纯萌新 我感觉我的代码好繁琐 有很多地方需要优化 改进
布小新
2018-07-18 09:30
package project4;
public abstract class Car {
public abstract void price();
}
package project4;
public class Aodi extends Car {
public int num = 1;
public String name = "奥迪A4";
public int rent = 500;
public int manned = 4;
@Override
public void price() {
// TODO Auto-generated method stub
System.out.println( +num+". "+name+" "+rent+"/天 载人:" +manned + "人" );
}
}
package project4;
public class Mazida extends Car {
public int num = 2;
public String name = "马自达6";
public int rent = 400;
public int manned = 4;
@Override
public void price() {
// TODO Auto-generated method stub
System.out.println( +num+". "+name+" "+rent+"/天 载人:" +manned + "人" );
}
}
package project4;
public class Pikaxue extends Car {
public int num = 3;
public String name = "皮卡雪6";
public int rent = 450;
public int manned = 4;
public float cargo = 2.0f;
@Override
public void price() {
// TODO Auto-generated method stub
System.out.println( +num+". "+name+" "+rent+"/天 载人:" +manned + "载货："+ cargo +"吨" );
}
}
package project4;
public class Jinlong extends Car {
public int num = 4;
public String name = "金龙";
public int rent = 800;
public int manned = 20;
@Override
public void price() {
// TODO Auto-generated method stub
System.out.println( +num+". "+name+" "+rent+"/天 载人:" +manned + "人" );
}
}
package project4;
public class Songhuajiang extends Car {
public int num = 5;
public String name = "松花江";
public int rent = 400;
public float cargo = 4.0f;
@Override
public void price() {
// TODO Auto-generated method stub
System.out.println( +num+". "+name+" "+rent+"/天 载货:" +cargo + "吨" );
}
}
package project4;
public class Yiweike extends Car {
public int num = 6;
public String name = "依维柯";
public int rent = 1000;
public float cargo = 20.0f;
@Override
public void price() {
// TODO Auto-generated method stub
System.out.println( +num+". "+name+" "+rent+"/天 载货:" +cargo + "吨" );
}
}
package project4;
import java.util.Scanner;
public class Initclass {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("欢迎使用达达租车系统");
System.out.println("您是否要租车：1是 0否");
Scanner input = new Scanner(System.in);//键盘输入
int a = input.nextInt();
if(a==0)
{
System.out.println("谢谢您的光临");
}
else if(a==1)
{
System.out.println("您可租车的类型及其价目表：");
System.out.println("序号 汽车名称 租金 容量");
Aodi car1 = new Aodi();
car1.price();
Mazida car2 = new Mazida();
car2.price();
Pikaxue car3 = new Pikaxue();
car3.price();
Jinlong car4 = new Jinlong();
car4.price();
Songhuajiang car5 = new Songhuajiang();
car5.price();
Yiweike car6 = new Yiweike();
car6.price();
System.out.println("请输入您要租汽车的数量");
int n = input.nextInt();
int[] numbers = new int[100];//建立数组保存汽车序号
for(int i=1;i<=n;i++)//循环输入客户所选汽车序号
{
System.out.println("请输入第"+i+"辆车的序号");
int numb = input.nextInt();
if(numb<0||numb>6)
{
System.out.println("输入序号错误");
break;
}
numbers[i] = numb;
}
System.out.println("请输入租车天数");
int day = input.nextInt();
System.out.println("您的账单：");
System.out.println("***可载人的车有：");
int j;
int ma=0;
int money=0;
for(j=1;j<=n;j++)
{
if(numbers[j] == car1.num)
{
ma = ma + car1.manned;
System.out.print(car1.name);
money = money +car1.rent * day;
}
if(numbers[j] == car2.num)
{
ma = ma + car2.manned;
System.out.print(car2.name);
money = money +car2.rent * day;
}
if(numbers[j] == car3.num)
{
ma = ma + car3.manned;
System.out.print(car3.name);
money = money +car3.rent * day;
}
if(numbers[j] == car4.num)
{
ma = ma + car4.manned;
System.out.print(car4.name);
money = money +car4.rent * day;
}
System.out.print(" ");
}
System.out.println("共载人："+ ma +"人");
System.out.println("***载货的车有：");
int k;
float weight=0;
for(k=1;k<=n;k++)
{
if(numbers[k] == car3.num)
{
weight = weight + car3.cargo;
System.out.print(car3.name);
}
if(numbers[k] == car5.num)
{
weight = weight + car5.cargo;
System.out.print(car5.name);
money = money + car5.rent * day;
}
if(numbers[k] == car6.num)
{
weight = weight + car6.cargo;
System.out.print(car6.name);
money = money + car6.rent * day;
}
System.out.print(" ");
}
System.out.println("共载货："+weight);
System.out.println("***租车总价值："+ money + "元");
}
System.out.println("欢迎您的下次光临");
}
}
4回答
-
- qq__jpqACL
- 2018-08-05 15:41:04
import java.util.Scanner;
class Car
{
private String name;//名称
private int rent;//金额
private int manned;//载人
private int cargo;//载客
public void setName(String name)
{ this.name= name;}
public String getName()
{ return name;}public void setRent(int rent)
{ this. rent= rent;}
public int getRent()
{ return rent;}public void setManned(int manned)
{ this. manned= manned;}
public int getManned()
{ return manned;}public void setCargo(int cargo)
{ this. cargo= cargo;}
public int getCargo()
{ return cargo;}
void show(){}
}
class PassengerCar extends Car//载人车
{
PassengerCar(String name,int rent,int manned)
{
this.setName(name);
this.setRent(rent);
this.setManned(manned);
}
public void show()//载人车的输出信息
{
System.out.println(getName()+"\t\t"+getRent()+"元/天\t载人"+getManned()+"人");
}}
class Pickup extends Car//载人载货车
{
Pickup(String name,int rent,int manned,int cargo)
{
this.setName(name);
this.setRent(rent);
this.setManned(manned);
this.setCargo(cargo);
}
public void show()//载人载货车的输出信息
{
System.out.println(getName()+"\t\t"+getRent()+"元/天\t载人"+getManned()+"人 载货："+getCargo()+"吨");
}}
class Truck extends Car//载货车
{
Truck(String name,int rent,int cargo)
{
this.setName(name);
this.setRent(rent);
this.setCargo(cargo);
}
public void show()//载货车的输出信息
{
System.out.println(getName()+"\t\t"+getRent()+"元/天\t载货："+getCargo()+"吨");
}}
class RentCarsTest3
{
public static void main(String[] args)
{
Car[] car={new PassengerCar("奥迪4",500,4),new PassengerCar("马自达6",400,4),
new Pickup("皮卡雪6",450,4,2),new PassengerCar("金龙",800,20),
new Truck("松花江",400,4),new Truck("依维河",1000,20)};//创建对象数组，并初始化
entering(car);
carRental(car);
}
public static void vehicle(Car[] car)//打印车辆信息
{
System.out.println("\n序号\t汽车名称\t租金\t\t容量");
for (int x=0;x<car.length ;x++ )
{
System.out.print(x+1+".\t");
car[x].show();
}
}
public static void entering(Car[] car)//判断是否租车
{
int x=0;
System.out.println("欢迎使用哒哒租车系统：\n您是否要租车：1、是 0否");
do
{
Scanner p=new Scanner(System.in);
int entering=p.nextInt();
if (entering==1)
{
vehicle(car);
break;
}
else if (entering!=0)
{
System.out.println("您的输入有误!请重新输入：\n您是否要租车：1、是 0否");
x=1;
}
else
{ System.out.println("谢谢您的使用");
System.exit(0);
}
}while (x==1);
}public static void carRental(Car[] car)//租车情况
{
int rentnum=0,mannednum=0,cargonum=0;//总价格，载人数，载客数
Scanner b=new Scanner(System.in);
System.out.println("请输入要租汽车的数量：");
int number=b.nextInt();//车辆数量
int[] sequence=new int[number];//车辆序号数组
for (int x=0;x<number ;x++ )
{
int y=x+1;
System.out.println("请输入要租的第"+y+"辆车的序号");
Scanner c=new Scanner(System.in);
sequence[x]=c.nextInt();//存储用户输入的序号
}
System.out.println("请输入要租汽车的天数：");
int day=b.nextInt();//天数
//打印账单
System.out.println("您的账单：\n***可载人的车有：");
for (int x=0;x<number;x++ )
{
if (car[sequence[x]-1] instanceof PassengerCar||car[sequence[x]-1] instanceof Pickup)//判断 car[sequence[x]-1] 是不是PassengerCar类型，或者是不是Pickup类型
{
System.out.print(car[sequence[x]-1].getName()+"\t");
mannednum+=car[sequence[x]-1].getManned();
}
}
System.out.println("总载人："+mannednum+"人\n***可载货的车有：");
for (int x=0;x<number;x++ )
{
if (car[sequence[x]-1] instanceof Truck||car[sequence[x]-1] instanceof Pickup)
{
System.out.print(car[sequence[x]-1].getName()+"\t");
cargonum+=car[sequence[x]-1].getCargo();
}
rentnum+=car[sequence[x]-1].getRent();
}
rentnum=rentnum*day;
System.out.println("总载货："+cargonum+"吨\n***租车总价格："+rentnum);
}
} -
- qq_龙之子_1
- 2018-07-22 11:17:36
萌新不在是萌新了
-
- 小宋童鞋
- 2018-07-18 14:42:44
学的比我好多了。
-
- 小宋童鞋
- 2018-07-18 14:42:16
思路很清晰。
Java入门第二季 升级版
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