月已过半
2015-03-26 20:30
/* 哒哒租车系统 */ import java.util.*; abstract class Car //车 { private int id,rent; private String name; Car(int id,String name,int rent){ this.id=id; this.name=name; this.rent=rent; } public int getId() //车的ID { return this.id; } public String getName() //车的名字 { return this.name; } public int getRent() //获取价格 { return this.rent; } abstract public String Show(); } /*载人的汽车*/ class MannedCar extends Car { private int capacity; //可载人数 MannedCar(int id,String name,int rent,int capacity) { super(id,name,rent); this.capacity=capacity; } public int getCapacity() { return capacity; } public String Show() { return "载人:"+capacity+"人"; } } /*载货的汽车*/ class CargoCar extends Car { private int weight; //货车载重量 public CargoCar(int id,String name,int rent,int weight) { super(id,name,rent); this.weight=weight; } public int getWeight() { return weight; } public String Show() { return "载货:"+weight+"吨"; } } /*皮卡*/ class Pickup extends MannedCar //继承载人的汽车类 { private int weight; //添加一个载重 public Pickup(int id,String name,int rent,int capacity,int weight) { super(id,name,rent,capacity); this.weight=weight; } public int getWeight() { return this.weight; } public String Show() { return "载人:"+getCapacity()+"人"+" 载货:"+this.weight+"吨"; } } public class Demo { public static void main(String[] args) { int price=0,tWeight=0,tCapacity=0; //总价,总载重,总人数 Car[] list={new MannedCar(1,"奥迪A4",500,4),new MannedCar(2,"马自达6",400,4), new Pickup(3,"皮卡雪6",450,4,2),new MannedCar(4,"金龙",800,20), new CargoCar(5,"松花江",400,4),new CargoCar(6,"依维柯",1000,20)}; //价目表 Scanner io=new Scanner(System.in); System.out.println("欢迎使用哒哒租车系统:"); System.out.println("您是否要租车:1是 0否"); int n=io.nextInt(); if(n==1) { System.out.println("您可租车的类型及其价目表:"); System.out.println("序号\t汽车名称 租金\t\t容量"); for(Car i:list) //输出价目表 System.out.println(i.getId()+".\t"+i.getName()+"\t "+i.getRent() +"元/天\t"+i.Show()); System.out.println("请输入您要租汽车的数量:"); n=io.nextInt(); String[] manned=new String[n]; //存储载人汽车名 String[] cargo=new String[n]; //存储载货汽车名 int cCount=0,mCount=0; for(int j=1;j<=n;j++) { System.out.println("请输入第"+j+"辆车的序号"); int num=io.nextInt(); //遍历汽车类数组 for(Car i:list) { //比较输入的汽车序号,找到对应的汽车对象 if(num==i.getId()) { //instanceof判断i对象是否属于右边的类 if(i instanceof Pickup) { tWeight+=((Pickup)i).getWeight(); tCapacity+=((Pickup)i).getCapacity(); manned[mCount++]=i.getName(); cargo[cCount++]=i.getName(); } else if(i instanceof CargoCar) { tWeight+=((CargoCar)i).getWeight(); cargo[cCount++]=i.getName(); } else { tCapacity+=((MannedCar)i).getCapacity(); manned[mCount++]=i.getName(); } price+=i.getRent(); } } } System.out.println("请输入租车天数:"); n=io.nextInt(); price*=n; System.out.println("您的账单:"); System.out.println("***可载人的车有:"); for(int i=0;i<mCount;i++) System.out.print(manned[i]+" "); System.out.println("\t共载人:"+tCapacity+"人"); System.out.println("***可载货的车有:"); for(int i=0;i<cCount;i++) System.out.print(cargo[i]+" "); System.out.println("\t共载货:"+tWeight+"吨"); System.out.println("***租车总价格:"+price+"元"); } } }
Car中可以直接增加吨位、座位就通用了:
/*
* 车类
*/
public abstract class Car
{
private int id,rent;
private String name;
private int seat;
private float ton;
Car(int id, String name, float ton, int seat, int rent){
this.id=id;
this.name=name;
this.rent=rent;
this.ton=ton;
this.seat=seat;
}
public int getId() //车的ID
{
return this.id;
}
public String getName() //车的名字
{
return this.name;
}
public int getRent() //获取价格
{
return this.rent;
}
public float getTon()
{
return this.ton;
}
public float getSeat()
{
return this.seat;
}
abstract public String Show();
}
将Car中的import java.util.*; 删除,增加到Demo.java开首行
Java入门第二季 升级版
530655 学习 · 6091 问题
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