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 single character of: a, b, c or d
    [[ab][cd]]
  • 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]
  • Character class intersection
    [\w&&[^\d]]
  • 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"
"
gms

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 = "^---$((.)*)^---$"; final String string = "---\n" + "Created: 20.07.2023\n" + "Tags: #kleiderschrank, #golf\n" + "---\n\n" + "# Kleiderschrank | Golf\n\n" + "## Polos kurz schwarz (#polo)\n" + "2018-11 | 2 x Under Armour Herren Performance Poloshirt, Schwarz, XL\n" + "0000-00 | Nike Polos Standard FIT XL black\n" + "0000-00 | AIRBUS Bremen XL black\n" + "2018-05 | Golfino Poloshirt kurz grün\n" + "2018-05 | Golfino Poloshirt kurz türkis\n" + "2016-07 | 4 x Decathlon Polos\n" + "0000-00 | Adidas Polo XL hellgrau\n" + "0000-00 | Adidas Polo L signalrot\n" + "0000-00 | Adidas Polo L signalrot\n\n" + "## Polos lang\n" + "2019-04 | Golfino Poloshirt lang\n\n" + "## Pullover (#pullover)\n" + "0000-00 | Decathlon Fleece XL hellgrau\n" + "0000-00 | Decathlon Fleece XL blau\n\n" + "## Windshields (#windshields)\n\n" + "2019-04 | Nike Herren-Golfjacke mit Synthetikfüllung XL Schwarz\n" + "2019-04 | Golfino Thermo Jacke gesteppt schwarz 56\n" + "2017-06 | Golfino Windshield Fleece Jacke black\n" + "0000-00 | Golfino Shell dunkelbau\n" + "2017-06 | Golfino ThermoShirt 1/2 Zip blau 54\n" + "0000-00 | Golfino Jacke schwarz\n\n" + "## Rain Shirts (#rainshirts)\n\n" + "0000-00 | FootJoy Hydrolite Rainshirt XL black\n" + "2015-09 | Under Armour Herren Golf Pullover Crestable Elements 1/2 Zip, Black, XL\n\n" + "## Westen (#westen)\n\n" + "2018-05 | Golfino Mikrofaser Weste Navy\n" + "2019-04 | Golfino Weste gesteppt schwarz 56\n\n" + "## Zipper lang (#zipper)\n" + "2018-05 | Golfino Troyer Zip schwarz lang\n" + "2018-05 | Golfino Troyer Zip blau lang\n" + "2018-05 | Golfino Troyer Zip grün lang\n" + "2018-05 | Golfino Troyer Zip rot lang\n" + "2018-05 | Golfino Troyer Zip rot lang\n\n" + "## Hosen (#hosen)\n" + "0000-00 | Golfino 54 schwarz\n" + "0000-00 | Alberto chino 54 schwarz\n" + "0000-00 | Adidas blau 32/34\n\n" + "## Schuhe\n" + "2018-08 | FootJoy Golfschuhe Contour Casual 45 braun\n" + "2018-08 | FootJoy Golfschuhe Contour Fit 45 schwarz\n" + "2015-09 | Nike\n\n"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.DOTALL); 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