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 = "(.+)(?:[Ss _\\.](\\d{2,})[Ee _\\.](\\d{2,}))[\\. _](\\d{3,4}p)?(.+)?.*?\\-(.+?)(?:\\[(.+)\\])?\\.(\\w+)"; final String string = "Ridiculousness.S07E15.HDTV.x264-TASTETV[eztv].mp4\n" + "Portlandia.S06E03.HDTV.x264-KILLERS[eztv].mp4\n" + "Life.in.Pieces.S01E15.HDTV.x264-KILLERS[eztv].mp4\n" + "Portlandia.S06E03.720p.HDTV.x264-KILLERS[eztv].mkv\n" + "Idiotsitter.S01E04.HDTV.x264-KILLERS[eztv].mp4\n" + "Lip.Sync.Battle.S02E05.720p.HDTV.x264-ALTEREGO[eztv].mkv\n" + "Lip.Sync.Battle.S02E05.HDTV.x264-ALTEREGO[eztv].mp4\n" + "Shades.of.Blue.S01E05.720p.HDTV.x264-AVS[eztv].mkv\n" + "Shades.of.Blue.S01E05.720p.HDTV.x264-FLEET[eztv].mkv\n" + "Colony.S01E04.720p.HDTV.x264-KILLERS[eztv].mkv\n" + "Shades.of.Blue.S01E05.HDTV.x264-FLEET[eztv].mp4\n" + "Baskets.S01E03.INTERNAL.720p.HDTV.x264-KILLERS[eztv].mkv\n" + "Baskets.S01E03.INTERNAL.HDTV.x264-KILLERS[eztv].mp4\n" + "Workaholics.S06E04.720p.HDTV.x264-KILLERS[eztv].mkv\n" + "Baskets.S01E03.HDTV.x264-FLEET[eztv].mp4\n" + "Baskets.S01E03.720p.HDTV.x264-FLEET[eztv].mkv\n" + "The.Blacklist.S03E13.720p.HDTV.x264-AVS[eztv].mkv\n" + "The.100.S03E03.720p.HDTV.x264-AVS[eztv].mkv\n" + "Angel.From.Hell.S01E05.HDTV.x264-LOL[eztv].mp4\n" + "Angel.From.Hell.S01E05.720p.HDTV.X264-DIMENSION[eztv].mkv\n" + "The.100.S03E03.HDTV.x264-FLEET[eztv].mp4\n" + "Mom.S03E10.HDTV.x264-LOL[eztv].mp4\n" + "Mom.S03E10.720p.HDTV.X264-DIMENSION[eztv].mkv\n" + "Life.in.Pieces.S01E15.720p.HDTV.x264-AVS[eztv].mkv\n" + "Elementary.S04E11.HDTV.x264-LOL[eztv].mp4\n" + "Elementary.S04E11.720p.HDTV.X264-DIMENSION[eztv].mkv\n" + "DCs.Legends.of.Tomorrow.S01E03.HDTV.x264-LOL[eztv].mp4\n" + "The.Vampire.Diaries.S07E11.HDTV.x264-LOL[eztv].mp4\n" + "DCs.Legends.of.Tomorrow.S01E03.720p.HDTV.X264-DIMENSION[eztv].mkv\n" + "The.Vampire.Diaries.S07E11.720p.HDTV.X264-DIMENSION[eztv].mkv\n" + "Saving.Hope.S04E16.HDTV.x264-BAJSKORV[eztv].mp4\n" + "Saving.Hope.S04E16.720p.HDTV.x264-BAJSKORV[eztv].mkv\n" + "The.Big.Bang.Theory.S09E14.HDTV.x264-LOL[eztv].mp4\n" + "The.Ellen.DeGeneres.Show.2016.02.04.HDTV.x264-ALTEREGO[eztv].mp4\n" + "The.Ellen.DeGeneres.Show.2016.02.04.720p.HDTV.x264-ALTEREGO[eztv].mkv\n" + "Teachers.2016.S01E04.REPACK.720p.HDTV.x264-ALTEREGO[eztv].mkv\n" + "Celebrity.Big.Brothers.Bit.On.The.Side.S10E24.720p.HDTV.x264-C4TV[eztv].mkv\n" + "Long.Island.Medium.S07E03.HDTV.x264-CRiMSON[eztv].mp4\n" + "Celebrity.Big.Brothers.Bit.On.The.Side.S10E24.HDTV.x264-C4TV[eztv].mp4\n" + "Clarence.US.S02E06.Time.Crimes.720p.HDTV.x264-W4F[eztv].mkv\n" + "Clarence.US.S02E06.Time.Crimes.HDTV.x264-W4F[eztv].mp4\n" + "Clarence.US.S02E05.Ren.Faire.720p.HDTV.x264-W4F[eztv].mkv\n" + "Clarence.US.S02E05.Ren.Faire.HDTV.x264-W4F[eztv].mp4\n" + "Great.British.Railway.Journeys.Series.7.05of20.Ashley.to.Alton.720p.x264.HDTV[eztv].mp4\n" + "Celebrity.Big.Brother.S17E35.HDTV.x264-C4TV[eztv].mp4\n" + "James.Corden.2016.02.03.Rosie.ODonnell.HDTV.x264-TASTETV[eztv].mp4\n" + "James.Corden.2016.02.03.Rosie.ODonnell.720p.HDTV.x264-TASTETV[eztv].mkv\n" + "Mr Robot S01E10 2015 HDTV x264 - SPARKS.wmv"; 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