Shulou(Shulou.com)06/03 Report--

This article mainly introduces "java to achieve hotel management system code sharing". In the daily operation, I believe that many people have doubts about the realization of hotel management system code sharing in java. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts of "java to achieve hotel management system code sharing". Next, please follow the editor to study!

Entity class

There are three entity classes, each with its own properties and get,set methods. There is nothing to say.

Administrator entity class:

/ *

Administrator entity

, /

Package cn.edu.shengda

/ * *

*

* @ author Administrator

, /

Public class Admin {

Private String id; / / No.

Private String name; / / name

Private String password; / / password

Private String extend; / / permissions

Void setID (String id) {

This.id=id

}

Void setName (String name) {

This.name=name

}

Void setPassword (String password) {

This.password=password

}

Void setExtend (String extend) {

This.extend=extend

}

String getID () {

Return this.id

}

String getName () {

Return this.name

}

String getPassword () {

Return this.password

}

String getExtend () {

Return this.extend

}

}

Customer entity class:

/ *

Customer entity

, /

Package cn.edu.shengda

Import java.sql.Date

/ * *

*

* @ author Administrator

, /

Public class Customer {

Private int id; / / No.

Private String name; / / name

Private String card; / / ID card

Private int room; / / Room number

Private Float money; / / deposit

Private Date time; / / check-in time

Private String sex; / / gender

Private String hometown; / / place of origin

Int getId () {

Return this.id

}

String getName () {

Return this.name

}

String getCard () {

Return this.card

}

Int getRoom () {

Return this.room

}

Float getMoney () {

Return this.money

}

Date getTime () {

Return this.time

}

String getSex () {

Return this.sex

}

String getHometown () {

Return this.hometown

}

}

Guest room entity:

/ *

Guest room entity

, /

Package cn.edu.shengda

/ * *

*

* @ author Administrator

, /

Public class Room {

Private int id; / / No.

Private String grade; / / level

Private float price; / / Price

Private int state; / / statu

Private String remarks; / / remarks

Void setID (int ID) {

This.id = ID

}

Void setGrade (String grade) {

This.grade = grade

}

Void setPrice (float price) {

This.price = price

}

Void setState (int state) {

This.state = state

}

Void setRemarks (String remarks) {

This.remarks = remarks

}

Int getID () {

Return this.id

}

String getGrade () {

Return this.grade

}

Float getPrice () {

Return this.price

}

Int getState () {

Return this.state

}

String getRemarks () {

Return this.remarks

}

} graphical interface and logic implementation

Login interface:

Contains two text boxes, namely the user name and password

Two buttons, login and registration

Clicking on login will determine whether the user name and password are correct, and then prompt for different results

Registration page

Click register, which will jump to the registration page

There will also be a prompt after clicking to register.

Judge whether the registration conforms to the rules

Import java.sql.PreparedStatement

Import java.sql.SQLException

Import javax.swing.JOptionPane

Public class Register {

String name

String ID

String password

String confirmpassword

Void setName (String name) {

This.name = name

}

Void setID (String ID) {

This.ID = ID

}

Void setPassword (String password) {

This.password = password

}

Void setconfirmpasswd (String confirmpassword) {

This.confirmpassword = confirmpassword

}

Private PreparedStatement getPreparedStatement (String sql) throws SQLException {

Return new DBConnecter (). GetConnection (). PrepareStatement (sql)

}

/ / determine whether the registered account conforms to the rules

Boolean JudgeRegister () throws SQLException {

If (this.name.equals ("")) {

JOptionPane.showMessageDialog (null, "user name cannot be empty!" , "user name", JOptionPane.ERROR_MESSAGE)

Return false

}

If (this.ID.equals ("")) {

JOptionPane.showMessageDialog (null, "account cannot be empty!" , "account is empty", JOptionPane.ERROR_MESSAGE)

Return false

}

If (this.password.equals ("")) {

JOptionPane.showMessageDialog (null, "password cannot be empty!" , "password is empty", JOptionPane.ERROR_MESSAGE)

Return false

}

If (! this.password.equals (this.confirmpassword)) {

JOptionPane.showMessageDialog (null, "the passwords entered are inconsistent!", "passwords are inconsistent", JOptionPane.ERROR_MESSAGE)

Return false

}

AdminManager am = new AdminManager ()

If (am.JudgeAdminID (this.ID)) {

JOptionPane.showMessageDialog (null, "account already exists", "account already exists", JOptionPane.ERROR_MESSAGE)

Return false

}

/ / comply with the rules, pop up the window of successful registration, and add the account to the database

JOptionPane.showMessageDialog (null, "registered successfully")

AddAdmin ()

Return true

}

/ / add an Admin account to the database

Void addAdmin () throws SQLException {

String sql= "insert into admin (id, name, password) values"

PreparedStatement ps = getPreparedStatement (sql)

Ps.setString (1, this.ID)

Ps.setString (2, this.name)

Ps.setString (3, this.password)

Ps.executeUpdate ()

Ps.close ()

}

}

After the registration is successful, you can click to log in.

Main page:

Go to the main page after logging in successfully

In the table at the bottom of the main page, I first read out the room data in the database, then convert it to ArrayList, and finally put it in the table.

Class MyDefaultTableModel extends DefaultTableModel {

Public MyDefaultTableModel (Object [] [] data, Object [] columnNames) {

Super (data, columnNames)

}

Public boolean isCellEditable (int rowIndex, int columnIndex) {

Return false

}

}

Private DefaultTableModel toDefaultTableModel (ArrayList al) {

Int row = al.size ()

Object [] [] o = new Object [row+1] [5]

Room room = null

O [0] [0] = "room number"

O [0] [1] = "level"

O [0] [2] = "price"

O [0] [3] = "status"

O [0] [4] = "remarks"

For (int item0; I

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