Java regular expression to match _all_ whitespace characters

Question

I\'m looking for a regular expression in Java which matches all whitespace characters in a String. \"\\s\" matches only some, it does not match   and s

Answer 1

Here's a summary I made of several competing definitions of "whitespace":

http://spreadsheets.google.com/pub?key=pd8dAQyHbdewRsnE5x5GzKQ

You might end up having to explicitly list the additional ones you care about that aren't matched by one of the prefab ones.