要求：有客车，货车，皮卡三大类的车可以出租，实现出租车的数量，价格以及货物人数的一个报备。
思路：先写个 车的抽象类然后在分别写出客车，货车，皮卡的类，再用super继承抽象类。
然后写个测试类实现租车系统的运行生成账单。
car 抽象类
package cars01;
public abstract class car {
String carName;
int persons;
double weights;
int rent;
public car(String carName,int persons,int rent)
{
this.carName=carName;
this.persons=persons;
this.rent=rent;
}
public car(String carName,double weights,int rent)
{
this.carName=carName;
this.weights=weights;
this.rent=rent;
}
public car(String carName,double weights,int persons,int rent)
{
this.carName=carName;
this.persons=persons;
this.weights=weights;
this.rent=rent;
}
abstract void show();
}passenges类
package cars01;
public class passengesCar extends car {//乘客类
public passengesCar(String carName,int persons,int rent){
super(carName,persons,rent);
}
public void show(){
System.out.println(carName+" "+rent+"元/天 载人："+persons+"人");
}
}
Truckcar类
package cars01;
public class passengesCar extends car {//乘客类
public passengesCar(String carName,int persons,int rent){
super(carName,persons,rent);
}
public void show(){
System.out.println(carName+" "+rent+"元/天 载人："+persons+"人");
}
}
pickupcar类
package cars01;
public class pickupCar extends car {//皮卡类
public pickupCar(String carName,double weights,int persons,int rent) {
super(carName,weights,persons,rent);
}
void show() {
System.out.println(carName+" "+rent+"元/天 载货量："+weights+"kg"+"载客数:"+persons+"人");
}
}
test类
package cars01;
import java.util.Scanner;
import java.lang.System;
public class test {
public static void main(String[] args) {
car [] cars= {new TruckCar("松花江",4.0,400),new TruckCar("依维柯",20.0,1000),new pickupCar("皮卡雪",4.0,2,450),
new passengesCar("马自达",4,400),new passengesCar("奥迪A4",4,500)};
System.out.println("欢迎使用租车系统");
System.out.println("您是否要租车:1是 0否");
Scanner s1=new Scanner(System.in);
int x=s1.nextInt();
if(x==1)
{
System.out.println("您可租车的类型及其价目表: ");
System.out.println("序号 汽车名字 租金 容量");
for(int i=0;i<cars.length;i++)
{
System.out.print(i+" ");
cars[i].show();
}
System.out.println("请输入您要租汽车的数量");
int y=s1.nextInt();
int [] num=new int[y];
for(int i=0;i<y;i++)
{
System.out.printf("请输入第%d辆车的序号: ",i+1);
num[i]=s1.nextInt();
}
System.out.println("请输入租车天数");
int days=s1.nextInt();
System.out.println("您的账单: ");
test ans=new test();
ans.bill(num,cars,days);
}
else
{
System.out.println("再见");
System.exit(0);
}
return ;
}
public void bill(int [] num,car [] cars,int days)
{
int persons=0;
double weights=0;
int rents=0;
for(int i=0;i<num.length;i++)
{
if(num[i]>2)
{
System.out.println(cars[num[i]].carName+" ");
persons+=cars[num[i]].persons;
rents+=cars[num[i]].rent;
}
else
{
continue;
}
}
for(int i=0;i<num.length;i++)
{
if(num[i]<3)
{
System.out.println(cars[num[i]].carName+" ");
weights+=cars[num[i]].weights;
rents+=cars[num[i]].rent;
}
}
System.out.println("共载人: "+persons+"人");
System.out.println("共载货: "+weights+"吨");
System.out.println("租车总价格: "+rents*days+"元");
return ;
}
}