Java Swing

Table of Content

Topic	Page
Introduction	3
Software Resources:	4
Hardware Resources	4
Program Listing	5
Sample output	8
References	10

Introduction

The Flight Application shows how to book a flight ticket, where the Passenger chooses the class he/she wants, number of seats , and one way or two way.

The program depending on the option entered below will calculate the price.

First class=5500 SAR

Business Class= 3200 SAR

Economy Class= 1000 SAR

Software Resources:

JCreator Program

Hardware Resources

Pentium 4 1GH Or above

Ram 1G

Program Listing

Hierarchy of the program

class Passenger

public String Pname;

public Passenger()

public Passenger(String Pname_2,String TClass_2,int seat_2,String way_2)

public double GetPrice()

public String GetPassenger()

Abstract Reserv

public int seat; public String way; public double price; public String TClass;

public Reserv (String TClass_2,int seat_2,String way_2)

public abstract double GetPrice();

public String GetInfo()

Interface Classes

public final int first_class= 5500; public final int business_class=3200; public final int economy_class=1000;

public String GetInfo();

Description :

To apply inheritance and produce an application we did it this way :

· The Reserv class implements the Classes interface

· The Passenger class extends Reserv class

The Flight Application :

· Extends the Jframe and implements the ActionListener

So we can use the SWING features which is GUI as result

Controls & containers components:

1- JComboBox to disply class options :

"First Class","Business Class","Economy Class"

2- ButtonGroup to hold directions :

JRadioButton one = new JRadioButton("One Way");

JRadioButton two = new JRadioButton("Two Way");

3- JTextField to display :

Name

Price

seats

4- JPanel to contain the componenets

5- JButton to interact with user click

The program logic :

When user chooses the options the program send the parameters through the Object :

Reserv passenger;

By using the constructor

public Passenger(String Pname_2,String TClass_2,int seat_2,String way_2)

The class receive parameters and do the calculations required depending on the :

A- TClass_2:

To calculate the price

B- way_2:

To return the price or double it if two way is selected

C- seat_2 :

Multiply price by no of seats

Program Exceptions:

1- Predefined Exception :

where Java ensure the input is correct

1-if the user leave the field empty

2-if the user puts negative value or zero

Sample output

If seat is left empty :

If seat number is negative or zero :

If none of the previous mistakes happened:

References

· Absolute Java 5th edition  

· http://www.java2s.com/Tutorial/Java/0240__Swing/Settooltipforbutton.htm

· http://stackoverflow.com/questions/17314253/simple-jframe-with-a-combobox-and-a-textfield-and-a-result-in-a-label

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