import java.util.Vector;

//-------------------------------------------------------------------------
/**
*  This class represents a rudimentary gradebook that contains a set
*  of student records.  It is not very complete yet, but should serve
*  as an example.
*
*  @author  Stephen Edwards
*  @version Feb 22, 2005
*/
public class Gradebook
{
    //~ Instance/static variables .............................................

    private Vector students;


    //~ Constructor ...........................................................

    // ----------------------------------------------------------
    /**
     * Creates a new Gradebook object.  The gradebook is initially empty.
     */
    public Gradebook()
    {
        students = new Vector();
    }


    //~ Methods ...............................................................

    // ----------------------------------------------------------
    /**
     * Add another student record to this gradebook.
     * @param student the new student record to add
     */
    public void addStudent( Student student )
    {
        students.add( student );
    }


    // ----------------------------------------------------------
    /**
     * Look up a student record by name in this gradebook.
     * @param name the name of the student to find
     * @return the student record, if found, or null if no student record
     *         with the given name is found
     */
    public Student findStudent( String name )
    {
        for ( int i = 0; i < students.size(); i++ )
        {
            Student student = (Student)students.elementAt( i );
            if (   ( name == null && student.name() == name )
                || name.equals( student.name() ) )
            {
                return student;
            }
        }
        return null;
    }
}