java客房管理小项目
这个客房管理小项目，适合java初学者练手。功能虽然不多，但是内容很齐全！
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共有5层，每层10间客房，以数字101--509标示；
具有入住，退房，搜索，退出四个简单功能；
public class Hotel {
static final int floor = 5;
static final int order = 10;
private static int countFloor;
private static int countOrder;
private static String[][] rooms = new String[floor][order];
//main函数代表酒店的基本功能，入住，退房，查询，其他；
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
String temp = null;
while(true){
//提醒用户选择输入
System.out.println("请选择输入 in out search quit : ");
temp = scan.next();
int room = 0;
if("in".equals(temp)){
while(true){
System.out.println("请输入房间号：");
room = scan.nextInt();
if(isRightRoom(room,1)){
break;
}
}
System.out.println("请输入名字:");
String name = scan.next();
if(in(room,name)){
System.out.println("恭喜您，入住成功");
System.out.println(room + " : "+name);
}
}else if("out".equals(temp)){
while(true){
System.out.println("请输入房间号：");
room = scan.nextInt();
if(isRightRoom(room,0)){
break;
}
}
if(out(room)){
System.out.println("退房成功，欢迎下次光临");
}
}else if("search".equals(temp)){
System.out.println("请输入查询的房间号(-1表示全部)");
room = scan.nextInt();
search(room);
}else if("quit".equals(temp)){
break;
}else{
System.out.println("您的输入有误，请再次输入！");
}
}
}
//flag:1 检查房间号输入正确 且 无人入住 0 仅检查房间号输入正确
private static boolean isRightRoom(int room,int flag) {
//校验房间号是否输入有误
countFloor = room / 100 - 1;
countOrder = room % 100 - 1;
if(countFloor < 0 || countFloor >= floor || countOrder < 0 || countOrder >= order ){
System.out.println("输入的房间号有误");
return false;
}
if(flag == 1){
if(rooms[countFloor][countOrder] != null){
System.out.println("房间已经入住");
return false;
}
}
return true;
}
//旅馆入住功能实现，in(room,name) countFloor:计算出的楼层 countOrder:计算出的房间顺序
private static boolean in(int room,String name){
rooms[countFloor][countOrder] = name;
return true;
}
//旅馆退房功能实现,out(room),
private static boolean out(int room){
//校验房间号是否有人入住
if(rooms[countFloor][countOrder] == null){
System.out.println("房间未曾入住，退房有误");
return false;
}
rooms[countFloor][countOrder] = null;
return true;
}
//旅馆搜索功能，search(room)
private static void search(int room){
if(room == -1){
int roomNum = 0;
for(int i=0;i<floor;i++){
for(int j=0;j<order;j++){
roomNum = (i + 1) * 100 + j + 1;
System.out.println(roomNum + "->" +
(rooms[i][j] == null ? "empty" : rooms[i][j]));
}
}
}else{
//校验房间号是否正确
if(!isRightRoom(room,0)){
System.out.println("抱歉，房间输入错误！");
}else{
System.out.println(rooms[countFloor][countOrder]);
}
}
}}