Lab 6 - File I/O - Due: 29-Nov-2012
1. Add int id to the class generate it sequentially from the last
2. Add public static void listAll() that will open
the file and list all rows in a tabular format.
3. Add public boolean save() to save the current row to the file.
4. Add public boolean read(int id) to read from the file the row based
on the id.