question: public static boolean containsWhitespace ( final CharSequence seq ) { if ( isEmpty ( seq ) ) { return false ; } final int strLen = seq . length ( ) ; for ( int i = 0 ; i < strLen ; i ++ ) { if ( Character . isWhitespace ( seq . charAt ( i ) ) ) { return true ; } } return false ; }
target:  Check whether the given CharSequence contains any whitespace characters.