This project demonstrates an end-to-end Continuous Integration and Continuous Deployment (CI/CD) pipeline using DevOps tools. It automates the process of building, testing, and deploying a Java web application from source code to a running application on a server.

1. Developer writes code and pushes to Git repository
2. Code is hosted on GitHub
3. Jenkins pulls the latest code automatically
4. Build process using Ant/Maven
5. Unit testing using JUnit
6. Deployment to Tomcat server
7. Application becomes available to users

• Git — Version Control
• GitHub — Code Repository
• Jenkins — CI/CD Automation Server
• Java — Application Development
• Ant / Maven — Build Tool
• JUnit — Testing Framework
• Tomcat — Application Server

Before running this project, ensure the following are installed:

• Git
• Java (JDK)
• Apache Tomcat
• Jenkins
• Ant or Maven
• Internet connection

• GitHub Plugin
• Ant Plugin
• JUnit Plugin
• Deploy Plugin
• Pipeline Plugin

SampleWebApp/
│
├── WebContent/          # Web pages and static content
├── src/example/         # Java source code
├── build/classes/       # Compiled classes
├── build.xml            # Ant build script
├── checkstyle_errors.xml
├── sun_checks.xml
├── TestCalculator_JUnitResult.txt
└── README.md

1. Clone the repository

git clone https://github.com/jitendar6486/SampleWebApp.git
cd SampleWebApp

2. Configure Jenkins job with GitHub repository

3. Set build steps using Ant/Maven

4. Configure deployment to Tomcat server

5. Run the pipeline

. Automated build . Automated testing . Automated deployment . Running web application on Tomcat

This project demonstrates how multiple DevOps tools work together to implement a fully automated CI/CD pipeline, enabling faster delivery, improved reliability, and reduced manual effort.