1、简单的房屋出租系统

项目-房屋出租系统

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1、项目需求说明

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2、界面

2.1、项目界面 - 主菜单

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2.2、项目界面 - 新增房源

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2.3、项目界面 - 查找房源

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2.4、项目界面 - 删除房源

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2.5、项目界面 - 修改房源

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2.6、项目界面 - 房屋列表

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2.7、项目界面 - 退出系统

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3、设计

3.1、项目设计 - 程序框架图(分层模式=>当软件比较复杂, 需要模式管理)

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4、实现

4.1、准备工具类Utility, 提高开发效率

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4.2、项目功能实现 - 完成House类

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package com.cc.houserenttest.domain;

public class House {
    private int id;         //编号
    private String name;    //房主
    private String phone;   //电话
    private String address; //地址
    private int rent;       //月租
    private String state;   //状态

    //打印房屋信息
    public void printHouse() {
        System.out.println("编号\t房主\t电话\t地址\t月租\t状态(未出租/已出租)\n" +
                        id + "\t\t" + name + "\t" + phone + "\t\t" + address
                           + "\t" + rent + "\t" + state);
    }

    public House(int id, String name, String phone, String address, int rent, String state) {
        this.id = id;
        this.name = name;
        this.phone = phone;
        this.address = address;
        this.rent = rent;
        this.state = state;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getRent() {
        return rent;
    }

    public void setRent(int rent) {
        this.rent = rent;
    }

    public String getState() {
        return state;
    }

    public void setState(String state) {
        this.state = state;
    }
}

package com.cc.houserenttest;

import com.cc.houserenttest.domain.House;

public class HouseRentApp {
    public static void main(String[] args) {
        House house = new House(2, "none", "116", "昌平区", 5000, "已出租");
        house.printHouse();
    }
}

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4.3、项目功能实现 - 显示主菜单和完成退出软件功能

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package com.cc.houserenttest.houseview;

import java.util.Scanner;

public class HouseView {
    Scanner sc = new Scanner(System.in);
    String choose = "";
    boolean flag = true;

    //显示主菜单
    public void mainMenu() {
        do {
            System.out.println("\n---------------房屋出租系统---------------");
            System.out.println("\t\t\t1 新 增 房 源");
            System.out.println("\t\t\t2 查 找 房 屋");
            System.out.println("\t\t\t3 删 除 房 屋");
            System.out.println("\t\t\t4 修 改 房 屋 信 息");
            System.out.println("\t\t\t5 房 屋 列 表");
            System.out.println("\t\t\t6 退       出");
            System.out.print("请选择(1-6): ");
            choose = sc.next();
            switch (choose) {
                case "1" :
                    System.out.println("新增");
                    break;
                case "2" :
                    System.out.println("查找");
                    break;
                case "3" :
                    System.out.println("删除");
                    break;
                case "4" :
                    System.out.println("修改");
                    break;
                case "5" :
                    System.out.println("列表");
                    break;
                case "6" :
                    System.out.println("退出");
                    flag = false;
                    break;
                default :
                    System.out.println("范围为1-6, 请重新输入");
            }
        } while (flag);
    }
}

package com.cc.houserenttest;

import com.cc.houserenttest.domain.House;
import com.cc.houserenttest.houseview.HouseView;

public class HouseRentApp {
    public static void main(String[] args) {
        /*House house = new House(2, "none", "116", "昌平区", 5000, "已出租");
        house.printHouse();*/
        HouseView houseView = new HouseView();
        houseView.mainMenu();
    }
}

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4.4、项目功能实现 - 完成显示房屋列表的功能

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4.5、项目功能实现 - 添加房屋信息的功能

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4.6、项目功能实现 - 完成删除房屋信息的功能

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4.7、项目功能实现 - 完善退出确认功能

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4.8、项目功能实现 - 完成根据id查找房屋信息的功能

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4.9、项目功能实现 - 完成修改房屋信息的功能

4.10、项目效果展示

**代码: **

数据层

package com.cc.houserent.domain;

public class House {
    private int id;         //编号
    private String name;    //房主
    private String phone;   //电话
    private String address; //地址
    private int rent;       //月租
    private String state;   //状态

    //打印房屋信息
    public void printHouse() {
        System.out.println(id + "\t\t" + name + "\t" + phone + "\t\t" + address
                + "\t" + rent + "\t" + state);
    }

    public House(int id, String name, String phone, String address, int rent, String state) {
        this.id = id;
        this.name = name;
        this.phone = phone;
        this.address = address;
        this.rent = rent;
        this.state = state;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getRent() {
        return rent;
    }

    public void setRent(int rent) {
        this.rent = rent;
    }

    public String getState() {
        return state;
    }

    public void setState(String state) {
        this.state = state;
    }
}

业务层

package com.cc.houserent.houseservice;

import com.cc.houserent.domain.House;

public class HouseService {
    private House[] houses;
    private int houseNums;  //房屋个数, 默认为0
    private int idCount;    //id

    public HouseService(int size) {
        houses = new House[size];
    }

    //返回房屋信息的方法
    public House[] list() {
        return houses;
    }

    //返回增加房屋信息的方法
    public boolean add(House newHouse) {
        for (int i = 0; i < houseNums; i++) {
            if (houses.length == houseNums) {
                return false;
            }
        }
        houses[houseNums] = newHouse;
        houseNums++;
        idCount++;
        newHouse.setId(idCount);
        return true;
    }

    //返回删除房屋信息的方法
    int index = -1;
    public boolean del(int deleteId) {
        for (int i = 0; i < houseNums; i++) {
            if (deleteId == houses[i].getId()) {
                index = i;
            }
        }
        if (index == -1) {
            return false;
        }
        for (int i = index; i < houseNums - 1; i++) {
            houses[i] = houses[i + 1];
        }
        houses[houseNums - 1] = null;
        houseNums--;
        return true;
    }

    //返回查找房屋信息的方法
    public House find(int findId) {
        for (int i = 0; i < houseNums; i++) {
            if (findId == houses[i].getId()) {
                return houses[i];
            }
        }
        return null;
    }
}

界面层

package com.cc.houserent.houseview;

import com.cc.houserent.domain.House;
import com.cc.houserent.houseservice.HouseService;

import java.util.Scanner;

public class HouseView {
    Scanner sc = new Scanner(System.in);
    String choose = "";
    boolean flag = true;
    HouseService hs = new HouseService(2);

    //显示主菜单
    public void mainMenu() {
        do {
            System.out.println("\n---------------房屋出租系统---------------");
            System.out.println("\t\t\t1 新 增 房 源");
            System.out.println("\t\t\t2 查 找 房 屋");
            System.out.println("\t\t\t3 删 除 房 屋");
            System.out.println("\t\t\t4 修 改 房 屋 信 息");
            System.out.println("\t\t\t5 房 屋 列 表");
            System.out.println("\t\t\t6 退       出");
            System.out.print("请选择(1-6): ");
            choose = sc.next();
            switch (choose) {
                case "1":
                    addHouse();
                    break;
                case "2":
                    findById();
                    break;
                case "3":
                    deleteHouse();
                    break;
                case "4":
                    updateHouse();
                    break;
                case "5":
                    listHouse();
                    break;
                case "6":
                    exit();
                    break;
                default:
                    System.out.println("范围为1-6, 请重新输入");
            }
        } while (flag) ;
    }

    //房屋列表
    public void listHouse() {
        System.out.println("---------------房屋列表---------------");
        System.out.println("编号\t房主\t电话\t地址\t月租\t状态(未出租/已出租)");
        House[] list = hs.list();
        for (int i = 0; i < list.length; i++) {
            if (list[i] == null) {
                break;
            }
            list[i].printHouse();
        }
        System.out.println("---------------房屋列表完成---------------");
    }

    //新增房源
    public void addHouse() {
        System.out.println("---------------添加房屋---------------");
        System.out.print("姓名: ");
        String name = sc.next();
        System.out.print("电话: ");
        String phone = sc.next();
        System.out.print("地址: ");
        String address = sc.next();
        System.out.print("月租: ");
        int rent = sc.nextInt();
        System.out.print("状态(未出租/已出租): ");
        String state = sc.next();
        //把添加的信息放在新数组里
        House newHouse = new House(0, name, phone, address, rent, state);
        if (hs.add(newHouse)) {
            System.out.println("---------------添加完成---------------");
        } else {
            System.out.println("---------------房屋列表已存满, 不能增加---------------");
        }
    }

    //删除房屋
    public void deleteHouse() {
        System.out.println("---------------删除房屋---------------");
        System.out.print("请选择待删除房屋编号(-1)退出: ");
        int delId = sc.nextInt();
        if (delId == -1) {
            System.out.println("---------------退出删除房屋---------------");
            return;
        }
        System.out.println("确认是否删除(Y/N): 请小心选择: ");
        System.out.println("请输入你的选择(Y/N): ");
        choose = sc.next();
        if (choose.equals("Y")) {
            if (hs.del(delId)) {
                System.out.println("---------------删除完成---------------");
            } else {
                System.out.println("---------------没有该房屋编号---------------");
            }
        } else if (choose.equals("N")) {
            System.out.println("---------------退出删除房屋---------------");
            return;
        } else {
            System.out.println("---------------输入错误---------------");
        }
    }

    //退出系统
    public void exit() {
        while (true) {
            System.out.println("请输入你的选择(Y/N): ");
            choose = sc.next();
            if (!choose.equals("Y") && !choose.equals("N")) {
                System.out.println("选择错误, 请重新输入: ");
            }
            if (choose.equals("Y")) {
                System.out.println("你退出了程序");
                flag = false;
                break;
            }
            if (choose.equals("N")) {
                System.out.println("退出程序失败");
                break;
            }
        }
    }

    //查找房屋信息
    public void findById() {
        System.out.println("---------------查找房屋---------------");
        System.out.print("请输入你要查找的id: ");
        int findId = sc.nextInt();
        House house = hs.find(findId);
        if (house != null) {
            house.printHouse();
            return;
        }
        System.out.println("---------------房屋列表没有此编号房屋---------------");
    }

    //修改房源
    public void updateHouse() {
        System.out.println("---------------修改房屋信息---------------");
        System.out.print("请选择待修改房屋编号(-1退出): ");
        int updateId = sc.nextInt();
        if (updateId == -1) {
            System.out.println("---------------退出修改房屋信息---------------");
            return;
        }
        House house = hs.find(updateId);
        if (house == null) {
            System.out.println("---------------修改房屋信息不存在---------------");
            return;
        }
        System.out.print("姓名(" + house.getName() + "): ");
        String name = sc.next();
        house.setName(name);
        System.out.print("电话(" + house.getPhone() + "): ");
        String phone = sc.next();
        house.setPhone(phone);
        System.out.print("地址(" + house.getAddress() + "): ");
        String address = sc.next();
        house.setAddress(address);
        System.out.print("租金(" + house.getRent() + "): ");
        int rent = sc.nextInt();
        house.setRent(rent);
        System.out.print("状态(" + house.getState() + "): ");
        String state = sc.next();
        house.setState(state);
        System.out.println("---------------修改完成---------------");
    }
}

测试层

package com.cc.houserent;

import com.cc.houserent.houseview.HouseView;

public class HouseRentApp {
    public static void main(String[] args) {
        HouseView houseView = new HouseView();
        houseView.mainMenu();
    }
}

效果图:

新增房源

当前房屋列表为空, 最大可以存放两个房屋列表, 所有可以添加

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当添加king的时候, 前面已经添加了两个房屋信息了, 所以不能在添加

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显示当前房屋列表信息

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查找房屋

当前房屋列表只要id为1和2的信息, 当输入其它的会显示没有此编号

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当查找id为1或者2的信息时, 则会返回相对应的信息

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删除房屋

当输入-1的时候, 就可以退出删除房屋

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删除房屋操作前, 会提醒是否确定删除房屋, 如果输入N, 则退出删除房屋

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删除房屋操作前, 会提醒是否确定删除房屋, 如果输入Y, 则删除房屋

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当输入的删除房屋编号没有时, 则提示没有该房屋编号

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修改房屋信息

当输入的修改房屋信息编号不存在时, 则会提示修改房屋信息不存在

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当修改房屋信息编号存在时, 则继续下一步

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退出系统

当输入的不是Y或者N时, 会提示你重新输入, 直到输入Y或者N为止

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输入的是Y则退出程序

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posted @ 2021-07-25 00:14  多瑞C  阅读(242)  评论(0)    收藏  举报