private class Row {
private int keyField;
private char otherFields[][];
/*
Each row consists of unique key and one or more character array fields.
Each character array field is a fixed length field (for example 10
characters).
Each field can have a different length.
Fields are padded with null characters so a field with a length of
of x characters always uses space for x characters.
*/
//Constructors and other Row methods