# Workshop 02 - IntroToOOP

# Course Registration System — Workshop Assignment

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## Overview
In this assignment, you will complete a partially implemented course registration system using Object-Oriented Programming (OOP) concepts in Java.

You are provided with starter code. Your task is to complete the missing parts marked with `TODO`.

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## What is Already Implemented

The following parts are already implemented for you:

### Course Class
- Fields: `courseName`, `courseCode`, `capacity`
- Constructor
- Getter methods
- Methods for managing capacity:
  - `reduceCapacity()`
  - `increaseCapacity()`

### Student Class
- Fields and constructor
- Getter methods

### RegistrationSystem Class
- Fields and constructor

### Main Class
- Basic structure and instructions

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## Your Task (TODO Sections)

You must complete all methods marked with `TODO`.

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## Requirements

### 1. Student Class

#### Method: `addCourse(Course c)`
- Register the student in the course
- Only allow registration if the course has available capacity
- Reduce course capacity if registration is successful
- Return `true` if successful, otherwise `false`

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#### Method: `dropCourse(Course c)`
- Remove the course from the student's registered list
- Increase course capacity after dropping
- Return `true` if the course was successfully removed, otherwise `false`

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#### Method: `showRegisteredCourses()`
- Print all courses the student is registered in
- Display course name and course code

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### 2. RegistrationSystem Class

#### Method: `addCourseToSystem(Course c)`
- Add the course to the system list

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#### Method: `findCourseByCode(String code)`
- Search for a course using its course code
- Return the matching course if found
- Return `null` if no course is found

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#### Method: `showAllCourses()`
- Print all courses in the system
- Include:
  - course name
  - course code
  - remaining capacity

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### 3. Main Class

You must complete the scenario in `main`:

- Create at least 3 courses
- Create one student
- Create a registration system
- Add courses to the system
- Register the student in some courses
- Drop one course
- Print final results

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## Example Scenario

Create the following:

Courses:
- Advanced Programming (AP1404, capacity 2)
- Data Structures (DS2201, capacity 1)
- Database Systems (DB3301, capacity 3)

Student:
- Name: Ali
- ID: 402222001

Expected actions:
- Register the student in 2 courses
- Drop 1 course
- Print:
  - Student's registered courses
  - Remaining capacity of all courses

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## Constraints

- Do NOT modify the `Course` class
- Do NOT remove existing method signatures
- You must use `ArrayList<Course>`
- Do NOT use public fields

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## Bonus (Optional)

- Prevent duplicate course registration
- Prevent registration when capacity is full
- Limit the number of courses per student
- Add search by course name

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## Workflow

1. Fork the repository to your own Git account
2. Clone your forked repository
3. Create a new branch named `develop`:

   git checkout -b develop

4. Complete all TODO sections in the project
5. Commit your changes with meaningful commit messages
6. Push your branch to your repository:

   git push origin develop

7. Create a Pull Request from `develop` to `main`

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## Submission

- Submit the link to your Pull Request
- Your PR must be from `develop` → `main`
- Deadline: End of the day
- Your code must compile and run successfully