Awesome! Here's a comprehensive GitHub Classroom-style assignment covering all the following topics:

• ✅ What is a Method
• ✅ Naming and Best Practices
• ✅ Declaring and Invoking Methods
• ✅ Void and Return Type Methods
• ✅ Methods with Parameters
• ✅ Value vs. Reference Types
• ✅ Overloading Methods

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📘 Java Methods & Fundamentals – Assignment

🎯 Objective

The goal of this assignment is to strengthen your understanding of Java methods. You will apply best practices in method naming, understand how data is passed (by value or reference), and implement overloaded methods to simulate real-world behavior.

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📂 Project Structure

java-methods-assignment/
├── src/
│   ├── StudentManager.java
│   ├── Calculator.java
│   ├── Logger.java
│   ├── Demo.java
├── README.md
└── .gitignore

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🧑‍🏫 Assignment Tasks

✅ 1. StudentManager.java

Create a class that demonstrates:

• A method to print student details (name, age, GPA).
• A method to calculate GPA (takes 3 scores and returns average).
• Apply method naming best practices.
• Use parameters and return values effectively.

📌 Example usage:

printStudentInfo("Alice", 20, 3.7);
double gpa = calculateGPA(88, 92, 79);

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✅ 2. Calculator.java

Create a calculator with overloaded add() methods that support:

• int add(int, int)
• double add(double, double)
• int add(int, int, int)

Also include:

• multiply(int, int)
• multiply(double, double)

📌 Output should demonstrate the difference.

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✅ 3. Logger.java

• Build a utility logger class with:

  • log(String message)
  • log(String level, String message)
  • log(String message, boolean timestamped)

• Bonus: Use LocalTime to prepend timestamps if needed.

• Reinforces method overloading and optional behavior.

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✅ 4. Demo.java

Create a main() class that:

• Demonstrates all classes and methods.
• Showcases the difference between value and reference types:
  • Pass a primitive into a method that attempts to change it.
  • Pass an array and change it inside a method.

📌 Sample:

int x = 10;
modifyValue(x); // should not change x

int[] numbers = {1, 2, 3};
modifyArray(numbers); // should change first element

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📜 Requirements

• Follow Java naming conventions.
• Write JavaDocs-style comments above each method.
• Organize your code in a src/ folder.
• Use only Java 8+ features.

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🧪 Sample Output

== Student Manager ==
Student: Alice, Age: 20, GPA: 3.7

== Calculator ==
add(2, 3): 5
add(2.5, 3.5): 6.0
add(1, 2, 3): 6

== Logger ==
Message: Welcome!
[INFO] App started
[10:40:21] Running scheduled task

== Value vs Reference ==
Primitive value: 10
After method: 10
Array first value before: 1
Array first value after: 999

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📚 References

• Java Methods (Oracle)
• Method Overloading in Java – GeeksForGeeks
• Value vs Reference (Baeldung)
• Java Naming Conventions (Oracle)

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🧠 Bonus (Optional)

Add unit tests using JUnit 5 to test:

• Calculator methods
• Logger output (just dummy assertions)
• Student GPA calculations

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📥 Submission Instructions (GitHub Classroom)

1. Clone the GitHub Classroom repository.
2. Complete the code inside the src/ directory.
3. Commit and push your changes.

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🏁 Grading Rubric

Criteria	Points
Method Naming and Structure	20
Void vs Return Usage	10
Parameter Handling	15
Overloading Usage	15
Value vs Reference Demo	10
Working Main Demo	10
Clean Code & Comments	10
Bonus: Unit Tests	+10

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