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

Substitution

Processing...

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 = "EN Normen: EN Normen\n" + "Schuhtyp: FUS Schuhtyp\n" + "Schuhform: FUS Schuhform\n" + "Verschlussart: FUS Verschlussart\n" + "Verschlusselement: FUS Verschluss\n" + "Größe: Größe Von - Größe bis\n" + "Größenbereich: Größenbereich\n" + "Passform: v FUS Passform\n" + "Schuhweite: v FUS Schuhweite\n" + "Schafthöhe: v FUS Schafthöhe CM\n" + "Farbe: v Farbe list\n" + "Farbcode: v Farbcode\n" + "Obermaterial: FUS Obermaterial\n" + "Obermaterial sonstige: FUS Obermaterial Sonstige\n" + "Lederausprägung: FUS Lederausprägung\n" + "Innenfutter: FUS Innenfutter\n" + "Innenfutter sonstige: FUS Innenfutter Sonstige\n" + "Blattfutter: FUS Blattfutter\n" + "Quartierfutter: FUS Quartierfutter\n" + "Fersenfutter: FUS Fersenfutter\n" + "Schaftrand: FUS Schaftrand\n" + "Lasche: FUS Lasche\n" + "Lasche sonstige: FUS Lasche Sonstige\n" + "Zehenschutzkappe: FUS Zehenschutzkappe\n" + "Verstärkungen: FUS Pikto2\n" + "Schuhkappe: FUS Schuhkappe\n" + "Einlegesohle: FUS Einlegesohle\n" + "Einlegesohle sonstige: FUS Einlegesohle Sonstige\n" + "Zwischensohle: FUS Zwischensohle\n" + "Zwischensohle sonstige: FUS Zwischensohle Sonstige\n" + "Brandsohle: FUS Brandsohle\n" + "Laufsohle: FUS Laufsohle\n" + "Ausstattung: Ausstattung\n" + "Geeigneter Untergrund: FUS Geeigneter Untergrund\n" + "Sicherheitsschuhklasse: FUS Sicherheitsklassen\n" + "Schutzschuh Klasse: FUS Schutzklasse\n" + "Berufsschuh Klasse: FUS Berufsschuhklasse"; final String subst = "\\2"; final Pattern pattern = Pattern.compile(regex); final Matcher matcher = pattern.matcher(string); // The substituted value will be contained in the result variable final String result = matcher.replaceAll(subst); System.out.println("Substitution result: " + result); } }

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