protected String getUserDefinedFieldName(String field) {
        int index = field.indexOf('-');
        char letter = getUserDefinedFieldLetter();

        for (int i = 0; i < index; ++i) {
            if (field.charAt(i) == letter) {
                return field.substring(index + 1);
            }
        }

        return null;
    }
protected String getUserDefinedFieldName ( String field ) { int index = field . indexOf ( '-' ) ; char letter = getUserDefinedFieldLetter ( ) ; for ( int i = 0 ; i < index ; ++ i ) { if ( field . charAt ( i ) == letter ) { return field . substring ( index + 1 ) ; } } return null ; }
Returns the user defined field without its prefix.

@param field the name of the user defined field
@return the user defined field without the prefix, or null if the fields
doesn't apply to this control file.
@since 1.1