question: public static String cleanWhitespace ( String in ) { char [ ] inArray = in . toCharArray ( ) ; StringBuffer out = new StringBuffer ( inArray . length ) ; boolean lastWasSpace = false ; for ( int i = 0 ; i < inArray . length ; i ++ ) { char c = inArray [ i ] ; if ( Character . isWhitespace ( c ) ) { if ( ! lastWasSpace ) out . append ( ' ' ) ; lastWasSpace = true ; } else { out . append ( c ) ; lastWasSpace = false ; } } return out . toString ( ) ; }
target:  Clean - Remove all white spaces