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"); } }
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