🚀 Employee Management System 🚀

A simple Java application that demonstrates core Object-Oriented Programming principles and GUI development with Java Swing.

📋 Project Overview

This Employee Management System allows users to:

• ✅ Add employee records with name, email, and employee ID
• 👁️ View employee details
• 🔍 Search for employees by ID
• 🗑️ Delete employee records
• 🔐 Check employee access levels based on ID

The application is available in both Command Line Interface (App.java) and Graphical User Interface (EmployeeSwingApp.java) versions!

🌱 Learning Journey

This project represents my personal journey of self-development with several key Java concepts:

• 🧩 Object-Oriented Programming: Through this project, I gained hands-on experience with encapsulation (data hiding in GetEmp class), inheritance (extending classes), and composition (class relationships)
• 🖥️ Java Swing UI: Learned to create interactive GUI applications with event-driven programming
• 📊 Data Structures: Implemented LinkedList to understand dynamic data storage and management
• 🛡️ Exception Handling: Applied try-catch blocks to handle unexpected situations gracefully
• ✓ Input Validation: Developed skills in ensuring data integrity through validation rules

📁 Project Structure

• GetEmp.java: Core employee class with data validation and access control
• accessHierarchy.java: Determines employee access levels based on ID
• checkerID.java: Utility class for employee ID verification
• EmployeeSwingApp.java: GUI version of the application using Java Swing
• App.java: Console-based version of the application

ntern access

Data Validation

• Email addresses must end with "@gmail.com"
• Various error handling for missing or invalid data

Screenshots

Note: Make sure to save the screenshots in your repository as screenshot1.png, screenshot2.png, etc., or update the image paths below to match your file structure.

Employee Information Display

This dialog shows the employee record with name "ueiuar", email "[email protected]", and ID "60420". The dialog displays key employee information in a clean, organized format, demonstrating how to present data to users in a Swing application.

Search Employee by ID

The search dialog prompts users to enter an employee ID (shown with 60420 entered). This feature demonstrates how to create input dialogs and implement search functionality across a data structure using object-oriented principles.

Email Input Validation

This input dialog captures email information with built-in validation. The system ensures emails end with "@gmail.com" through the validation logic implemented in the GetEmp class, showing the power of encapsulation and data validation.

Main Application Interface

The main Swing interface features five clearly labeled buttons for different operations: Add Employee, Show Last Employee, Search by ID, Delete by ID, and Exit. This demonstrates the application of GridLayout and action listeners in Java Swing development.

Getting Started

1. Clone this repository
2. Compile all Java files: javac *.java
3. Run the GUI version: java EmployeeSwingApp OR Run the console version: java App

Prerequisites

• Java Development Kit (JDK) 8 or higher
• Basic understanding of Java programming
• No additional libraries required - uses only standard Java libraries

Development Opportunities

If you choose to use this project as a starting point for your own development, you might consider:

• Adding database connectivity with JDBC for persistent storage
• Implementing more advanced search capabilities
• Creating a more sophisticated UI with additional Swing components
• Adding reporting features to generate employee summaries
• Implementing user authentication and role-based access control

Reflections

This project has been instrumental in my growth as a Java developer. By creating a practical application that solves a real-world problem, I've deepened my understanding of OOP concepts and gained valuable experience with Java Swing. The challenges faced during development have helped me develop problem-solving skills that will be valuable in future projects.

Feel free to provide feedback or suggestions for improvement!