Java實現房屋出租系統詳解
houseView
package house.view;
import house.model.House;
import house.sevice.house_Sevice;
import house.tool.Utility;
import java.util.Scanner;
/**
* 1 顯示界面
* 2 接收用戶的輸入
* 3 調用houseService完成對房屋信息的各種輸人
*/
public class houseView {
private boolean loop=true;
private char key=' ';
//編寫addhouse()，接收輸入，創建addhouse對象，調用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("電話:");
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("狀態:");
String state=Utility.readString(3);
//註意id是系統分配的
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("添加房屋失敗");
}
}
//查找房屋
public void find(){
System.out.println("---------查找房屋-------");
System.out.print("請輸入要查找的房屋編號:");
int f=Utility.readInt();
if(house_sevice.Find(f)==null){
System.out.println("沒有找到該房屋的信息");
}else {
System.out.println("編號 房主 \t電話 \t地址 \t月租 \t狀態(出租/未出租)\n"+house_sevice.Find(f));
}
}
//編寫delhosue方法，接收輸入的id，調用service的del方法
public void delhouse(){
System.out.println("---------刪除房屋-------");
System.out.print("請輸入要刪除的房屋編號(-1退出):");
int delid=Utility.readInt();
if(delid==-1){
System.out.println("---------退出刪除-------");
return;
}
char c=Utility.readConfirmSelection();//調用該方法，一直循環直到用戶輸入y或n
if(c=='Y'){
if(house_sevice.del(delid)){
System.out.println("---------刪除成功-------");
}else {
System.out.println("---------刪除失敗-------");
}
}else {
System.out.println("---------退出刪除-------");
return;
}
}
//修改房屋信息
public void update(){
System.out.println("---------修改房屋信息-------");
System.out.print("請輸入要修改的房屋編號(-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-------");
}
//顯示房屋列表
private house_Sevice house_sevice=new house_Sevice(10);//設置數組大小為10
public void listHouse(){
System.out.println("---------房屋出租列表-------");
System.out.println("編號 房主 \t電話 \t地址 \t月租 \t狀態(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]);
}
}
//主菜單
public void main_menu(){
do{
System.out.println("---------房屋出租系統-------");
System.out.println("\t\t1 新 增 房 源");
System.out.println("\t\t2 查 找 房 屋");
System.out.println("\t\t3 刪 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("請輸入你的選擇:");
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("輸入錯誤!");
}
}while (loop);
}
}
house_Sevice
package house.sevice;
import house.model.House;
import house.tool.Utility;
/**
* house_Sevice.java<=> 類 [業務層]
* //定義house[],保存house對象
* 1 響應houseView的調用
* 2 完成對房屋信息的各種操作(增刪改查)
*/
public class house_Sevice {
private House[] houses;//保存house對象
private int nums=3;//記錄數組內的房屋個數
private int count=3;//id
//初始化房屋列表
public house_Sevice(int size){//傳入數組大小
houses=new House[size];
houses[0]=new House(1,"Morty",1020,"紐約",111,"未出租");
houses[1]=new House(2,"萊月昴",1021,"東京",222,"未出租");
houses[2]=new House(3,"李星雲",1022,"洛陽",333,"未出租");
}
public House[] list(){
return houses;//因為重寫瞭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自增長機制，更新newhouse的id
return true;
}
}
//刪除房屋
public boolean del(int Id){
//找到要刪除房屋信息元素對應的下標
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];//將該位置之後的元素前移覆蓋
}
houses[--nums]=null;//將數組長度減一並將最後一個元素置空
return true;
}
//查找房屋
public House Find(int id){
//找到要查找房屋信息元素對應的下標
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("該房屋不存在");
}else {
System.out.print("姓名:("+house.getName()+"):");
String name= Utility.readString(8,"");//用戶如果直接回車代表不修改，默認值為""
if(!name.equals("")){
house.setName(name);//將用戶輸入的name覆蓋原來的name
}
System.out.print("手機號:("+house.getPhone()+"):");
int phone=Utility.readInt(0);//用戶如果直接回車代表不修改,默認值為0
if(!(phone==0)){
house.setPhone(phone);//將用戶輸入的name覆蓋原來的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("狀態:("+house.getState()+"):");
String state=Utility.readString(8,"");
if(!state.equals("")){
house.setState(state);//
}
}
}
}
House
package house.model;
/**
* house類的對象表示一個房屋的信息
*/
public class House {
//編號 房主 電話 地址 月租 狀態(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) {
//創建View對象，並顯示主菜單，是整個程序的入口
new houseView().main_menu();//創建一個虛擬對象調用顯示主菜單的方法
System.out.println("程序已退出");
}
}
總結
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