Java实现房屋出租系统详解
目录
- houseView
- house_Sevice
- House
- App
- 总结
houseView
package house.view;
import house.model.House;
import house.sevice.house_Sevice;
import house.tool.Utility;
import java.util.Scanner;
/**
* 1 显示界面
* 2 接收用户的输入
* 3 调用houseService完成对房屋信息的各种输人
*/
public class houseView {
private boolean loop=true;
private char key=' ';
//编写addhouse()，接收输入，创建addhouse对象，调用add方法
public void addhouse(){
System.out.println("---------添加房屋-------");
System.out.print("姓名:");
String name=Utility.readString(6);
System.out.print("电话:");
int phone=Utility.readInt(12);
System.out.print("地址:");
String address=Utility.readString(14);
System.out.print("月租:");
int rent=Utility.readInt();
System.out.print("状态:");
String state=Utility.readString(3);
//注意id是系统分配的
House newhouse=new House(0,name,phone,address,rent,state);
if(house_sevice.add(newhouse)){
System.out.println("添加房屋成功");
}else {
System.out.println("添加房屋失败");
}
}
//查找房屋
public void find(){
System.out.println("---------查找房屋-------");
System.out.print("请输入要查找的房屋编号:");
int f=Utility.readInt();
if(house_sevice.Find(f)==null){
System.out.println("没有找到该房屋的信息");
}else {
System.out.println("编号 房主 \t电话 \t地址 \t月租 \t状态(出租/未出租)\n"+house_sevice.Find(f));
}
}
//编写delhosue方法，接收输入的id，调用service的del方法
public void delhouse(){
System.out.println("---------删除房屋-------");
System.out.print("请输入要删除的房屋编号(-1退出):");
int delid=Utility.readInt();
if(delid==-1){
System.out.println("---------退出删除-------");
return;
}
char c=Utility.readConfirmSelection();//调用该方法，一直循环直到用户输入y或n
if(c=='Y'){
if(house_sevice.del(delid)){
System.out.println("---------删除成功-------");
}else {
System.out.println("---------删除失败-------");
}
}else {
System.out.println("---------退出删除-------");
return;
}
}
//修改房屋信息
public void update(){
System.out.println("---------修改房屋信息-------");
System.out.print("请输入要修改的房屋编号(-1退出):");
int up=Utility.readInt();
if(up==-1){
System.out.println("---------退出修改-------");
return;
}
house_sevice.updata(up);
System.out.println("---------修改成功-------");
}
//显示房屋列表
private house_Sevice house_sevice=new house_Sevice(10);//设置数组大小为10
public void listHouse(){
System.out.println("---------房屋出租列表-------");
System.out.println("编号 房主 \t电话 \t地址 \t月租 \t状态(出租/未出租)");
House[] houses=house_sevice.list();//得到所有房屋的信息
for (int i = 0; i < houses.length; i++) {
if(houses[i]==null){
break;
}
System.out.println(houses[i]);
}
}
//主菜单
public void main_menu(){
do{
System.out.println("---------房屋出租系统-------");
System.out.println("\t\t1 新 增 房 源");
System.out.println("\t\t2 查 找 房 屋");
System.out.println("\t\t3 删 除 房 屋");
System.out.println("\t\t4 修 改 房 屋 信 息");
System.out.println("\t\t5 房 屋 列 表");
System.out.println("\t\t6 退 出");
System.out.print("请输入你的选择:");
key= Utility.readChar();
switch (key){
case '1':
addhouse();
break;
case '2':
find();
break;
case '3':
delhouse();
break;
case '4':
update();
break;
case '5':
listHouse();
break;
case '6':
char n=Utility.readConfirmSelection();
if(n=='Y'){
loop=false;
}
break;
default:
System.out.println("输入错误!");
}
}while (loop);
}
}
house_Sevice
package house.sevice;
import house.model.House;
import house.tool.Utility;
/**
* house_Sevice.java<=> 类 [业务层]
* //定义house[],保存house对象
* 1 响应houseView的调用
* 2 完成对房屋信息的各种操作(增删改查)
*/
public class house_Sevice {
private House[] houses;//保存house对象
private int nums=3;//记录数组内的房屋个数
private int count=3;//id
//初始化房屋列表
public house_Sevice(int size){//传入数组大小
houses=new House[size];
houses[0]=new House(1,"Morty",1020,"纽约",111,"未出租");
houses[1]=new House(2,"莱月昴",1021,"东京",222,"未出租");
houses[2]=new House(3,"李星云",1022,"洛阳",333,"未出租");
}
public House[] list(){
return houses;//因为重写了tostring
}
//添加房屋信息
public boolean add(House newhouse){
if(nums==houses.length){
return false;
}else {
houses[nums++]=newhouse;
newhouse.setId(++count);//id自增长机制，更新newhouse的id
return true;
}
}
//删除房屋
public boolean del(int Id){
//找到要删除房屋信息元素对应的下标
int index=-1;
for (int i = 0; i < nums; i++) {
if(Id==houses[i].getId()){
index=i;
}
}
if(index==-1){
return false;
}
for (int i = index; i < houses.length-1; i++) {
houses[i]=houses[i+1];//将该位置之后的元素前移覆盖
}
houses[--nums]=null;//将数组长度减一并将最后一个元素置空
return true;
}
//查找房屋
public House Find(int id){
//找到要查找房屋信息元素对应的下标
for (int i = 0; i < nums; i++) {
if(id==houses[i].getId()){
return houses[i];
}
}
return null;
}
//修改房屋信息
public void updata(int up){
House house=Find(up);
if(house==null){
System.out.println("该房屋不存在");
}else {
System.out.print("姓名:("+house.getName()+"):");
String name= Utility.readString(8,"");//用户如果直接回车代表不修改，默认值为""
if(!name.equals("")){
house.setName(name);//将用户输入的name覆盖原来的name
}
System.out.print("手机号:("+house.getPhone()+"):");
int phone=Utility.readInt(0);//用户如果直接回车代表不修改,默认值为0
if(!(phone==0)){
house.setPhone(phone);//将用户输入的name覆盖原来的name
}
System.out.print("地址:("+house.getAddress()+"):");
String address=Utility.readString(8,"");
if(!address.equals("")){
house.setAddress(address);
}
System.out.print("月租:("+house.getRent()+"):");
int rent=Utility.readInt(0);
if(!(rent==0)){
house.setRent(rent);
}
System.out.print("状态:("+house.getState()+"):");
String state=Utility.readString(8,"");
if(!state.equals("")){
house.setState(state);//
}
}
}
}
House
package house.model;
/**
* house类的对象表示一个房屋的信息
*/
public class House {
//编号 房主 电话 地址 月租 状态(出租/未出租)
private int id;
private String name;
private int phone;
private String address;
private int rent;
private String state;
public House(int id, String name, int 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 int getPhone() {
return phone;
}
public void setPhone(int 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;
}
@Override
public String toString() {
return id
+"\t" +name
+"\t" +phone
+"\t" +address
+"\t\t"+rent
+"\t\t"+state;
}
}
App
package house.view;
import house.model.House;
public class App {
public static void main(String[] args) {
//创建View对象，并显示主菜单，是整个程序的入口
new houseView().main_menu();//创建一个虚拟对象调用显示主菜单的方法
System.out.println("程序已退出");
}
}
总结
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【文章出处:美国多ip服务器】