Java Web Development Repository

Welcome to the Java Web Development Repository! This repository is designed to help you explore and implement various technologies for building robust web applications using Java.

Technologies Used

• JAVA: It is the language used for this web development.
• Eclipse IDE: Integrated Development Environment for Java and web development.
• JDBC: Java Database Connectivity for managing database interactions.
• MySQL: Relational database management system for storing data.
• Maven: Build automation tool for managing dependencies and project structure.
• Servlets: Java classes to handle requests and responses on the server.
• JSP: JavaServer Pages for creating dynamic web pages.
• Hibernate: Object-Relational Mapping framework for managing database operations.
• Spring & Spring Boot: Powerful frameworks for building scalable and efficient applications.
• Postman: Collaboration platform for API development, testing, and management.

---

Project Description

Project 1 - MAVEN Project

This project demonstrates the use of Maven for dependency management in a Java web application. Maven is a powerful build automation tool used primarily for Java projects. It simplifies the process of managing project dependencies, and building, and deploying applications.

Features:

• Maven project structure
• Dependency management
• Build and deployment configuration

Project 2 - Cookie Management

This project focuses on the management of cookies within a Java web application. Cookies are small pieces of data stored on the client's browser to maintain stateful information across multiple requests.

Features:

• Setting cookies
• Retrieving cookies
• Deleting cookies

Project 3 - Login Session Management

This project demonstrates how to manage user login sessions in a Java web application. Session management is crucial for maintaining user state and ensuring secure access to application resources.

Features:

• User authentication
• Session creation and management
• Session invalidation

Project 4 - CRUD Operations on Servlet

This project showcases how to perform CRUD (Create, Read, Update, Delete) operations using Java servlets. CRUD operations are fundamental to most web applications as they allow for the management of application data.

Features:

• Create operation: Adding new records
• Read operation: Retrieving records
• Update operation: Modifying existing records
• Delete operation: Removing records

Project 5 - Printing Statement on Servlet

This project demonstrates how to print statements on a web page using Java servlets. It covers the basics of writing output to the client’s browser from a servlet.

Features:

• Setting up a servlet
• Printing text on a web page
• Handling HTTP requests and responses

Project 6 - Basic Data Retrieval App

This project demonstrates a basic data retrieval application built using JSP (JavaServer Pages). The application allows users to log in and retrieve data after successful authentication.

Features:

• User login authentication
• Data retrieval post-login
• JSP for dynamic web content
• Secure data handling

Project 7 - User Details Management System

This project is designed to manage user details using JSP (JavaServer Pages) and JDBC (Java Database Connectivity). The system allows users to view, add, update, and delete their details.

Features:

• User registration and login
• JSP for dynamic web content
• JDBC for database interactions
• Handling of user data

Project 8 - Basic CRUD Operations with Hibernate

This project demonstrates a basic CRUD (Create, Read, Update, Delete) application built using Hibernate ORM (Object-Relational Mapping). The application allows users to perform CRUD operations on a database through a simple interface.

Features:

• Create: Add new entries to the database.
• Read: Retrieve and display data from the database.
• Update: Modify existing data entries.
• Delete: Remove data entries from the database.
• Hibernate ORM: Simplifies database interactions by mapping Java objects to database tables.
• JSP: Used for rendering dynamic web content.
• MVC Architecture: Organized code structure following Model-View-Controller design.

Project 9 - Basic CRUD Operations with Spring

This project demonstrates a basic CRUD (Create, Read, Update, Delete) application built using the Spring Framework. The application allows users to perform CRUD operations on a database through a simple web interface.

Features:

• Create: Add new entries to the database.
• Read: Retrieve and display data from the database.
• Update: Modify existing data entries.
• Delete: Remove data entries from the database.
• Spring Framework: Leverages the Spring ecosystem for dependency injection, data persistence, and web functionality.
• Spring Data JPA: Simplifies database interactions by abstracting the repository layer and handling CRUD operations.
• Spring MVC: Follows the Model-View-Controller design pattern to organize the code structure.
• Thymeleaf/JSP: Used for rendering dynamic web content on the front-end.

Project 10 - Login Page with Session Management in Servlets

This project demonstrates a simple login functionality using Java Servlets and session management. It includes user authentication and redirection to a personalized welcome page. The application also provides a logout feature to terminate the session and redirect back to the login page.

Features

• Login Page:
  A form with the following fields:

  • Username
  • Name
  • Password
    Includes a "Submit" button to process login details.

• Session Management:

  • Maintains the user session after successful login.
  • Displays a personalized welcome message, e.g., "Welcome, [Username]!" on the next page.

• Redirection:

  • After login, users are redirected to a welcome page displaying their username.
  • Logout link redirects users back to the login page and invalidates the session.

• Logout Functionality:

  • Secure logout by invalidating the session.
  • Redirects to the login page.

Technologies Used

• Java Servlets: Backend logic for handling login validation and session management.
• JSP: For creating dynamic and interactive front-end pages.
• HTTP Session Management: Provides a secure and stateful user experience.
• Apache Tomcat: For running the web application.

---

Getting Started

To get started, clone the repository and explore the various directories and code examples. Each technology has its own folder with detailed explanations and sample code to help you understand and implement it in your projects.

Usage

• Clone the repository:

  git clone <repository_url>

Explore directories:

Navigate to each technology folder (e.g., jdbc-examples, servlets-examples) to find detailed README files and sample code.

Run examples:

Follow the instructions in each README file to run the examples locally and experiment with the code.

Contributing

Contributions are welcome! If you find any issues or have suggestions for improvements, please submit a pull request or open an issue