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

/
/
imgu

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 = "^(?<streetName>.*?)(\\s((nr|n|no)\\.?\\s*)?(?<houseNumber>[1-9][0-9]*)(\\s*[-\\/]\\s*(?<houseNumberTo>[1-9][0-9]*))?([\\s-\\/]*(?<houseLetter>[a-z]))?([\\s\\-]+(?<houseNumberAddition>[a-z1-9][a-z0-9\\/]*[a-z]+))?)?$"; final String string = "Geldersekade 5\n" + "Prins Hendrikkade 94-95\n" + "Zeedijk 39 a\n" + "Prins Hendrikkade 85\n" + "Kromme Waal 24 t/o\n" + "Oude Waal 26 sous\n" + "Recht Boomssloot 50-b\n" + "Oudeschans 5a\n" + "Blaak 5a\n" + "çstraét 12\n" + "Æbçøüdéstrāßè 12\n" + "binnenbantammer straat n.2\n" + "Oudezijds Voorburgwal 36-HS\n" + "De Ruijterkade 105 1S\n" + "De Ruijterkade 110H\n" + "Prins Hendrikkade 133 3A\n" + "Plein 1818 2a\n" + "Scheveningseveer 21\n" + "De Stelling 15 11\n" + "Plein ’40-’45 nr. 9\n" + "Burg.de Vlugtlaan 139\n" + "Plein ‘40-’45 6\n" + "Plein 18 1\n" + "Plein 1953 2\n" + "Plein 1953 28\n" + "Plein 1337 4-c\n" + "Plein 1337 4 1d\n" + "Regulieersdwarsstraat 5-1\n" + "Regulieersdwarsstraat 5-1c\n" + "Regulieersdwarsstraat 5 1x\n" + "Rechte boom straat 5001 33\n" + "Plein 2001 22-44\n" + "Plein1234 4\n" + "Hesseplaats 53\n" + "1e middellandstraat 12\n" + "Prins Hendrikkade 4/A\n" + "Langerakplein 22/44 \n" + "Roer 266\n" + "3 Spinel\n" + "Roer\n"; final Pattern pattern = Pattern.compile(regex, Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.UNICODE_CASE); 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