java.util.regex.Pattern matching the beginning of a String

Posted by Pierre on Stack Overflow See other posts from Stack Overflow or by Pierre
Published on 2010-03-26T21:06:57Z Indexed on 2010/03/26 21:13 UTC
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java

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regex

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regular-expression

Hi all,

Is it possible to know if a stream/string contains an input that could match a regular expression.

For example

 String input="AA";
 Pattern pat=Pattern.compile("AAAAAB");
 Matcher matcher=pat.matcher(input);
 //<-- something here returning true ?

or

 String input="BB";
 Pattern pat=Pattern.compile("AAAAAB");
 Matcher matcher=pat.matcher(input);
 //<-- something here returning false ?

Thanks

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