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

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)(?m)(?<![a-z]|\\.|\\.\\d)(?:\\d{1,4})(?:[.,\\s]\\d{3})*(?:[.,]\\d{2})(?!\\%|\\d|\\.|\\s\\.|\\scm|cm|pol|\\spol)"; final String string = "TICKET RESTAURANT DE PORTUGAL,\n" + "Infante Santo,\n" + "1350—177 Lisboa\n\n" + "S.A.\n\n" + "AV. 23 A/D\n\n" + "NIF e MAT.:\n" + "Cap.\n\n" + "500423849\n\n" + "Soc. 500.000 Euros\n\n" + "Z43\n\n" + "CDUCket\n\n" + ";fensmoº\n\n" + "000370.19\n\n" + "FAS—SISTEMAS DE INFORMACAO LDA\n\n" + "TAGUS PARK\n\n" + "EDIFICIO QUALIDADE B2-1B\n\n" + "2740—120 PORTO SALVO\n\n" + " \n\n" + " \n\n" + " \n\n" + " \n\n" + " \n\n" + " \n\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "r\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "W\n" + "[\n\n" + " \n\n" + " \n\n" + " \n\n" + " \n\n" + " \n\n" + " \n\n" + "fwj+—Processado por programa certificado n.\n\n" + ". ticket\n\n" + "SEFVIÇOS Delegação Nºrte\n\n" + "R. das Cardosas, 1495\n" + "4425 - 510 S.Pedro Fins Maia\n\n" + "Delegação Sul\n\n" + "Av. Infante Santo, 21 A\n\n" + "1350-177 Lisboa\n\n" + "Tel. 210 420 325 - Fax. 210 420 365\n\n" + "Hcket©tkketpt\n" + "Hcketpt\n\n" + "Pagamento por transferencia bancaria:\n" + "IBAN: PT50 0079 0000 64938339101 80\n\n" + "Delegação Centro\n\n" + "R. Álvaro Pires de Miranda,\n" + "Lt. 46 ,1.º Dto. A ' 2415-369 Leiria\n" + "Tel. 228 302 900 ' Fax. 228 302 904 Tel. 244 826 378 ' Fax. 244 823 689\n\n" + "2292/AT\n\n" + "W V/REQUISIÇÃO V/Nº CONTRIBUINTE Nº CLIE_NTE W DATA W\n" + "WI \"\"\" 777 “ª\" ' W ORIGINAL DA ;\n" + "W WPT 502524588 EET 000370W 2017— 05- 03 FACTURA FET 17/1208\n" + "TICKET ENSINO fornecidos: , , W\n" + "% QUANHDADE ; VALORUNnAmo W VALORTOTAL\n" + "Emissão Ticket Ult. Ticket Cod. Produto « W\n" + "17002775 00015396 00015397 105.00/ET W 2W 105.00W 210.00\n" + "17002776 00015398 00015400 140.00/ET W 3; 140.00W 420.00\n" + "W W\n" + "W ? W\n" + "W * W\n" + "., W\n" + "W W W\n" + "W W\n" + "1 W W\n" + "W . í\n" + "W IVA ISENTO — Alineas &) e c) . 27 Artigo 9 W 5 W SUB-TOTAL * 630 . OOW (*)\n" + "L “2__ W W _“ “__mw ___-“ _, \"I\n" + "W wannn CWAEWKO 6.50% 23% TOTAL€\n" + "& Euros 630.00 40.95 .42 680.37\n" + "& Euros 630.00 40.95 9.42 680.37\n" + "288.890.234,23\n" + "SEISCENTOS E OITENTA EUROS E TRINTA E SETE CENTIMOS ****************\n" + "********************************************************************\n\n" + "SWIFT/BIC: BPNPPTPL\n\n" + "at\n\n" + "Delegação Madeira\n\n" + "Calçada de São Lourenço, nº 3, 2 C\n" + "9000-061 Funchal\n\n" + "Tel. 291 225 727 ' Fax. 291 230 694\n"; final Pattern pattern = Pattern.compile(regex); 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