// the package name should be hotel.

// NOTE: put this in a class called main

package Hotel;

import java.io.*;

class Hotel {

public static void main(String args[]) {

GUI gui = new GUI();

}

}



// end Main Class
// NOTE: put this in a class named "Hotel"

package Hotel;

import javax.swing.*; //Importing these make the program work.

import java.awt.*;

import java.awt.event.*;

import java.util.*;

import java.io.*;

public class GUI extends JFrame {

int room_NUM_real = 0; // this is used to store special values.

int roomsnumbers = 20; // this defines the size of the hotlel

String booked_STORE[] = new String[roomsnumbers]; // An array to match the sixe of the hotel.

private Button bookButton, unbookButton, viewButton, exitButton; // The buttons declaired.

public class Book_IN extends JFrame { // Input box class (for booking)

public JTextField room; //make a public textfield

public Book_IN ib = this; //make an input BOX.

public class OK1EventHandler implements ActionListener {

/*This Action is performed when

* Ok is clicked with in the

* Booking panel */

public void actionPerformed(ActionEvent e) {

int inputint = Integer.parseInt(room.getText());

if(inputint<=roomsnumbers)

{

if(booked_STORE[inputint-1].equals("Booked"))

{

System.out.println("Room number: " + inputint + " Has Already been booked");

}

else

{

booked_STORE[inputint-1] = "Booked";

ib.hide();

System.out.println("you Just Booked Room: " + inputint);

}

}

else

{

System.out.println("There is no such room numbered: " + inputint);

}

}

}

/* The above fragment of code, tests the room is in range, hasn't been booked, and

* Follows the correct steps to cause the array to acknoledge a booking */

// This next part builds the Book room panel.

public Book_IN() {

setTitle("Book Room");

Panel p1 = new Panel();

p1.add(new Label("Please enter the room"));

room = new JTextField(2);

room.setEditable(true);

p1.add(room);

Button b;

p1.add(b = new Button("OK"));

b.addActionListener(new OK1EventHandler());

this.getContentPane().add(p1);

this.pack();

}

}

/* The Next class Handles Booking in, and Implements ActionListener */

public class BookEventHandler extends Book_IN implements ActionListener {

public BookEventHandler () {

}

public void actionPerformed(ActionEvent e) {

this.show();

}

}

/* The NEXT section is used to create a UI

* for the Booking out senario.

* It follows the same code as booking in, but slightly in reverse.

*/

public class Book_OUT extends JFrame {

public JTextField room;

public Book_OUT ib2 = this;

public class OK2EventHandler implements ActionListener {

public void actionPerformed(ActionEvent e) {

int inputint = Integer.parseInt(room.getText());

if(inputint<=roomsnumbers)

{

if(booked_STORE[inputint-1].equals("Unbooked"))

{

System.out.println("Room number: " + inputint + " Has not been booked");

}

else

{

booked_STORE[inputint-1] = "Unbooked";

ib2.hide();

System.out.println("you Just Unbooked Room: " + inputint);

}

}

else

{

System.out.println("There is no such room numbered: " + inputint);

}

}

}

public Book_OUT() {

setTitle("Unbook Room");

Panel p2 = new Panel();

p2.add(new Label("Please enter the room"));

room = new JTextField(2);

room.setEditable(true);

p2.add(room);

Button u;

p2.add(u = new Button("OK"));

u.addActionListener(new OK2EventHandler());

this.getContentPane().add(p2);

this.pack();

}

}

public class UnbookEventHandler extends Book_OUT implements ActionListener {

public void actionPerformed(ActionEvent e) {

this.show();

}

}

/* This Section is for the VIEWING of the array.

* That is, it shows the user what rooms have and have not been booked.

* it uses the array booked_STORE, and and Int called room_NUM_real as

* well as an index (i) .

*/

public class ViewEventHandler implements ActionListener {

public void actionPerformed(ActionEvent e) {

for(int i=0;i<20;i++)

{

room_NUM_real = i+1;

if(booked_STORE[i].equals("Booked"))

{

System.out.println("Room Number: " + room_NUM_real + " Has been booked");

}

else

{

System.out.println("Room Number: " + room_NUM_real + " Is available");

}

}

}

}

/* This Contorls The EXIT button.

*

*/

public class ExitEventHandler implements ActionListener {

public void actionPerformed(ActionEvent e) {

System.exit(0);

}

}

/* This is the first Window..

* It creates buttons and uses the ActionListener to wait

* for input from the moouse.

*/

public GUI() {

Panel p1 = new Panel();

bookButton = new Button("Book");

unbookButton = new Button("Unbook");

viewButton = new Button("View");

exitButton = new Button("Exit");

bookButton.addActionListener(new BookEventHandler());

unbookButton.addActionListener(new UnbookEventHandler());

viewButton.addActionListener(new ViewEventHandler());

exitButton.addActionListener(new ExitEventHandler());

p1.add(bookButton);

p1.add(unbookButton);

p1.add(viewButton);

p1.add(exitButton);

setTitle("Room Bookings");

this.getContentPane().add(p1);

this.pack();

this.show();

// AMENDED.

/* the following loop is added as to

* fill the array, to rid of empty values.*/

for(int i2=0;i2<20;i2++)

{

booked_STORE[i2] = "Unbooked";

}

}

}