📚 Library Management System

A console-based Library Management System built in Java, demonstrating core Object-Oriented Programming (OOP) principles through a real-world use case: managing books, members, and borrow/return transactions.

• Add Books — Add new books to the library catalog with title, author, ISBN, page count, and description
• Search Books — Look up a book by ISBN and check its availability
• Issue Books — Lend a book to a member, automatically tracking the borrow date and due date
• Return Books — Return a book, with automatic late fine calculation (₹5/day) based on the due date
• Availability Tracking — Books are automatically marked as borrowed/available in real time

• Language: Java
• Core Concepts: Object-Oriented Programming (Encapsulation, Constructors), Collections (ArrayList), Date handling (LocalDate, ChronoUnit), Console I/O (Scanner)

LibraryManagementSystem/
└── src/
    ├── Book.java          # Represents a single book
    ├── Member.java        # Represents a library member
    ├── BorrowRecord.java  # Tracks a borrow transaction (member, book, dates)
    ├── Library.java       # Core logic: add/search/issue/return books
    └── Main.java          # Console menu that ties everything together

1. Clone this repository:

   git clone https://github.com/codewithish/LibraryManagementSystem.git
   

2. Navigate to the src folder and compile all files:

   javac *.java
   

3. Run the program:

   java Main
   

4. Follow the on-screen menu to add, search, issue, or return books.

• Designing a multi-class system where classes collaborate (Library orchestrating Book, Member, and BorrowRecord)
• Deciding what data belongs on which class (e.g., realizing dueDate belongs to a transaction, not a Member or a Book)
• Working with Java's LocalDate and ChronoUnit for real date calculations
• Writing clean, single-responsibility methods (searchBook(), findBorrowRecord()) instead of cramming logic into one place

• Persist data to a file or database (currently in-memory only — resets on each run)
• Add a graphical (Swing) or web-based UI
• Support multiple copies of the same book
• Add member borrow history view

Built by Aishu as a portfolio project while preparing for software engineering placements.