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

/
/
g

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 = "(?<Fname>.*\\.)(S(?<se>\\d{1,2})E(?<ep>\\d{2,3}).*|(?<season>S\\d{1,2}-S\\d{2,3}).*|(?<yr>\\d{4}[^p]).*)"; final String string = "Westworld.S04E05.720p.WEB.h264-KOGi[rarbg]\n" + "Westworld.S04E04.1080p.WEB.H264-CAKES[rarbg]\n" + "For.All.Mankind.S03E08.720p.WEB.h264-KOGi[rarbg]\n" + "Talk.to.Me.2022.1080p.WEBRip.DD5.1.x264-LAMA\n" + "Jules.2023.1080p.AMZN.WEBRip.DD5.1.x264-LAMA\n" + "90.Day.Fiance.UK.S02E12.1080p.HEVC.x265-MeGusta\n" + "Inside.Job.S01-S02.WEBRip.1080p.AAC5.1.x265-SiQ\n" + "Til Death Do Us Part 2023 1080p AMZN WEBRip DD5 1 x264-LAMA\n" + "UFC.Fight.Night.227.Grasso.vs.Shevchenko.2.WEB-DL.H264.Fight-BB[TGx]\n\n\n" + "mIRC does not allow you to retrieve the full match. You can access simple captures but *you cannot access named capture* Well dam, now what?\n\n" + "***Work in progress***\n" + "$replace($1-,$chr(32),$chr(46))\n\n" + ";mIRC Alias to test\n" + "alias test1 {\n" + " ;TV\n" + " ;var %s Westworld.S04E05.720p.WEB.h264-KOGi[rarbg]\n\n" + " ;TV Series\n" + " ;var %s Inside.Job.S01-S02.WEBRip.1080p.AAC5.1.x265-SiQ\n\n" + " ;Movie\n" + " var %s A.Million.Miles.Away.2023.1080p.AMZN.WEBRip.DD5.1.x264-LAMA\n\n" + " noop $regex(name, %s,/(?<Fname>.*\\.)(S(?<se>\\d{1,2})E(?<ep>\\d{2,3}).*|(?<season>S\\d{1,2}-S\\d{2,3}).*|(?<yr>\\d{4}[^p]).*)/g)\n" + " if ($len($regml(name,3)) == 5) { Echo -a Movie: Fn: $regml(name,1) Year: $regml(name,3) | halt }\n" + " if (-s isin %s) { Echo -a Series: Fn: $regml(name,1) S: $regml(name,3) }\n" + " else echo -a TV: Fn: $regml(name,1) S: $regml(name,3) EP: $regml(name,4)\n" + "}\n\n" + ";mIRC 7zip stuff\n" + "var %eDir $getdir(.tar)\n" + "var %oDir $getdir_Movies\n" + " /run -np \"c:\\Program files\\7-Zip\\7z.exe\" e -aos \" $+ %eDir $+ %s $+ \" *.avi *.mkv *.mp4 -r -o $+ \" $+ %oDir $+ \""; 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