package studentDB;
/**
 *
 *	Represents a course.  A course has a title, and a list
 *      of students taking it.
 *
 */
public class CourseImpl implements Course {
    //  The title of the course
    private String title;

    //  The list of students taking the course
    private StudentList students;

    /**
     *	@param title The title of the course
     */
    public CourseImpl (String title) {
	this.title = title;
	students = new StudentListImpl();
    }

    /**
     *	Sets the title of the course.
     *	@param title The title of the course
     */
    public void setTitle (String title) {
	this.title = title;
    }

    /**
     *	Returns the title of the course.
     *	@return The title of the course
     */
    public String getTitle () {
	return title;
    }

    /**
     *	Sets the list of enrolled students to the given list.
     *	@param students The students enrolled in this course
     */
    public void setEnrolledStudents (StudentList students) {
	this.students = students;
    }

    /**
     *	Returns the list of students enrolled in this course.
     *	@return The students enrolled in this course
     */
    public StudentList getEnrolledStudents () {
	return students;
    }

    /**
     *	Determines whether this course is equal to the given
     *	course.  Two courses are equal if their titles are
     *	the same.
     *	@param c The course we are testing for equality
     *	@return Whether this course is equal to given course
     */
    public boolean equals (Course c) {
	return title.equals (c.getTitle());
    }

    /**
     *	Returns a string representation of the course,
     *  listing the course's title and enrolled students.
     *	@return String representation of course
     */
    public String toString() {
	return title;
    }
}