question: protected String [ ] readNext ( LineNumberReader reader ) throws IOException { String [ ] rowDef = null ; do { String nextLine = reader . readLine ( ) ; if ( nextLine == null ) { hasNext = false ; return rowDef ; } String [ ] r = parser . parseLineMulti ( nextLine ) ; if ( r . length > 0 ) { if ( rowDef == null ) { rowDef = r ; } else { String [ ] t = new String [ rowDef . length + r . length ] ; System . arraycopy ( rowDef , 0 , t , 0 , rowDef . length ) ; System . arraycopy ( r , 0 , t , rowDef . length , r . length ) ; rowDef = t ; } } } while ( parser . isPending ( ) ) ; return rowDef ; }
target:  Load the next set of CSV values from the file