import java.util.ArrayList;

public class RegistrationSystem {
    private ArrayList<Course> courses;

    public RegistrationSystem() {
        courses = new ArrayList<>();
    }

    public void addCourseToSystem(Course c) {
        // Add the course to the system
        courses.add(c);
    }

    public Course findCourseByCode(String code) {
        // Search for a course by course code
        for (Course c : courses) {
            if (c.getCourseCode().equals(code)) {
                return c;
            }
        }
        return null;
    }

    public void showAllCourses() {
        // Print all courses in the system
        for (Course c : courses) {
            System.out.println(
                    c.getCourseName() + " - " +
                            c.getCourseCode() +
                            " | Remaining capacity: " +
                            c.getCapacity()
            );
        }
    }
}