Java实现房屋出租系统详解
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2022-06-25 10:48:25
目录houseviewhouse_sevicehouseapphouseviewpackage house.view;import house.model.house;import house.sev...
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"); } }
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