question: @ Override public char next ( ) { ++ docPos ; if ( docPos < segmentEnd || segmentEnd >= doc . getLength ( ) ) { return text . next ( ) ; } try { doc . getText ( segmentEnd , doc . getLength ( ) - segmentEnd , text ) ; } catch ( BadLocationException e ) { throw new RuntimeException ( e ) ; } segmentEnd += text . count ; return text . current ( ) ; }
target:  Increments the iterator's index by one and returns the character at the new index.