Hmmmm Interesting Dominik. Thanks for the information. It's sure is clean, but didn't know that performance of regexp is "good" in this case..
What I want is: if a character at index X is a white space. That means I always have to take first a substring of one character and then do a match. So besides checking for a whitespace, I also take a substring, does that still perform well ??... Besides that: I always understood that object creation should be reduces as much as possible. In this case it always creates more objects... Might it be a good idea to store the pattern in a static field, to overcome unnecessary pattern compilation? So do something like this: private final static Pattern PATTERN_WHITE_SPACE = Pattern.compile("\ \S"); .. ... .. In a helper method: public static boolean matchWhiteSpace(String input) { return PATTERN_WHITE_SPACE.matcher(input).matches(); } --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en -~----------~----~----~----~------~----~------~--~---