FinCheck Java Setup & Programming Fundamentals

Business Scenario

You are joining the FinCheck Project as a QA Tester in a Banking Application System.

After successfully understanding Banking Workflows, Database Validation, and Webpage Inspection, your manager now introduces you to Java Programming Fundamentals used in QA and Automation Environments.

The FinCheck Testing Team works with Transaction Validation

Programs, Simple Automation Scripts, and Reusable Validation Utilities built using Java.

Before starting automation activities, your manager clearly says :-
“A QA Tester must first understand Basic Programming Structure before working with Validation Scripts and Automation Tools. ”

Your responsibility is to understand :-
How Java Programs are Created
How Testers Execute Java Programs
 How Java Syntax and Structure Work
How Eclipse IDE is Used during QA Activities

Pre-Lab Preparation

  • Install Eclipse
  • Write basic Java programs
  • Understand syntax and structure
  • Execute scripts

Task 1: Install Eclipse

Downloading JDK

1

Go to the Official JDK

Website to download the file.

https://www.oracle.com/in/java/technologies/downloads/

Visit the Official Website 

a

Choose the version that best suits your operating system—Windows, macOS, or Linux (choose the LTS version)

Select the Version

b

Click on the respective link to download the installer

Select the Version

c

Installation of JDK

2

Locate the .exe file (e.g., jdk-23-windows-x64_bin.exe)  

Run the JDK Installer

a

double-click to install.

Follow the setup wizard to finish.

Navigate to C:\Program Files\Java\jdk-{your JDK version}\bin, replacing with your installed version.

Setup Environment Variables

b

Step 2.1

To set the environment variables, search for “Environment Variables” in the taskbar and click on “Edit the system environment variables.

Step 2.2

In the Advanced tab, Click on "Environment Variable"

Step 2.3

Under System variables, select Path and click Edit. Click New, paste your bin path and then click OK.

Paste your bin path here

Step 2.4

In the Environment Variables window, under System variables

Click on new

 Set Variable name as JAVA_HOME and

Variable value as C:\Program Files\Java\jdk-{your JDK version}.

Check the Java Version

C

Open Command Prompt and enter the following commands:

java --version

javac --version

Installation Of Eclipse

3

official Eclipse Downloads page.

Open your web browser and go to the

a

https://www.eclipse.org/

eclipse.org

Open your web browser and go to the

 

b

Click the Download button to download the Eclipse Installer.

Download EXE

c

Now, click on the "Download x86_64" button.

Open Download EXE

d

Now go to File Explorer and click on "Downloads" after that click on the "eclipse-inst-jre-win64.exe" file for installing Eclipse IDE.

Install Eclipse

e

Then click on the Install button

Then, click on "Eclipse IDE for Java Developers".

Create New Project

f

Now click "Create a new java project

Create New Project

g

Now click "Create a new java project

Now you’re all set to start creating new Java projects using the Eclipse IDE.

Congratulations!! You have successfully downloaded the Eclipse software for your Windows PC.

Programs, Simple Automation Scripts, and Reusable Validation Utilities built using Java.

Before starting automation activities, your manager clearly says :-
“A QA Tester must first understand Basic Programming Structure before working with Validation Scripts and Automation Tools. ”

Your responsibility is to understand :-
How Java Programs are Created
How Testers Execute Java Programs
How Java Syntax and Structure Work
How Eclipse IDE is Used during QA Activities

Pre-Lab Preparation

  • Install Eclipse
  • Write basic Java programs
  • Understand syntax and structure
  • Execute scripts

Task 2: Understand Java Fundamentals

Understand Java

a

What is Java?

Java is a programming language used to create applications, automation scripts, validation utilities, and testing frameworks.

QA testers use Java in automation testing, validation scripts, data processing, and testing utilities.

Types of Java Usage in QA

  • Test Data Handling

     Used to store and display testing data.

  • Validation Logic

     Used to validate transaction values and application behavior.

  • Console Output Verification

     Used to print and verify testing results.

How Java Works

  • Tester writes Java code.

  • Java compiler converts code into executable format.

  • Program runs inside Java Virtual Machine (JVM).

  • Output displays inside console window.

Real Life Example

QA tester creates Java program to display :-

  • customer name

  • account number

  • transaction amount

inside console output.

Understand Java Program Structure 

b

What is Java Program Structure?

Java program structure represents organized arrangement of Java code.

Every Java program contains :-

  • class

  • main method

  • statements

  • output instructions

Syntax

public class Fincheck{

}

Class Syntax

Main method Syntax

public static void main(String[] arg){

}
public class WelcomeFincheck {
	public static void main(String[] args) {
	System.out.println("Welcome to FinCheck");
	}
}

Basic Java Structure

Task 3: Understand Eclipse IDE Interface

 

 Understand Eclipse IDE

a

What is Eclipse IDE?

Eclipse IDE is a software application used to write, execute, and manage Java programs.

QA testers use Eclipse to create automation scripts and validation programs.

Types of Activities Performed in Eclipse

  • Write Java Code

     Create Java programs.

  • Execute Programs

     Run Java applications.

  • Modify Programs

     Update validation logic.

  • Debug Programs

     Identify coding issues.

Real Life Example

Tester creates transaction validation program using Eclipse IDE.

Understand Eclipse Workspace

b

What is Workspace?

Workspace is the main working area where Java projects and files are stored.

Every Java project created inside Eclipse is saved inside workspace location.

 

Eclipse Interface Components

  • Package Explorer

    Displays project files and folders.

  • Editor Window

    Used to write Java code.

  • Console Window

    Displays program output.

  • Run Button

    Executes Java program

Create First Java Program

What is Java Project?

Java project is a container that stores Java program files and resources.

QA testers create projects for :-

 

  • validation programs

  • practice activities

Perform Activity

  • Open Eclipse IDE

  • Click File → New → Java Project

  • Enter Project Name :- FinCheckProject

  • Click Finish

Create Java Class

c

What is Java Class?

Java class contains program logic and executable code.

Every Java program is written inside a class.

Perform Activity

  • Right click src folder

  • Click New → Class

  • Enter Class Name :- FinCheckDemo

  • Select public static void main option

  • Click Finish

Task 4: Understand Console Output

Understand Java Program Execution

a

What is Java Program Execution?

Java program execution means running Java code and observing generated output inside console window.

When tester executes Java program :-

  • Java compiler checks code syntax

  • program gets processed

  • output displays inside console area

QA testers execute Java programs to verify :-

  • printed messages

  • validation results

  • transaction information

  • application logic behavior

How Java Execution Works

  • Tester writes Java code.

  • Tester clicks Run button inside Eclipse IDE.

  • Java compiler checks program syntax.

  • Program executes successfully.

  • Console window displays output.

Real Life Example

   1. customer name 

   2. account number

   3. transaction amount

  • After execution, all information displays inside console output window.

Print basic output

b

What is Console Output?

Console output displays program results inside terminal or console window.

QA testers use console output to verify :-

  • transaction values

  • validation results

  • test execution messages  

 

Types of Console Messages

  • Transaction Details

     Displays transaction information.

  • Validation Messages

     Displays valid or invalid status.

  • User Information

Displays customer details.

Real Life Example

Tester prints :-

  • customer name

  • transaction amount

  • account number

inside console output.

Syntax

System.out.println("Welcome to FinCheck");

PRINT WITH NEW LINE 

System.out.print("Welcome to FinCheck");

PRINT WITHOUT NEW LINE  

System.out.print("VariableName");

PRINT A VARIABLE  

System.out.print("Welcome to FinCheck"+ VariableName);

PRINT TEXT + VARIABLE TOGETHER

Activity

  • Write Java program

  • Use System.out.println()

  • Execute Java program

  • Observe console output

 

Good Job!!

In this lab, you learned the Fundamentals of Java Programming, Java Program Structure, Eclipse IDE, Java Execution Flow, and Printing Output using Java.

You also practiced Creating Java Projects, Writing Java Syntax, Executing Java Code, and Verifying Console Output successfully.

By completing this lab, you now understand how QA Testers Create, Execute, and Validate Java Programs using Java Development Environments.

Checkpoint

Next-Lab Preparation

   Git Push

git push origin branchName
  • Declare variables
  • Use data types (int, double, String)
  • Perform calculations
  • Store transaction values​