//Car
package com.Car;
public class Car {
String name;
double rent;
public void Car(String name,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
package com.Car;
public class PassengerCar extends Car {
private double peopleC;
public PassengerCar(String name,double rent,double peopleC){
this.name = name;
this.rent = rent;
this.peopleC = peopleC;
}
public double getPeopleC() {
return peopleC;
}
public void setPeopleC(double peopleC) {
this.peopleC = peopleC;
}
}
//Pickup
package com.Car;
public class Pickup extends Car{
private double peopleC;
private double cargoC;
public Pickup(String name,double rent,double cargoC,double peopleC) {
this.name = name;
this.rent = rent;
this.cargoC = cargoC;
this.peopleC = peopleC;
}
public double getCargoC() {
return cargoC;
}
public void setCargoC(double cargoC) {
this.cargoC = cargoC;
}
public double getPeopleC() {
return peopleC;
}
public void setPeopleC(double peopleC) {
this.peopleC = peopleC;
}
}
//Truck
package com.Car;
public class Truck extends Car {
private double cargoC;
public Truck(String name,double rent,double cargoC) {
this.name = name;
this.rent = rent;
this.cargoC = cargoC;
}
public double getCargoC() {
return cargoC;
}
public void setCargoC(double cargoC) {
this.cargoC = cargoC;
}
}
package com.Car;
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Car[] cars = { new PassengerCar("金龙大巴", 1000, 40),
new PassengerCar("奥迪A6", 500, 4), new Pickup("小皮卡", 300, 5, 4),
new Truck("大卡车", 800, 25) };
Scanner Type = new Scanner(System.in);
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");
String input = Type.next();
if (input.equals("1")) {
System.out.println("您可租车的类型及价目表：");
System.out.println("序号\t汽车名称\t租金\t\t容量");
int i = 1;// 车辆序号
for (Car Allcars : cars) {
if (Allcars instanceof PassengerCar) {
System.out.println(i + "\t" + Allcars.getName() + "\t"
+ Allcars.getRent() + "/天\t载人："
+ ((PassengerCar) Allcars).getPeopleC() + "/人");
i += 1;
}
if (Allcars instanceof Pickup) {
System.out.println(i + "\t" + Allcars.getName() + "\t"
+ Allcars.getRent() + "/天\t载人："
+ ((Pickup) Allcars).getPeopleC() + "/人 载货："
+ ((Pickup) Allcars).getCargoC() + "吨");
i += 1;
}
if (Allcars instanceof Truck) {
System.out.println(i + "\t" + Allcars.getName() + "\t"
+ Allcars.getRent() + "/天\t载货："
+ ((Truck) Allcars).getCargoC() + "吨");
i += 1;
}
}
System.out.println("请输入您要租车的数量：");
int num = Type.nextInt();
double rentsum = 0;// 租车总金额
double Peosum = 0;// 载人总数
double CargoCsum = 0;// 载货总数
String[] PassengerName = new String[4];// 存放可载人车辆的name的数组
String[] CargoCars = new String[4];// 存放可载货车辆的name的数组
int p = 0;
int c = 0;
for (int n = 1; n <= num; n++) {
System.out.println("输入第" + n + "辆车的序号：");
int x = Type.nextInt();
rentsum += cars[x - 1].rent;// 计算租车金额
switch (x - 1) {
case 0:
if (cars[x - 1] instanceof PassengerCar) {
PassengerName[p] = cars[x - 1].name;
Peosum += ((PassengerCar) cars[x - 1]).getPeopleC();
p += 1;
}
if (cars[x - 1] instanceof Pickup) {
PassengerName[p] = cars[x - 1].name;
CargoCars[c] = cars[x - 1].name;
Peosum += ((Pickup) cars[x - 1]).getPeopleC();
CargoCsum += ((Pickup) cars[x - 1]).getCargoC();
p += 1;
c += 1;
}
if (cars[x - 1] instanceof Truck) {
CargoCars[c] = cars[x - 1].name;
CargoCsum += ((Truck) cars[x - 1]).getCargoC();
c += 1;
}
break;
case 1:
if (cars[x - 1] instanceof PassengerCar) {
PassengerName[p] = cars[x - 1].name;
Peosum += ((PassengerCar) cars[x - 1]).getPeopleC();
p += 1;
}
if (cars[x - 1] instanceof Pickup) {
PassengerName[p] = cars[x - 1].name;
CargoCars[c] = cars[x - 1].name;
Peosum += ((Pickup) cars[x - 1]).getPeopleC();
CargoCsum += ((Pickup) cars[x - 1]).getCargoC();
p += 1;
c += 1;
}
if (cars[x - 1] instanceof Truck) {
CargoCars[c] = cars[x - 1].name;
CargoCsum += ((Truck) cars[x - 1]).getCargoC();
c += 1;
}
break;
case 2:
if (cars[x - 1] instanceof PassengerCar) {
PassengerName[p] = cars[x - 1].name;
Peosum += ((PassengerCar) cars[x - 1]).getPeopleC();
p += 1;
}
if (cars[x - 1] instanceof Pickup) {
PassengerName[p] = cars[x - 1].name;
CargoCars[c] = cars[x - 1].name;
Peosum += ((Pickup) cars[x - 1]).getPeopleC();
CargoCsum += ((Pickup) cars[x - 1]).getCargoC();
p += 1;
c += 1;
}
if (cars[x - 1] instanceof Truck) {
CargoCars[c] = cars[x - 1].name;
CargoCsum += ((Truck) cars[x - 1]).getCargoC();
c += 1;
}
break;
case 3:
if (cars[x - 1] instanceof PassengerCar) {
PassengerName[p] = cars[x - 1].name;
Peosum += ((PassengerCar) cars[x - 1]).getPeopleC();
p += 1;
}
if (cars[x - 1] instanceof Pickup) {
PassengerName[p] = cars[x - 1].name;
CargoCars[c] = cars[x - 1].name;
Peosum += ((Pickup) cars[x - 1]).getPeopleC();
CargoCsum += ((Pickup) cars[x - 1]).getCargoC();
p += 1;
c += 1;
}
if (cars[x - 1] instanceof Truck) {
CargoCars[c] = cars[x - 1].name;
CargoCsum += ((Truck) cars[x - 1]).getCargoC();
c += 1;
}
break;
default:
break;
}
}
System.out.println("请输入租车天数：");
int y = Type.nextInt();
System.out.println("您的账单：");
System.out.println("***可载人的车有：");
for (String pn : PassengerName) {
System.out.print(pn + "\t");
}
System.out.println("载人总数：" + Peosum + "人");
System.out.println("***可载货的车有：");
for (String cc : CargoCars) {
System.out.print(cc + "\t");
}
System.out.println("载货总数：" + CargoCsum + "吨");
rentsum = rentsum * y;
System.out.println("***租车总金额：" + rentsum);
} else if (input.equals("2")) {
System.out.println("欢迎您访问答答租车系统，再见。");
} else {
System.out.println("输入错误！");
main(null);// 再次调用主函数
}
}
}
3 回答
已采纳
yanrun
TA贡献317条经验 获得超240个赞
先回答你的问题动态数组可以使用ArrayList。再说你的代码中有几个错误Car类的构造方法是不需要返回值的，构造方法后面的；也是没用的，还有就是Car类需要一个无参的构造方法，否则是无法通过编译的，你的输入提示是输入1和0，然而if判断的时候变成了1和2。最后提几个建议，变量名首字母最好是小写，Scanner类的对象type在最后最好调用close方法关闭资源，获得输入数据和计算价格的代码可以变成两个方法，这样可以提高程序的灵活性。希望对你有帮助。
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