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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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

/
/
gm

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 = "\\b((?<street>(\\p{L}[ ]?[-.]*)+ [0-9]{1,3}([ ]?[A-Za-z])?))\\b|\\b((?<zipcode>([A-Z-]+)?[0-9]+)[, ](?<city>(\\p{L}[- ]?)+))\\b"; final String string = "Michael Hohmann P.v.-Mallinckrodt-Weg 13a\n" + "Experte für Marketing Automatisierung 33154 Salzkotten\n\n" + " Tel: (0 52 58) 9 90 90-0\n\n\n" + "Dianastraße 1 030 - 40 39 33 33\n" + "13469 Berlin mhugo@stahlsdfsdf.berlin\n\n" + "Dipl.Ing. Arch. Innenraum Großgörschenstrasse 5\n\n" + "10827 Berlin Schöneberg\n\n" + "Geschäftsführer Gubeslstrasse 24\n\n" + "M +41 79 999 99 99 CH-6300 Zug\n\n" + "Friedrichstraße 94\n" + "Telefon +49 30 33333-33333 10117 Berlin\n\n" + "Mobil +49 333 3333333 Lichtenberger Straße 17 a\n\n" + "wilfreid.kroll@sdfsdf.de 10243 Berlin\n\n" + "Unit 13, Le Moulin, Rue de Bali\n" + "Pereybére 99999, Mauritius\n\n" + "Wolfgang Leobner Unterer Grund 10\n" + "Ressavarstraße 45, A-9384 Hartberg\n\n" + "General Manager Horbeller Straße 33\n\n" + "Poppelsdorfer Allee 89\n" + "93828 Bonn\n\n" + "Carl-Benz-Straße 13\n" + "D-82937 Schweinfurt\n\n" + "Luisenstraße 33 | 93720 Bad Dürrheim\n\n" + "Schwändi 7 * 8486 Rikon\n\n" + "Bogener Straße 8 94827 Neukirchen\n\n" + "93939 Neuötting\n\n" + "83927 Mannheim-Schönau\n\n" + "Wörrst Straße 3\n\n" + "Türrschmidtstr. 2a\n\n" + "Lambertusweg 2\n\n" + "Lerchenweg 4 \n\n" + "D-29304 Eching am Ammersee\n\n" + "Schönbuchstr. 34\n\n" + "Neuenhofer Str. 7\n\n" + "Meinekeestr. 26, 29304 Berlin\n\n" + "Carmenstraße 17 - 18\n\n" + "13432 Werder (Havel)\n\n" + "Lenelshof 1 99930 Ratingen\n\n" + "Rothenbasdfchaussee 80c\n\n" + "Poller Kirchweg 990\n" + "Poller Kirchweg 9903\n\n" + "Weilstetter Weg 34B\n\n" + "Gartenstraße 88U Fax: 93 (0) 33333 - 33333\n\n" + "09392 Crottendorf Email: info@sdfsdf.de\n\n" + "hauptstr.51\n\n" + "Pantelsdfs Str. 33, A-3929 St. Pantaleon, Austria\n\n" + "D - 88889 Dreieich\n\n" + "Bahnhofstr. 77 93000 Kornewestheim Tel. 929293-39392\n\n" + "Friedrichstraße 180 - 39302 Berlin\n\n" + "Kupferteichweg 39 44444 Hamburg\n\n" + "HEP Immobilien GmbH - Willicher Straße 1 - 33333 Willich\n\n" + "Rosengasse 19\n" + "A-3456 Groß Enzersdorf\n\n" + "Karsten Poppe Neue Straße 22\n" + "Finanz-/Versicherungmakler 33333 Wildeshausen\n\n"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE); 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