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
Processing...

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 = "Seat (?P<playerseat>[0-9]+): (?P<playername>[.?]+)"; final String string = "he name of first value, first 17/04/2013 11:30:00 - A:30.0\n\n" + "PokerStars Hand #152844641611: Tournament #1556870024, $0.44+$0.44+$0.12 USD Hold'em No Limit - Level I (25/50) - 2016/05/04 13:15:07 BRT [2016/05/04 12:15:07 ET]\n" + "Table '1556870024 3' 6-max Seat #1 is the button\n" + "Seat 1: vitalijus (500 in chips) \n" + "Seat 2: papoca555 (500 in chips) \n" + "Seat 3: SITBACKNOW (500 in chips) \n" + "Seat 4: hackerpex (500 in chips) \n" + "Seat 5: vovan189 (500 in chips) \n" + "Seat 6: DiMers80 (500 in chips) \n" + "vitalijus: posts the ante 10\n" + "papoca555: posts the ante 10\n" + "SITBACKNOW: posts the ante 10\n" + "hackerpex: posts the ante 10\n" + "vovan189: posts the ante 10 \n" + "DiMers80: posts the ante 10\n" + "papoca555: posts small blind 25\n" + "SITBACKNOW: posts big blind 50\n" + "*** HOLE CARDS ***\n" + "Dealt to hackerpex [7h 6h]\n" + "hackerpex: folds \n" + "vovan189: calls 50\n" + "DiMers80: raises 440 to 490 and is all-in\n" + "vitalijus: folds \n" + "papoca555: folds \n" + "SITBACKNOW: calls 440 and is all-in\n" + "vovan189: calls 440 and is all-in\n" + "*** FLOP *** [5c 2c 3s]\n" + "*** TURN *** [5c 2c 3s] [Ah]\n" + "*** RIVER *** [5c 2c 3s Ah] [4s]\n" + "*** SHOW DOWN ***\n" + "SITBACKNOW: shows [Ks Tc] (a straight, Ace to Five)\n" + "vovan189: shows [6d As] (a straight, Deuce to Six)\n" + "DiMers80: shows [Kc Th] (a straight, Ace to Five)\n" + "vovan189 collected 1555 from pot\n" + "vovan189 wins the $0.44 bounty for eliminating SITBACKNOW\n" + "vovan189 wins the $0.44 bounty for eliminating DiMers80\n" + "SITBACKNOW finished the tournament in 35th place\n" + "DiMers80 finished the tournament in 35th place\n" + "*** SUMMARY ***\n" + "Total pot 1555 | Rake 0 \n" + "Board [5c 2c 3s Ah 4s]\n" + "Seat 1: vitalijus (button) folded before Flop (didn't bet)\n" + "Seat 2: papoca555 (small blind) folded before Flop\n" + "Seat 3: SITBACKNOW (big blind) showed [Ks Tc] and lost with a straight, Ace to Five\n" + "Seat 4: hackerpex folded before Flop (didn't bet)\n" + "Seat 5: vovan189 showed [6d As] and won (1555) with a straight, Deuce to Six\n" + "Seat 6: DiMers80 showed [Kc Th] and lost with a straight, Ace to Five\n" + "PokerStars Hand #152844655854: Tournament #1556870024, $0.44+$0.44+$0.12 USD Hold'em No Limit - Level I (25/50) - 2016/05/04 13:15:28 BRT [2016/05/04 12:15:28 ET]\n" + "Table '1556870024 3' 6-max Seat #2 is the button\n" + "Seat 1: vitalijus (490 in chips) \n" + "Seat 2: papoca555 (465 in chips) \n" + "Seat 4: hackerpex (490 in chips) \n" + "Seat 5: vovan189 (1555 in chips) \n" + "vitalijus: posts the ante 10\n" + "papoca555: posts the ante 10\n" + "hackerpex: posts the ante 10\n" + "vovan189: posts the ante 10\n" + "hackerpex: posts small blind 25\n" + "vovan189: posts big blind 50\n" + "*** HOLE CARDS ***\n" + "Dealt to hackerpex [Jd Ad]"; final Pattern pattern = Pattern.compile(regex); final Matcher matcher = pattern.matcher(string); while (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