房屋出租系统

package houserentapp;
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(已出租/未出租)
  public House(int id, String name, String phone, String address, int rent,      String state) {    super();    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;  }
  // 为了方标输出信息用，tostring 方法  @Override  public String toString() {    return id + "\t\t" + name + "\t\t" + phone + "\t\t" + address + "\t\t" + rent        + "\t\t" + state;  }
}

package houserentapp;
import java.util.Scanner;
/*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(已出租/未出租)
 1定义house数组存储house对象 *2响应houseview的调用 *3完成对房屋信息的各种操作(crud)  * */public class HoseService {  Scanner input = new Scanner(System.in);  private House[] houses;  private int housenums;// 记录当前有多少个房屋信息  private int idcountter = 0;
  public HoseService(int size) {    houses = new House[size];      }
  public boolean add(House newhouse) {    if (housenums == houses.length) {      System.out.println("数组已满，无法添加");
      return false;    }    houses[housenums++] = newhouse;    idcountter++;    newhouse.setId(idcountter);
    return true;  }
  // list方法，返回houses  public House[] list() {    return houses;  }
  public boolean del(int delid) {    int index = -1;    for (int i = 0; i < housenums; i++) {      if (delid == 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] = null;
    return true;
  }
  public House findid(int findid) {    for (int i = 0; i < housenums; i++) {      if (findid == houses[i].getId()) {        return houses[i];      }    }    return null;  }
}

package houserentapp;
import java.util.Scanner;
/* * 1.显示界面 2.接受用户输入 3.调用houseservice完成对房屋信息的操作*/public class HouseView {  private boolean loop = true;// 控制显示菜单  private String key = "";// 接受用户选择  Scanner input = new Scanner(System.in);  private HoseService houservice = new HoseService(10);// 设置数组大小为10
  // 显示主菜单  public void listHouses() {    System.out.println("==========房屋列表==========");    System.out.println("编号\t\t房主\t\t电话\t\t地址\t\t月租\t\t状态(已出租/未出租)");    House[] houses = houservice.list();    for (int i = 0; i < houses.length; i++) {      if (houses[i] == null) {        break;      }      System.out.println(houses[i].toString());    }    System.out.println("======房屋列表显示完毕======");  }
  public void addhouse() {    System.out.println("==========添加房屋==========");    System.out.println("姓名：");    String name = input.next();    System.out.println("电话：");    String phone = input.next();    System.out.println("地址：");    String address = input.next();    System.out.println("月租：");    int rent = input.nextInt();    System.out.println("状态：");    String state = input.next();    House newhouse = new House(0, name, phone, address, rent, state);    if (houservice.add(newhouse)) {      System.out.println("添加房屋成功");    } else {      System.out.println("添加房屋失败");    }  }
  public void delhouse() {    System.out.println("====删除房源====");    System.out.println("请输入要删除房源编号(-1退出)：");    int delid = input.nextInt();    if (delid == -1) {      System.out.println("放弃删除");      return;    }    System.out.println("请输入是否删除(y/n),小心删除");    String choice = input.next();    while (true) {      System.out.println("確定要退出嗎?(y/n)");      choice = input.next();      if (choice.equals("y") || choice.equals("n")) {        break;      }    }    if (choice.equals("y")) {      if (houservice.del(delid)) {        System.out.println("删除房源信息成功");      } else {        System.out.println("编号不存在");      }
    } else {      System.out.println("放弃删除房源信息");    }
  }
  public void findhouse() {    System.out.println("查找房源");    int findid = input.nextInt();    House house = houservice.findid(findid);    if (house != null) {      System.out.println(house);    } else {      System.out.println("查找的房源不存在");    }  }
  public void update() {    System.out.println("修改房源信息");    System.out.println("请输入要修改房源的编号(-1表示退出)");    int id = input.nextInt();    if (id == -1) {      System.out.println("放弃修改");      return;    }    House house = houservice.findid(id);    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 = input.next();    if (!"".equals(house)) {      house.setName(name);    }    System.out.print("电话(" + house.getPhone() + "):");    String phone = input.next();    if (!"".equals(house)) {      house.setPhone(phone);    }    System.out.print("地址(" + house.getAddress() + "):");    String address = input.next();    if (!"".equals(house)) {      house.setAddress(address);    }    System.out.print("租金(" + house.getRent() + "):");    int rent = input.nextInt();    if (!"".equals(rent)) {      house.setRent(rent);    }    System.out.print("状态(" + house.getState() + "):");    String state = input.next();    if (!"".equals(state)) {      house.setState(state);    }  }
  public void manmenu() {    do {      System.out          .println("\t\t\t\t\t==========房屋出租系统==========\t\t\t\t\t\t");      System.out.println("\t\t\t\t\t\t1.查找房源");      System.out.println("\t\t\t\t\t\t2.新增房源");      System.out.println("\t\t\t\t\t\t3.删除房源信息");      System.out.println("\t\t\t\t\t\t4.修改房源信息");      System.out.println("\t\t\t\t\t\t5.显示房源信息");      System.out.println("\t\t\t\t\t\t6.退        出");      key = input.next();      switch (key) {      case "1":        System.out.println("1.查找房源");        findhouse();        break;      case "2":        System.out.println("2.新增房源");        addhouse();        break;      case "3":        System.out.println("3.删除房源信息");        delhouse();        break;      case "4":        System.out.println("4.修改房源信息");        update();        break;      case "5":        System.out.println("5.显示房源信息");        listHouses();        break;      case "6":        System.out.println("6.退        出");        loop = false;        break;      default:        break;
      }    } while (loop);  }
}

package houserentapp;
public class Test {
  public static void main(String[] args) {    HouseView P = new HouseView();    P.manmenu();
  }
}