Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

r"
"
x

Test String

Code Generator

Language

Generated Code

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String[] args) { final String regex = "<div\\sclass=\"row\">\\s<div\\sclass=\"col-xs-12\">\\s<div\\sclass=\"all_seasons\">\\s<div\\sclass=\"episodes_left\\scol-xs-6\\spull-left\">\\s((.|\\n)*)<br>(?:(</div>|\\s)*?)"; final String string = "<div class=\"row\">\n" + "<div class=\"col-xs-12\">\n" + "<div class=\"all_seasons\">\n" + "<div class=\"episodes_left col-xs-6 pull-left\">\n" + "<a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e32'>Last Week Tonight With John Oliver S02E32 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e31'>Last Week Tonight With John Oliver S02E31 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e30'>Last Week Tonight With John Oliver S02E30 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e29'>Last Week Tonight With John Oliver S02E29 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e28'>Last Week Tonight With John Oliver S02E28 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e27'>Last Week Tonight With John Oliver S02E27 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e25-church'>Last Week Tonight With John Oliver S02E25 &#8211; Church </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e24-season-2-episode-24'>Last Week Tonight With John Oliver S02E24 &#8211; Season 2, Episode 24 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e23-season-2-episode-23'>Last Week Tonight With John Oliver S02E23 &#8211; Season 2, Episode 23 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e23-season-2-episode-23-720p'>Last Week Tonight With John Oliver S02E23 &#8211; Season 2, Episode 23 720p </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e22-season-2-episode-22-720p'>Last Week Tonight With John Oliver S02E22 &#8211; Season 2, Episode 22 720p </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e22-season-2-episode-22'>Last Week Tonight With John Oliver S02E22 &#8211; Season 2, Episode 22 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e21-season-2-episode-21'>Last Week Tonight With John Oliver S02E21 &#8211; Season 2, Episode 21 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e21-season-2-episode-21-720p'>Last Week Tonight With John Oliver S02E21 &#8211; Season 2, Episode 21 720p </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e20-season-2-episode-20'>Last Week Tonight With John Oliver S02E20 &#8211; Season 2, Episode 20 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e20-season-2-episode-20-720p'>Last Week Tonight With John Oliver S02E20 &#8211; Season 2, Episode 20 720p </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e19-season-2-episode-19-720p'>Last Week Tonight With John Oliver S02E19 &#8211; Season 2, Episode 19 720p </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e19-season-2-episode-19'>Last Week Tonight With John Oliver S02E19 &#8211; Season 2, Episode 19 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e18-season-2-episode-18-720p'>Last Week Tonight With John Oliver S02E18 &#8211; Season 2, Episode 18 720p </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e18-season-2-episode-18'>Last Week Tonight With John Oliver S02E18 &#8211; Season 2, Episode 18 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e17-season-2-episode-17'>Last Week Tonight With John Oliver S02E17 &#8211; Season 2, Episode 17 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e17-season-2-episode-17-720p'>Last Week Tonight With John Oliver S02E17 &#8211; Season 2, Episode 17 720p </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e16-season-2-episode-16'>Last Week Tonight With John Oliver S02E16 &#8211; Season 2, Episode 16 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e16-season-2-episode-16-720p'>Last Week Tonight With John Oliver S02E16 &#8211; Season 2, Episode 16 720p </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e15-season-2-episode-15'>Last Week Tonight With John Oliver S02E15 &#8211; Season 2, Episode 15 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e15-season-2-episode-15-720p'>Last Week Tonight With John Oliver S02E15 &#8211; Season 2, Episode 15 720p </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e14-season-2-episode-14'>Last Week Tonight With John Oliver S02E14 &#8211; Season 2, Episode 14 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e13-season-2-episode-13'>Last Week Tonight With John Oliver S02E13 &#8211; Season 2, Episode 13 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e13-season-2-episode-13-720p'>Last Week Tonight With John Oliver S02E13 &#8211; Season 2, Episode 13 720p </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e12-season-2-episode-12'>Last Week Tonight With John Oliver S02E12 &#8211; Season 2, Episode 12 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e11-season-2-episode-11'>Last Week Tonight With John Oliver S02E11 &#8211; Season 2, Episode 11 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e10-season-2-episode-10'>Last Week Tonight With John Oliver S02E10 &#8211; Season 2, Episode 10 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e09-season-2-episode-9'>Last Week Tonight With John Oliver S02E09 &#8211; Season 2, Episode 9 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e08-season-2-episode-8'>Last Week Tonight With John Oliver S02E08 &#8211; Season 2, Episode 8 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e07-season-2-episode-7'>Last Week Tonight With John Oliver S02E07 &#8211; Season 2, Episode 7 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e05-season-2-episode-5'>Last Week Tonight With John Oliver S02E05 &#8211; Season 2, Episode 5 </a>\n" + "<br></div><div class='col-xs-6 pull-right'> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e04-season-2-episode-4'>Last Week Tonight With John Oliver S02E04 &#8211; Season 2, Episode 4 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-with-john-oliver-s02e03-season-2-episode-3'>Last Week Tonight With John Oliver S02E03 &#8211; Season 2, Episode 3 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-john-oliver-s02e02-season-2-episode-2'>Last Week Tonight With John Oliver S02E02 &#8211; Season 2, Episode 2 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-john-oliver-s02e01-season-2-episode-1'>Last Week Tonight With John Oliver S02E01 &#8211; Season 2, Episode 1 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-john-oliver-s01e24'>Last Week Tonight With John Oliver S01E24 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-john-oliver-s01e23'>Last Week Tonight With John Oliver S01E23 </a>\n" + "<br> <a href='http://watchseries-online.li/episode/last-week-tonight-john-oliver-s01e22'>Last Week Tonight With John Oliver S01E22 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/10/last-week-tonight-with-john-oliver-s01e21'>Last Week Tonight With John Oliver S01E21 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/10/last-week-tonight-with-john-oliver-s01e20'>Last Week Tonight With John Oliver S01E20 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/09/last-week-tonight-with-john-oliver-s01e19'>Last Week Tonight With John Oliver S01E19 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/09/last-week-tonight-with-john-oliver-s01e18'>Last Week Tonight With John Oliver S01E18 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/09/last-week-tonight-with-john-oliver-s01e17'>Last Week Tonight With John Oliver S01E17 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/09/last-week-tonight-with-john-oliver-s01e16'>Last Week Tonight With John Oliver S01E16 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/08/last-week-tonight-with-john-oliver-s01e15'>Last Week Tonight With John Oliver S01E15 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/08/last-week-tonight-with-john-oliver-2014-08-10'>Last Week Tonight With John Oliver (2014 08 10) </a>\n" + "<br> <a href='http://watchseries-online.li/2014/08/last-week-tonight-with-john-oliver-s01e13'>Last Week Tonight With John Oliver S01E13 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/07/last-week-tonight-with-john-oliver-2014-07-27'>Last Week Tonight With John Oliver (2014 07 27) </a>\n" + "<br> <a href='http://watchseries-online.li/2014/07/last-week-tonight-with-john-oliver-2014-07-27-readnfo'>Last Week Tonight With John Oliver (2014 07 27) Readnfo </a>\n" + "<br> <a href='http://watchseries-online.li/2014/07/last-week-tonight-with-john-oliver-s01e11'>Last Week Tonight With John Oliver S01E11 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/07/last-week-tonight-with-john-oliver-s01e10'>Last Week Tonight With John Oliver S01E10 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/06/last-week-tonight-with-john-oliver-s01e09'>Last Week Tonight With John Oliver S01E09 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/06/last-week-tonight-with-john-oliver-s01e08'>Last Week Tonight With John Oliver S01E08 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/06/last-week-tonight-with-john-oliver-s01e07'>Last Week Tonight With John Oliver S01E07 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/06/last-week-tonight-with-john-oliver-s01e06-real-wso-ch'>Last Week Tonight With John Oliver S01E06 Real wso-ch </a>\n" + "<br> <a href='http://watchseries-online.li/2014/06/last-week-tonight-with-john-oliver-s01e06'>Last Week Tonight With John Oliver S01E06 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/05/last-week-tonight-with-john-oliver-2014-05-18-repack'>Last Week Tonight With John Oliver (2014 05 18) Repack </a>\n" + "<br> <a href='http://watchseries-online.li/2014/05/last-week-tonight-with-john-oliver-2014-05-18'>Last Week Tonight With John Oliver (2014 05 18) </a>\n" + "<br> <a href='http://watchseries-online.li/2014/05/last-week-tonight-with-john-oliver-2014-05-11-2'>Last Week Tonight With John Oliver (2014 05 11) </a>\n" + "<br> <a href='http://watchseries-online.li/2014/05/last-week-tonight-with-john-oliver-2014-05-11'>Last Week Tonight With John Oliver (2014 05 11) </a>\n" + "<br> <a href='http://watchseries-online.li/2014/05/last-week-tonight-with-john-oliver-s01e02'>Last Week Tonight With John Oliver S01E02 </a>\n" + "<br> <a href='http://watchseries-online.li/2014/04/last-week-tonight-with-john-oliver-s01e01'>Last Week Tonight With John Oliver S01E01 </a>\n" + "<br> </div>\n" + "</div>\n" + "</div>\n" + "</div> \n" + "</div> \n" + "</div>"; final Pattern pattern = Pattern.compile(regex, Pattern.COMMENTS); final Matcher matcher = pattern.matcher(string); if (matcher.find()) { System.out.println("Full match: " + matcher.group(0)); for (int i = 1; i <= matcher.groupCount(); i++) { System.out.println("Group " + i + ": " + matcher.group(i)); } } } }

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html