Extending Airline Services using Inheritance & Polymorphism

Business Scenario

After completing this lab, students will be able to:

  • Implement the polymorphism concepts within the application, to design the methods

  • Apply overloading concepts in constructors when needed

  • Implement Inheritance, so as to incorporate reusability

  • Understand and apply overriding concept in inheritance

Pre-Lab Preparation

  • OOP concepts - Instance variables, Instance methods, Constructors

  • Basic understanding of inheritance and types of inheritance

Concept:

In the real world scenario, inheritance is typically implemented for reusability. Child classes are created using the base/ parent class. In the SkyReserve system, we can declare the child classes as ‘DomesticFlight’ and ‘InternationalFlight’.

Task 1: Implement fare method overloading in the Flight class.

1

create a new package “com.itvedant.flightmodeloop.polymorphism”

2

create new class ‘Flight’

3

declare another instance method with the name ‘calculateFare()’ that will calculate the fare based on discount percent

4

declare the main method to create the object and call the methods

5

run the code to check the output

Task 2: Apply inheritance to create child classes and objects.

1

declare the child classes as shown below

2

create the child class objects, and check the output

3

run the code to check the output

Note that, when the object of a child class is created, the parent class constructor is called first and then the child class constructor is created.

4

create the object of InternationalFlight and check the output

Task 3: Apply method overriding in child classes.

1

redeclare the calculateFare() in child class

  • DomesticFlight class
  • InternationalFlight

2

create the object and run the code

Task 1: Understanding BRD

Before you start building anything, you need to clearly understand what the client actually wants.So, let’s begin by understanding the BRD (Business Requirement Document) shared by the client.

BRD Full Form is Business Requirement Details.BRD like a plan for building a house. This plan helps the builder understand what to build.In the same way,BRD tells developers what the client wants to build

Click to download BRD : BiteBox_BRD.pdf

Activity

After going through BRD list down the Core Features and  Web Pages in the tabulated Format as shown Below.

Col 1Col 2Col 3
Row 1
Row 2
Row 3

Formula

Profit = Revenue - Cost

Task 2: Create WireFrame

Now that you understand the requirements, don’t jump into coding yet. Before development, we always visualize the layout.

Now lets  create a simple wireframe for the homepage.

A wireframe is like a layout plan of a house. Before building, you decide where rooms, doors, and windows will be placed.Similarly, a wireframe helps you plan where elements like headers, images, and buttons will appear on a webpage—before adding design or colours.

Task 3: Code Editor Installation

Good work on completing the planning phase.

Now we will start development. Before that, make sure your system is ready with the required tools.

In this step we will install the VS code editor that will help to Write code efficiently,Organize files , Run and test your application

Go to the visual studio code official website  

1

Click to download Homepage Wireframe : Homepage Wireframe

Link - https://code.visualstudio.com/download

Choose your operating system(windows / Mac) and download the installation file.

Double click on the download app and Accept the agreement and click next

2

It is a long established fact that a reader will be distracted

b

Sub Steps

a

 Double click on the download app and Accept the agreement and click next 

public class MathSample {
    public static void main(String[] args) {
        int x = 10;
        int y = 20;
        int sum = x + y;
        
        System.out.println("The sum is: " + sum);
    }
}
public class MathSample {
    public static void main(String[] args) {
        int x = 10;
        int y = 20;
        int sum = x + y;
        
        System.out.println("The sum is: " + sum);
    }
}

public class MathSample {
    public static void main(String[] args) {
        int x = 10;
        int y = 20;
        int sum = x + y;
        
        System.out.println("The sum is: " + sum);
    }
}

 

Great job!
You have successfully completed your first lab on BiteBox Project Onboarding.

In this lab, you have: Understood the BRD, Created a wireframe, Set up your development environment, Organised your project structure, Run your first program

You are now ready to move to the next stage of development

Checkpoint

Next-Lab Preparation

   Git Push

git push origin branchName

Topic : Working with a Text and Listin HTML

1) Power of HTML text tags
2) Customizing your style with CSS
3) Listing it right using HTML
4) HTML Link up , attributes of tag, block vs inline elements

Text box Width : 887
Business Scenario, Pre-lab Preparation, Next-lab Preparation, Task, Activity, Checkpoint : 90%.
Steps : 1,2,3 [Sub Steps - a,b,c]
Normal Text, Topic Name : 80%
Subtopic : 70%
Code Box font Size : 16px

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