Java 6-1租车系统尝试

打完代码后看了不少同学的例子，有人载人载货都设了子类，有的在Main中用switch，有的用挺多的变量，我个人喜欢简单点，在这没细分class，用了一些for来循环那堆数组，发过来给大家看看，可以聊聊~

类 Ademocar (最初想搞抽象类玩玩，结果好像用处不大。。。)

public class Ademocar {
    public String carname;
    public int carno;
    public int price;
    public int people;
    public int load;

    public Ademocar(int carno, String carname, int price, int people, int load){//建构方法
        this.carno = carno;
        this.carname = carname;
        this.price = price;
        this.people = people;
        this.load = load;
    }

    public String toString() {
        return carno+".  "+ carname +"\t" + price + " 元/天\t" + people + "人\t" + load + "吨";

    }
    public String check(String type){  //返回车名
        if(type=="h" && this.people>0){
            return this.carname + " ";
        }
        else if(type=="c" && this.load>0){
            return this.carname + " ";
        }
        return "";
    }
}

在这我没在数据保护上多整，有空的话可以设置set和get方法，更安全。

Main 方法

import java.util.Arrays;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    System.out.println("你是否要租车？");
    int get = scan.nextInt();
    if (get==1){
        Ademocar car1 = new Ademocar(1,"奥迪A4",500,4,0);
        Ademocar car2 = new Ademocar(2,"马自达6",400,4,0);
        Ademocar car3 = new Ademocar(3,"皮卡雪6",450,4,2);
        Ademocar car4 = new Ademocar(4,"金龙 ",800,20,0);
        Ademocar car5 = new Ademocar(5,"松花江",400,0,4);
        Ademocar car6 = new Ademocar(6,"依维柯",1000,0,20);
        Ademocar[] car = {car1,car2,car3,car4,car5,car6}; //装对象
        System.out.println("以下是所有车：");
        System.out.println("序号 汽车名称\t租金\t\t容量");//第一行
        for(int t=0;t<6;t++)
        System.out.println(car[t]);//显示所有车

        System.out.println("请选择租车数量：");
        get = scan.nextInt();
        int[] cars = new int[get];//定义数组装住车序号，以车数量为长度
        for(int i=1;i<=get;i++)
        {
            System.out.println("请选择第 "+i+" 辆车的序号：");
            cars[i-1] = scan.nextInt();//装序号
        }
        System.out.println("请选择使用天数：");
        int time1 = scan.nextInt();

        Arrays.sort(cars);
        System.out.println("载客的有：");
        int people = 0;//总人数
        for(int i=0;i<get;i++)
        {
            System.out.print(car[cars[i]-1].check("h"));
            people += car[cars[i]-1].people;
        }
        System.out.print("  总载客量："+ people);
        System.out.println();
        System.out.println("载重的有：");
        int load = 0;//总重
        for(int i=0;i<get;i++)
        {
            System.out.print(car[cars[i]-1].check("c"));
            load += car[cars[i]-1].load;
        }
        System.out.println("  总载重量："+ load);
        int money = 0;
        for(int i=0;i<get;i++)
            money+=car[cars[i]-1].price;
        money*=time1;
        System.out.println("总价钱："+money);

    }
    }
}

最初在想主方法中，如何去确定我要的对象时，迷茫了一阵。之后看了书中用class类来做数组就可以轻松for循环对象，才点醒了我。