汽车租赁系统的简单实现

java基础，简单实现汽车租赁功能，适合初学者。实现选车 租车 租赁天数 计算价格功能。

机动车类 我这里把它定义为抽象类，因为我要实现一个ClacRent的方法，我这里还没有想好要怎么实现，所以就先写着一个抽象方法。

public abstract class MotoVehicle {
private String no;
private String brand;
private String color;
private int mileage;
public MotoVehicle(){}
public MotoVehicle(String no, String brand, String color, int mileage) {
super();
this.no = no;
this.brand = brand;
this.color = color;
this.mileage = mileage;
}
abstract int ClacRent(/*int days*/);
public String getNo() {
return no;
}
public void setNo(String no) {
this.no = no;
}
public String getBrand() {
return brand;
}
public void setBrand(String brand) {
this.brand = brand;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public int getMileage() {
return mileage;
}
public void setMileage(int mileage) throws Exception {
if(mileage<0){
mileage = 10;
throw new Exception("里程必须大于0");
}
this.mileage = mileage;
}
}

Bus类

public class Bus extends MotoVehicle {
private int seatCount;
public Bus(String no, String brand, String color, int mileage, int seatCount) {
super(no,brand,color,mileage);
this.seatCount = seatCount;
}
public int getSeatCount() {
return seatCount;
}
public void setSeatCount(int seatCount) {
this.seatCount = seatCount;
}
@Override
int ClacRent(/*int days*/) {
int rent = 0;
        if (getSeatCount() <= 16) {
            rent = 800;
        } else {
            rent = 1500;
        }
        return rent;
}
}

Car类

public class Car extends MotoVehicle {
private String type;
public Car(String no, String brand, String color, int mileage, String type) {
super(no,brand,color,mileage);
this.type = type;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
@Override
int ClacRent(/*int days*/) {
int rent = 0;
        if ("别克商务GL8".equals(getType())) {
            rent = 600;
        } else if ("宝马550i".equals(getType())) {
            rent = 500;
        } else if ("别克林荫大道".equals(getType())) {
            rent = 300;
        }
        return rent;
}
}

Main方法：有数据初始化，还有租车模块的实现。

import java.util.Scanner;
public class Main {
public static void main(String[] args) {
//初始化
Car[] c = new Car[3];
Bus[] b = new Bus[4];
c[0] = new Car("粤A10001", "别克", "黑", 0, "别克商务GL8");
c[1] = new Car("粤A10002", "宝马", "蓝", 0, "宝马550i");
c[2] = new Car("粤A10003", "别克", "红", 0, "别克林荫大道");
b[0] = new Bus("粤A10004", "金杯", "黄", 0, 16);
b[1] = new Bus("粤A10005", "金杯", "金", 0, 34);
b[2] = new Bus("粤A10006", "金龙", "白", 0, 16);
b[3] = new Bus("粤A10007", "金龙", "银", 0, 34);
System.out.println("----欢迎租车----\n");
for(int i = 0; i<c.length; i++) {
System.out.println("序号："+(i+1)+", 品牌："+c[i].getBrand()
+", 车型："+c[i].getType()+", 租金："+c[i].ClacRent(/*i*/));
}
for(int i = 0; i<b.length; i++) {
System.out.println("序号："+(i+4)+", 品牌："+b[i].getBrand()+", 座位数："+b[i].getSeatCount()+", 租金："+b[i].ClacRent(/*i*/));
}
//租车模块
byte[] byts = new byte[1024];
int k = 0;
int num = 0;
int d = 0;
//int sum1 = 0;int sum2 = 0;int sum3 = 0;int sum4 = 0;int sum5 = 0; int sum6 = 0; int sum7 =0;
int sum[] = {0,0,0,0,0,0,0};
int sumRent = 0;
Scanner sc = new Scanner(System.in);
while (true) {
try {
System.out.println("\n\n是否需要租车(0-是，其他键退出)：");
int n = System.in.read(byts);
String s = new String(byts, 0, n);
if (s.trim().length() == 0) {
continue;
}
int input = Integer.parseInt(s.trim()); // 强制转换为需要的类型
if (input != 0) {
System.out.println("退出!");
return;
}
do{
System.out.print("请选择您需要的车型(选序号)：");
n = System.in.read(byts);
s = new String(byts,0,n);
int key = Integer.parseInt(s.trim());
switch(key) {
case 1:
System.out.print("您选择的是"+c[0].getType()+"\n请输入租赁数量：");
num = sc.nextInt();
System.out.print("请输入租赁天数：");
d = sc.nextInt() * c[0].ClacRent(/*0*/);
sum[0] = num * d;
System.out.print("价格为："+sum[0] );
break;
case 2:
System.out.print("您选择的是"+c[1].getType()+"\n请输入租赁数量：");
num = sc.nextInt();
System.out.print("请输入租赁天数：");
d = sc.nextInt() * c[1].ClacRent(/*0*/);
sum[1] = num * d;
System.out.print("价格为："+sum[1] );
break;
case 3:
System.out.print("您选择的是"+c[2].getType()+"\n请输入租赁数量：");
num = sc.nextInt();
System.out.print("请输入租赁天数：");
d = sc.nextInt() * c[2].ClacRent(/*0*/);
sum[2] = num * d;
System.out.println("价格为："+sum[2] );
break;
case 4:
case 5:
case 6:
case 7:
System.out.println("暂时没有此类车型！");
break;
default:
System.out.println("输入有误！");
break;
}
System.out.println("\n如果还有租赁需求请按0，按任意键提交订单！");
k = sc.nextInt();
}while(k == 0);
sumRent = sum[0]+sum[1]+sum[2];
System.out.println("请您支付"+sumRent+"元，凭票出门右转提车，欢迎再次光临！");
} catch (Exception e) {
e.printStackTrace();
}
}
}
}

这就是简单的汽车租赁系统，希望对初学者有帮助。有问题的朋友可以留言！

日后有时间我会更新如何用SSM框架实现一些简单的项目，如博客平台，管理系统等。