How to do the data statistics module of hotel management system? Great god asks for advice (java)

Import? Java . util . scanner；

Public? Class? a 1{

Public? Static electricity Invalid? main(String[]？ args){

Scanner? s？ =? New? Scanner (system. in); //Accept the customer's keyboard input. At the command line, enter is over.

System.out.println(？ Hotel Management System? );

Hotel? h？ =? New? Hotel ();

System.out.println(？ h？ );

h . print()；

What time? (Correct) {

System.out.println(？ Please enter the room number. );

//Declare a variable to accept data input from the console.

String? No? =? s . next()；

//Book a room

Order (None);

h . print()；

}

}

}

Class? Room {

//room number

Private? String? No;

//Room type

Private? String? Type;

//Hello?

Private? Bull? isUse

Public? Room(){// Default call

super()；

}

Public? Room (string? No, string? Type, Boolean? isUse){

super()；

Don't you have this? =? No;

This type? =? Type;

This. Can I use it? =? isUse

}

Public? String? getNo(){

Return? No;

}

Public? Invalid? SetNo (string? No) {

Don't you have this? =? No;

}

Public? String? getType(){

Return? Type;

}

Public? Invalid? SetType (string? Type) {

This type? =? Type;

}

Public? Bull? isUse(){

Return? isUse

}

Public? Invalid? SetUse (Boolean? isUse){

This. Can I use it? =? isUse

}

Public? String? toString(){？ //Declare the output result format

Return? "["? +? No? +? ","? +? Type? +? ","? +? (isUse？ "occupied": "idle"? +? "]";

}

}

Class? Hotel {

Room? Room [] [];

Public? Hotel () {

Room? =? New? Room [5] [4]; //The hotel has five floors with four rooms on each floor.

for(int？ I = 0； ? Me? & lt？ Room. Length; ? ++i){// The external for loop is the loop layer, and the memory loop is the room that loops each layer.

for(int？ j = 0； ? j？ & lt？ Room [i] Length; ? ++j){

What if? (me? ==? 0? ||? Me? ==? 1)? {

//Add an empty string after its automatic data type conversion, so that the previous number will automatically become a numeric string;

Room [i][j]? =? New? Room ((I+1) *100+j+1? +""? ,? "standard room", false);

}

What if? (me? ==? 2? ||? Me? ==? 3)? {

Room [i][j]? =? New? Room ((I+1) *100+j+1? +""? ,? "Double room", false); ?

}

What if? (me? ==? 4)? {

Room [i][j]? =? New? Room ((I+1) *100+j+1? +""? ,? "Deluxe room", fake); ?

}

}

}

}

//Print the room list for external use.

Public? Invalid? print(){

for(int？ I = 0； ? Me? & lt？ Room. Length; ? ++i){

for(int？ j = 0； ? j？ & lt？ Room [i] Length; ? ++j){

System.out.print(？ Room [i][j]? +? "?" ? );

}

//newline

System.out.println(？ );

}

}

//Provide the way for the hotel to make external reservations.

Public? Invalid? Order (string? No) {

for(int？ I = 0； ? Me? & lt？ Room. Length; ? ++i){

for(int？ j = 0； ? j？ & lt？ Room [i] Length; ? ++j){

What if? (conference room [i][j]. getNo()。 Equal to (no))? {

//Encapsulates the member data of the object and accesses it through the member method.

// 1? Access mode of member variable room [i][j]. No;

//2? How to access member methods

Room [i][j] SetUse (true);

Return;

}

}

}

}

} use the database.