1	// Course.java
     2	//
     3	// Ethan Bolker
     4	// May, 2004 for cs110 final project
     5	
     6	import java.util.*;
     7	
     8	/**
     9	 * A Course object in the WISE system.
    10	 */
    11	public class Course extends WISEObject
    12	{
    13	    // private fields for Course attributes
    14	    private TimeOfDay timeOfDay;
    15	    private int capacity;
    16	    private Professor professor; // Professor teaching this Course
    17	
    18	    /**
    19	     * Construct a new Course.
    20	     */
    21	    public Course( StringTokenizer st )
    22		throws WISEException
    23	    {
    24		super(st.nextToken());
    25		String days = st.nextToken();
    26		String time = st.nextToken();
    27		timeOfDay   = new TimeOfDay(days, time);
    28		capacity    = Integer.parseInt(st.nextToken());
    29		setList( new ClassList(this) );
    30	    }
    31	
    32	    public String toString()
    33	    {
    34		return getName() + "\t" + timeOfDay + "\t" + capacity;
    35	    }
    36	
    37	    /**
    38	     * Add a Student to this Course.
    39	     */
    40	    public void add( Student student )
    41		throws WISEException
    42	    {
    43		if (getList().size() >= capacity) {
    44		    throw new WISEException( "Course full: " + getName());
    45		}
    46		getList().put( student );
    47	    }
    48	
    49	    /** 
    50	     * Does this course meet at the specified time, and
    51	     * is there room in it?
    52	     */
    53	    public boolean isAvailable( TimeOfDay tod )
    54	    {
    55		return ( tod.equals(timeOfDay) && 
    56			(getList().size() < capacity ));
    57	    }
    58	
    59	    /**
    60	     * Assign a Professor to teach this Course.
    61	     */
    62	    public void add( Professor professor )
    63		throws WISEException
    64	    {
    65		Professor oldProf = this.professor;
    66		if ( professor == oldProf ) {
    67		    return;
    68		}
    69		professor.add(this); 
    70		this.professor = professor;
    71		if ( oldProf != null ) {
    72		    oldProf.unAssign( this );
    73		}
    74	    }
    75	
    76	    public TimeOfDay getTimeOfDay()
    77	    {
    78		return timeOfDay;
    79	    }
    80	
    81	    private class ClassList extends StudentList
    82	    {
    83		public ClassList( Course course )
    84		{
    85		    super("Class list for " + course);
    86		}
    87	
    88		public String getHeader( ) 
    89		{
    90		    StringBuffer buf = new StringBuffer("*** CS110 WISE ***\n");
    91		    buf.append( this.getName());
    92		    buf.append( "\n");
    93		    buf.append( (new Date()).toString() );
    94		    buf.append( "\n\nProfessor " + 
    95				(professor == null ?
    96				 "**unassigned**"  :
    97				 professor.getName()));
    98		    buf.append( "\nList of students\nname  id");
    99		    return buf.toString();
   100		}
   101	    }
   102	}