Extract values from URls using regular expression

I have the following Pattern

http://abc.com/#!/[0-9a-z]
http://abc.com/#!/search/%2开发者_StackOverflow社区3[^.]

So the first pattern identify the URL of a user and second URL identifies search parameters.

I can check whether the pattern belongs to user or search query using Pattern and Matcher class in Java. How can i extract the values of user or search term?

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You should use capturing group. Look at Java regular expressions: capturing groups for details.