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

r"
"
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 = "\\d*((\\s)?(m²|m|M)) de bureaux?|bureaux? d'une surface de \\d*((\\s)?(m²|m|M))|bureaux? de \\d*((\\s)?(m²|m|M))"; final String string = "REGEX_1 =(avec|(partie|à usage|compos[ée]) de|(possibilit[eé]|zone|espace)(\\sde)?) bureaux?\n\n" + "REGEX_2 =\\d*((\\s)?(m²|m|M)) de bureaux?|bureaux? d'une surface de \\d*((\\s)?(m²|m|M))|bureaux? de \\d*((\\s)?(m²|m|M))\n\n" + "REGEX_3 =bureaux? (à l'[eé]tage|[ée]quip[ée]s?|cloisonn[ée]s)\n\n" + "REGEX_2NOT = \n" + "(proche de bureaux?| \n" + "bureaux? proche|\n" + "bureaux? [àa] proximit[eé]| \n" + "[àa] proximit[eé] de bureaux?)\n\n" + "[EXEMPLE]\n" + "avec bureau\n" + "à usage de bureaux\n" + "composé de bureau\n" + "d'activites & bureaux\n" + "activités/bureaux \n" + "une partie de bureau\n" + "et bureau\n" + "et de bureau \n" + "12m² de bureaux\n" + "de bureaux de 12m²\n" + "bureaux d'une surface de 12m²\n" + "bureaux à l'étage\n" + "bureaux équipés\n" + "zone bureau\n" + "bureaux cloisonnés\n" + "possibilité de bureau\n" + "espace bureau\n\n\n\n" + "[NE PAS TENIR COMPTE]\n" + "bureaux proche\n" + "bureaux à proximité \n" + "à proximité de bureau"; 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