Library Management System (Java)

A robust, console-based Java application designed to automate library workflows, including member registration, book inventory management, and transaction tracking.

🚀 Features

• Automated Persistence: Uses Java Serialization to save and load data from .dat files, ensuring zero data loss between sessions.
• Dynamic Inventory: Efficiently manage book records with real-time status updates (Available vs. Issued).
• Member Tracking: Links books to specific member IDs to track accountability.
• Smart Validation: Prevents duplicate entries and ensures books can only be issued to registered members.
• Improved UX: Simulated loading states and formatted console output for a professional feel.

🛠️ Technical Stack

• Language: Java 17+
• Data Structures: HashMap (for $O(1)$ search efficiency), ArrayList.
• I/O Handling: java.io.Serializable, ObjectInputStream/ObjectOutputStream.
• Concurrency: Thread.sleep utilized for UI pacing.

📂 Project Structure

• Member Class: Handles member attributes (ID, Name).
• Book Class: Manages book metadata and issuance state.
• LibrarySystem Class: The core engine containing CRUD operations, file persistence logic, and the user interface menu.

📖 How to Run

1. Compile the code:

   javac LibrarySystem.java