父类：
package com.lb;
public class ACar {
}子类：
package com.lb;
public class Aodi extends ACar{
private String name;
private int peopleNum;
private int cargoNum;
private int rentMoney;
public Aodi(String name,int peopleNum,int cargoNum,int rentMoney){
this.name=name;
this.peopleNum=peopleNum;
this.cargoNum=cargoNum;
this.rentMoney=rentMoney;
}
@Override
public String toString() {
return name + " 载客" + peopleNum + " 载货" + cargoNum + " 租金" + rentMoney;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getPeopleNum() {
return peopleNum;
}
public void setPeopleNum(int peopleNum) {
this.peopleNum = peopleNum;
}
public int getCargoNum() {
return cargoNum;
}
public void setCargoNum(int cargoNum) {
this.cargoNum = cargoNum;
}
public int getRentMoney() {
return rentMoney;
}
public void setRentMoney(int rentMoney) {
this.rentMoney = rentMoney;
}
}
实现类：
package com.lb;
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
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 sc=new Scanner(System.in);
int in=sc.nextInt();
if(in==1){
System.out.println("您可以租车的类型及价目表：");
System.out.println("序号 汽车名称 容量 租金");
ACar[] carForRent={new Aodi("奥迪",4,0,500),new Mazida("马自达",4,3,400),
new Pikaxue("皮卡雪",4,2,450),new Jinlong("金龙",20,0,800)};
for(int i=0;i<carForRent.length;i++){
System.out.println((i+1)+" "+carForRent[i].toString());
}
System.out.println("请输入租车的数量：");
int num=sc.nextInt();
int[] a=new int[5];
for(int i=0;i<num;i++){
System.out.println("请输入第"+(i+1)+"辆车的序号：");
a[i]=sc.nextInt();
}
System.out.println("请输入租车天数：");
int day=sc.nextInt();
int cargoNum=0,peopleNum=0,money=0;
String peopleName="",cargoName="";
for(int i=0;i<num;i++){
if(carForRent[a[i]-1] instanceof Aodi){
Aodi aoid= (Aodi)carForRent[a[i]-1];
if(aoid.getPeopleNum()!=0){
peopleName+=(aoid.getName()+" ");
peopleNum += aoid.getPeopleNum();
}
if(aoid.getCargoNum()!=0){
cargoName+=(aoid.getName()+" ");
cargoNum += aoid.getCargoNum();
}
money+=aoid.getRentMoney();
}
if(carForRent[a[i]-1] instanceof Jinlong){
Jinlong jinlong= (Jinlong)carForRent[a[i]-1];
if(jinlong.getPeopleNum()!=0){
peopleName+=(jinlong.getName()+" ");
peopleNum += jinlong.getPeopleNum();
}
if(jinlong.getCargoNum()!=0){
cargoName+=(jinlong.getName()+" ");
cargoNum += jinlong.getCargoNum();
}
money+=jinlong.getRentMoney();
}
if(carForRent[a[i]-1] instanceof Mazida){
Mazida mazida= (Mazida)carForRent[a[i]-1];
if(mazida.getPeopleNum()!=0){
peopleName+=(mazida.getName()+" ");
peopleNum += mazida.getPeopleNum();
}
if(mazida.getCargoNum()!=0){
cargoName+=(mazida.getName()+" ");
cargoNum += mazida.getCargoNum();
}
money+=mazida.getRentMoney();
}
if(carForRent[a[i]-1] instanceof Pikaxue){
Pikaxue pikaxue= (Pikaxue)carForRent[a[i]-1];
if(pikaxue.getPeopleNum()!=0){
peopleName+=(pikaxue.getName()+" ");
peopleNum += pikaxue.getPeopleNum();
}
if(pikaxue.getCargoNum()!=0){
cargoName+=(pikaxue.getName()+" ");
cargoNum += pikaxue.getCargoNum();
}
money+=pikaxue.getRentMoney();
}
}
System.out.println("可以载人的车有：\n"+peopleName+" 共"+peopleNum+"人。");
System.out.println("可以载货的车有：\n"+cargoName+" 共"+cargoNum+"吨。");
System.out.println("租车总价格："+money*day+"元！");
sc.close();
}
}
}