// the enumerate loop in the lookUp method
// Chapter 9, Section 9.4, Page 332
// This method is nearly identical to the lookUp method in the SongLibrary
// class of Chapter 8 and can replace it.
	private void lookUp(String artist) {
		Enumeration enum;	// Refers to an Enumeration of songColl
		Song        song;	// Refers to the most recent Song object taken 
					//    from enum
		enum = songColl.elements();
		// All song objects removed from enum so far have had their artist checked for 
		//   match to artist and if there was a match, the title was printed out.
		while (enum.hasMoreElements()) {
			song = (Song)enum.nextElement();
			if (artist.equals(song.getArtist()))
				System.out.println(song.getTitle());
		}
	}