🚀 Java Command Line Projects

A collection of Java Command-Line Applications built to strengthen core Java, Data Structures & Algorithms, and Object-Oriented Programming skills.

This repository demonstrates practical implementation of:

• 🧠 OOP Principles
• 📂 File Handling
• 📊 Data Structures
• ⚙️ Algorithmic Logic
• 🧪 Clean Code Practices

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📌 Projects Included

1️⃣ To-Do Manager

A simple task manager built using Java CLI.

Features

• Add / Delete Tasks
• Mark Task Complete
• Persistent Storage
• File Handling

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2️⃣ Student Management System

Manage student records efficiently.

Features

• Add Student
• Search Student
• Delete Student
• Display All Students
• Store Data in File

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3️⃣ Expense Tracker

Track income and expenses from terminal.

Features

• Add Expense / Income
• Category-based tracking
• Monthly summary
• CSV file storage

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4️⃣ Library Management System

Simulates book management system.

Features

• Add Books
• Issue / Return Books
• Track Availability
• Search by Author / Title

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5️⃣ Banking System

A CLI-based banking application.

Features

• Create Account
• Deposit / Withdraw
• Transaction History
• File Persistence

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6️⃣ Data Structures Simulator

Visual simulation of core DSA concepts.

Supports

• Stack
• Queue
• LinkedList
• Sorting Algorithms
• Searching Algorithms

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🛠️ Tech Stack

• Java (JDK 17+ Recommended)
• Java Collections Framework
• File I/O (BufferedReader / BufferedWriter)
• OOP Design Principles

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📂 Repository Structure

Java-Command-line-projects/
│
├── todo-manager/
├── student-management/
├── expense-tracker/
├── library-management/
├── banking-system/
├── data-structure-simulator/
│
└── README.md

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▶️ How to Run Any Project

1️⃣ Navigate into the project folder:

cd project-name

2️⃣ Compile:

javac Main.java

3️⃣ Run:

java Main

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🧠 Concepts Covered

• Encapsulation
• Abstraction
• Polymorphism
• File Handling
• Exception Handling
• Collections (ArrayList, HashMap)
• Sorting & Searching Algorithms
• CLI Menu-driven Architecture

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📸 Sample Console Interface

==============================
      JAVA CLI PROJECTS
==============================

1. Add Data
2. Delete Data
3. Search
4. Display All
5. Exit

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📈 Why This Repository?

This repository is built to:

• Strengthen core Java fundamentals
• Prepare for coding interviews
• Practice DSA implementation
• Build resume-ready Java projects
• Demonstrate clean CLI architecture

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🔮 Future Improvements

• Add unit testing (JUnit)
• Convert projects to Spring Boot REST APIs
• Add database integration (MySQL / PostgreSQL)
• Add Maven / Gradle build system
• Add Docker support

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🏷️ Suggested Badges (Add at Top)

![Java](https://img.shields.io/badge/Java-17-orange)
![Build](https://img.shields.io/badge/Build-Passing-brightgreen)
![License](https://img.shields.io/badge/License-MIT-blue)

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🤝 Contribution

Contributions are welcome!

1. Fork the repository
2. Create a new branch
3. Make improvements
4. Submit Pull Request

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📜 License

This project is licensed under the MIT License.

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If you'd like, Abhijeet, I can next:

• 🔥 Make this README more "professional enterprise style"
• 📄 Generate CONTRIBUTING.md
• 🛡️ Generate SECURITY.md
• 🧪 Add JUnit testing setup
• 🏗️ Suggest a scalable package structure
• 📦 Convert to Maven-based multi-module project