📄 Campus Course & Records Manager (CCRM)

🏫 Overview

This project is a menu-driven Java application that manages students, courses, enrollments, marks, and transcripts.
It demonstrates Object-Oriented Programming, Design Patterns, Exception Handling, Streams & Lambdas, File Handling (NIO.2), and recursive utilities.

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🚀 How to Run

1. Open terminal in the project folder (where CCRMQuick.java is saved).
2. Compile the program:

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📌 Features

• Add Student / Add Course → Create new records.
• Enroll Student → Register a student in a course (max 18 credits rule).
• Record Marks → Enter marks for a student.
• Print Transcript → Show GPA and grades.
• Export → Save student & course data as CSV files.
• Backup & Size → Create timestamped backup and calculate folder size.
• Search by Instructor → Filter courses using streams/lambdas.
• Show Sample Data → View seeded students and courses.

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🧑‍💻 Java Concepts Used

Concept	Where it is used
Abstraction	Person is an abstract class.
Encapsulation	Student has private fields with controlled methods.
Inheritance	Student extends Person.
Polymorphism	Overridden toString() and toCSV().
Custom Exception	MaxCreditLimitExceededException.
Builder Pattern	Course.Builder creates Course objects.
Singleton Pattern	DataStore ensures one shared instance.
Streams & Lambdas	Search courses by instructor using filter() and collect().
NIO.2 File Handling	Export and backup using Files.write(), Files.walk().
Recursive Utility	Folder size calculation in computeSizeRecursive().
Inner/Nested Classes	Student.ProfilePrinter, Course.Builder.

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📂 Project Structure

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🖼️ Screenshots (to include)

1. Program main menu in terminal.
2. Transcript printed for a student.
3. exports/ folder with students.csv and courses.csv.
4. backups/ folder with timestamped backup.

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✅ How to Submit

1. Run the program and capture required screenshots.
2. Ensure exports/ and backups/ are created.
3. Zip the project folder: