢使用");

}

}

}

一个父类AVehicle.java

package views;

public class AVehicle {

public int NO;

public String name;

public float rent; // 租金

public int capacity; // 载人数

public float burden; // 载货量

public AVehicle(){

this.NO = 0;

this.name = "";

this.rent = 0f;

this.capacity = 0;

this.burden = 0f;

}

}

6个子类Vehicle1.java ...... Vehicle6.java类似。

Vehicle1.java

package views;

public class Vehicle1 extends AVehicle {

public Vehicle1() {

this.name = "奥迪A4";

this.NO = 1;

this.rent = 500f;

this.capacity = 4;

}

}

Vehicle2.java

package views;

public class Vehicle2 extends AVehicle {

public Vehicle2() {

this.NO = 2;

this.name = "马自达6";

this.rent = 400f; // 租金

this.capacity = 4; // 载人数

}

}

Vehicle3.java

package views;

public class Vehicle3 extends AVehicle {

public Vehicle3() {

this.NO = 3;

this.name = "皮卡雪6";

this.rent = 450f; // 租金

this.capacity = 4; // 载人数

this.burden = 2; // 载货量

}

}

Vehicle4.java

package views;

public class Vehicle4 extends AVehicle {

public Vehicle4() {

this.NO = 4;

this.name = "金龙";

this.rent = 800f; // 租金

this.capacity = 20; // 载人数

}

}

Vehicle5.java

package views;

public class Vehicle5 extends AVehicle {

public Vehicle5() {

this.NO = 5;

this.name = "松花江";

this.rent = 400f; // 租金

this.burden = 4f; // 载货量

}

}

Vehicle6.java

package views;

public class Vehicle6 extends AVehicle {

public Vehicle6() {

this.NO = 6;

this.name = "依维柯";

this.rent = 1000f; // 租金

this.burden = 20f; // 载货量

}

}

实际运行图：