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

/
/
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 = "(?i)^(01|04|21|31)(\\d{10})?(\\d{1}>)(\\d{16,27})\\+\\s+(\\d{5,9})>"; final String string = "0100003949753>210000000003139471430009017+ 010001628>\n" + "0100000023651>000551106208600215460130935+ 010058907>\n" + "2100000440001>961116900000006600000009284+ 030001625>\n" + "042>000000676817431677100399580+ 010107280>\n" + "319>961116900000006600000009284+ 030001625>\n\n" + "Absichtliche Fehler;\n" + "-0100003949753>210000000003139471430009017+ 010001628>\n" + "0100-000023651>000551106208600215460130935+ 010058907>\n" + "2100000440001>9611169000000006600000009284+ 030001625>\n" + "042>00000067681743167710.0399580+ 010107280>\n" + "319>961116900000006600000009284+ 030001.625>\n" + " 0100003949753>210000000003139471430009017+ 010001628>\n\n\n\n" + "#1: ESR 9/27, CHF 3949.75, Ref 210000000003139471430009017, Tn 010001628 (01-162-8)\n" + "#2: ESR 9/27, CHF 23.65, Ref 000551106208600215460130935, Tn 010058907 (01-5890-7)\n" + "#3: ESR 9/27, EUR 440.00, Ref 961116900000006600000009284, Tn 030001625 (03-162-5)\n" + "#4: ESR+ 9/27+ CHF ?? Ref 000000676817431677100399580, Tn 010107280 (01-10728-0)\n" + "#5: ESR+ 9/27+ EUR ??.?? Ref 961116900000006600000009284, Tn 030001625 (03-162-5)\n\n\n" + "ESR oder ESR+\n\n" + "Gruppe1:\n" + "01 = ESR in CHF\n" + "04 = ESR+ in CHF\n" + "21 = ESR in EUR\n" + "31 = ESR+ in EUR\n" + "Nicht beachtet:\n" + "11 = ESR in CHF zur Gutschrift auf das eigene Konto\n" + "14 = ESR+ in CHF zur Gutschrift auf das eigene Konto\n" + "23 = ESR in EUR zur Gutschrift auf das eigene Konto\n" + "33 = ESR+ in EUR zur Gutschrift auf das eigene Konto\n\n" + "Gruppe2: Betrag (bei ESR+ nicht vorhanden/leer)\n" + "Gruppe3: Prüfcode\n" + "Gruppe4: Referenznummer\n" + "Gruppe5: Kundennummer \n" + "VVXXXXXXP> VV = ESR-Code, XXXXXX = Ordnungsnummer (inkl. vorlaufende Nullen), P = Prüfziffer\n\n\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