Getting the text that follows after the regex match

Question

I m new to using Regex  I ve been going through a rake of tutorials but I haven t found one that applies to what I want to do   I want to search for something  but return everything following it but not the search string itself  e g   Some lame sentence that is awesome   search for  sentence   return  that is awesome   Any help would be much appreciated  This is my regex so far  sentence        but it returns  sentence that is awesome  Pattern pattern   Pattern compile  sentence         Matcher matcher   pattern matcher  some lame sentence that is awesome     boolean found   false  while  matcher find          System out println  I found the text      matcher group   toString         found   true    if   found        System out println  I didn t find the text

User · Answer

Your regex  sentence      is right  To retrieve the contents of the group in parenthesis  you would call   Pattern p   Pattern compile   sentence         Matcher m   p matcher   some lame sentence that is awesome     if   m find          String s   m group 1        that is awesome      Note the use of m find   in this case  attempts to find anywhere on the string  and not m matches    would fail because of the prefix  some lame   in this case the regex would need to be    sentence

User · Answer

You need to use the group int  of your matcher - group 0  is the entire match  and group 1  is the first group you marked  In the example you specify  group 1  is what comes after  sentence

User · Answer

You can do this with  just the regular expression  as you asked for in a comment      lt  sentence         lt  sentence  is a positive lookbehind assertion  This matches at a certain position in the string  namely at a position right after the text sentence without making that text itself part of the match  Consequently     lt  sentence    will match any text after sentence   This is quite a nice feature of regex  However  in Java this will only work for finite-length subexpressions  i  e     lt  sentence word  foo  1 4   is legal  but    lt  sentence s   isn t

User · Answer

You just need to put  group 1   instead of  group    in the following line and the return will be the one you expected   System out println  I found the text      matcher group   1    toString

User · Answer

if Matcher is initialized with str  after the match  you can get the part after the match with   str substring matcher end      Sample Code   final String str    Some lame sentence that is awesome   final Matcher matcher   Pattern compile  sentence   matcher str   if matcher find         System out println str substring matcher end    trim         Output      that is awesome

[java] Getting the text that follows after the regex match

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