read the attribute at the given index . concode_field_sep String CLOSE_MESG concode_elem_sep int index concode_elem_sep int len concode_elem_sep StringBuffer buffer concode_field_sep boolean hasNext concode_elem_sep void close
String function ( ) { if ( index < 0 ) { throw new IOException ( CLOSE_MESG ) ; } buffer . setLength ( len ) ; buffer . append ( ++ index ) ; return buffer . toString ( ) ; }