本文实例为大家分享了java实现答答租车系统的具体代码，供大家参考，具体内容如下

项目需求：

基本界面需求：

and:

最后是把账单打印出来：

个人代码实现

基本思路：考虑到车辆之间的共性，设置一个父类car, 子类mannedcar(载人), truck(载货)，bothcary(既载人又载货)，三者继承父类car的price, name属性, getname()方法, 同时重写getpersonnum, getgoodsnum方法。

car.java:

package car;

public abstract class car {

protected int price;

protected string name;

protected int getprice() {

return price;

}

protected string getname() {

return name;

}

public int getpersonnum() {

// todo auto-generated method stub

return 0;

}

public int getgoodsnum() {

// todo auto-generated method stub

return 0;

}

}

mannedcar.java:

package car;

public class mannedcar extends car {

private int personnum;

public mannedcar() {

this.personnum = 0;

this.price = 0;

this.name = "";

}

public mannedcar(int personnum, int price, string name) {

this.personnum = personnum;

this.price = price;

this.name = name;

}

@override

public int getpersonnum() {

return personnum;

}

}

truck.java:

package car;

public class truck extends car{

private int goodsnum;

public truck() {

this.price = 0;

this.goodsnum = 0;

this.name = "";

}

public truck(int price, int goodsnum, string name) {

this.price = price;

this.goodsnum = goodsnum;

this.name = name;

}

@override

public int getgoodsnum() {

return goodsnum;

}

}

bothcarry.java:

package car;

public class bothcarry extends car {

private int personnum;

private int goodsnum;

public bothcarry() {

this.personnum = 0;

this.goodsnum = 0;

this.name = "";

this.price = 0;

}

public bothcarry(int price, int personnum,

int goodsnum, string name) {

this.personnum = personnum;

this.goodsnum = goodsnum;

this.price = price;

this.name = name;

}

public int getpersonnum() {

return personnum;

}

public int getgoodsnum() {

return goodsnum;

}

}

系统：

carsystem.java:

package car;

import java.util.scanner;

import java.util.arraylist;

public class carsystem {

private static string goodbyeinfo = "欢迎再次使用本系统，再见！";

private static int dayborrow;

public static void beginsystem() {

carsystem.systemwelcome();

scanner scanner = new scanner(system.in);

string usercommand = scanner.next();

switch(usercommand){

case "1":

carsystem.getuserinput();

break;

case "0":

system.out.println(goodbyeinfo);

break;

default:

system.out.println("输入错误..end running..");

system.exit(0);

break;

}

}

public static void systemwelcome() {

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");

}

public static void getuserinput() {

int numcarborrow = 0;

arraylist carlist = new arraylist(6);

carlist.add(new mannedcar(4,500,"奥迪a4"));

carlist.add(new mannedcar(4,400,"马自达6"));

carlist.add(new bothcarry(450,4,2,"皮卡雪6"));

carlist.add(new mannedcar(20,800,"金龙"));

carlist.add(new truck(400,4,"松花江"));

carlist.add(new truck(1000,20,"依维河"));

system.out.println("请输入您要租汽车的数量:");

scanner sr = new scanner(system.in);

numcarborrow = sr.nextint();

int[] carnumlist = new int[numcarborrow];

for(int i=0;i

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

if (sr.hasnext()) {

carnumlist[i] = sr.nextint();

}

}

system.out.println("请输入租车天数:");

if (sr.hasnext()) {

dayborrow = sr.nextint();

}

sr.close();

stringbuilder manned = new stringbuilder();

int numofmanned = 0;

stringbuilder goods = new stringbuilder();

int numofgoods = 0;

int totalcost = 0;

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

if(carnumlist[i]>0 && carnumlist[i] < 3 || carnumlist[i]==4) {

manned.append(" ");

manned.append(carlist.get(carnumlist[i]-1).getname());

numofmanned += carlist.get(carnumlist[i]-1).getpersonnum();

}

else if(carnumlist[i]==3) {

manned.append(" ");

manned.append(carlist.get(carnumlist[i]-1).getname());

goods.append(" ");

goods.append(carlist.get(carnumlist[i]-1).getname());

numofmanned += carlist.get(carnumlist[i]-1).getpersonnum();

numofgoods += carlist.get(carnumlist[i]-1).getgoodsnum();

}

else {

goods.append(" ");

goods.append(carlist.get(carnumlist[i]-1).getname());

numofgoods += carlist.get(carnumlist[i]-1).getgoodsnum();

}

totalcost += carlist.get(carnumlist[i]-1).getprice();

}

//output

system.out.println("您的账单:\n***可载人的车有:");

system.out.println(manned + " 共载人: " + numofmanned);

system.out.println("***载货的车有:\n" + goods + " 共载货 : " + numofgoods + "吨");

system.out.println("***租车总价格: " + totalcost * dayborrow + "元");

}

}

主程序:

package car;

public class carsystemtest {

public static void main(string[] args) {

// todo auto-generated method stub

carsystem.beginsystem();

}

}

运行结果：

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