🧠 WorkforceCLI — Employee Management System

A command-line Java application that demonstrates Object-Oriented Programming (OOP), Recursion, and Algorithmic Thinking through a simulated company employee management system.
Designed to showcase sorting, searching, and structured data handling in a clean CLI environment.

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✨ Features

• Add employees manually or generate random test data
• Department and manager class hierarchy
• Recursive insertion sort by name
• Binary and linear search for employee lookup
• Input validation and clean menu-driven navigation
• CSV export for data persistence

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🧩 Technologies

Tool	Purpose
Java (JDK 17)	Core programming language
NetBeans / VS Code	Development environment
Ant	Build automation
Git & GitHub	Version control and portfolio hosting

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📁 Project Structure

File / Folder	Description
Employee.java	Defines base employee attributes and methods
Manager.java	Extends employee class with managerial fields
Department.java	Represents company departments
DreamCompanyApp.java	Main CLI entry point
applicant_data.csv	Demo dataset used for testing
.gitignore	Ignored build and IDE files
README.md	Project documentation

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🧮 Algorithms Implemented

Algorithm	Type	Purpose
Insertion Sort (Recursive)	Sorting	Sort employees alphabetically by name
Bubble Sort	Sorting	Compare performance with recursion
Binary Search (Iterative)	Searching	Fast employee name lookup
Linear Search	Searching	Baseline comparison for efficiency

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🧠 Learning Highlights

• Applying OOP concepts (Inheritance, Polymorphism, Encapsulation)
• Implementing Recursive algorithms for sorting
• Comparing algorithm efficiency and complexity
• Managing and structuring data in a CLI Java application
• Working with CSV I/O and validation logic

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🧪 How to Run

🟣 Option 1: Using NetBeans

1. Open NetBeans IDE
2. Go to File → Open Project
3. Select the project folder (WORKFORCE-CLI)
4. Run DreamCompanyApp.java
5. Follow the on-screen menu

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🟦 Option 2: Using VS Code

1. Open VS Code
2. Install the Extension Pack for Java (from Microsoft)
3. Open the WORKFORCE-CLI folder
4. Open DreamCompanyApp.java
5. Click the ▶️ Run button at the top-right corner
   or run manually via the VS Code terminal:

   javac -d bin src/workforce/*.java
   java -cp bin workforce.DreamCompanyApp
   

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🖥️ Option 3: Using Command Line

javac -d bin src/workforce/*.java
java -cp bin workforce.DreamCompanyApp

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📸 Screenshots/View of the CLI

🏠 Main Menu

✍️ Add Employee

Add a New Employee

Add Random Employees

🔍 Search Employee

Search By Fullname

Search By Multiple Names

Search By Role

📋 Sorted Employee Lists

Sort By Name

Sort By Salary

Sort By Department

⚠️ Validation & Behavior

Validation

Report & Behavior

🧾 Display All

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🏆 Future Improvements

• Add data filtering by department or role
• Implement JUnit tests for sorting and searching algorithms
• Add JSON import/export support
• Improve CLI visuals with color-coded menus

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🧩 System Modelling & Build Report

This report documents the full system design and UML modelling for the Workforce CLI Java Application (Dream Tech System).

📘 Contents

• System Overview & Boundary Diagram
• Five detailed Use Case Narratives & Diagrams
• UML Class Diagram and Sequence Diagrams
• User Stories and Acceptance Criteria
• Unit Testing Scenarios linked to project source code

📄 View Full Report (PDF)

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👩‍💻 Author

Egshiglen Enkhbayar
📍 Dublin, Ireland
🔗 GitHub | LinkedIn