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 = "(?<=\\n)[A-Za-z ]{4,44}\\s(\\d{3}|\\d{1}\\w{2})"; final String string = "ROBERTO S.R.L. \n" + "Automotive Aftermarket\n" + "Roberto S.R.L., Str. Horia Macelariu nr. 30-34, RO-013937 Bucuresti\n" + "Capitalul Social: 169.363.000 Lei, Nr. Ord. Reg. com.: J40/7601/1994 \n" + " \n" + "Citibank Europe Plc Dublin, Romania Branch Citibank Europe Plc Dublin, Bulgaria Branch \n" + "SWIFT CODE: CITIROBU SWIFT CODE: CITIBGSF \n" + "IBAN RON: RO45 CITI 0000 0007 2488 3001 IBAN BGN: BG54 CITI 9250 1001 0086 00 \n" + "IBAN EURO: RO48 CITI 0000 0007 2488 3044\n" + "Invoice 1/ 2\n" + "Document No.: 2045175575\n" + "Date: 09.01.2023\n" + "Sold To party: 22222222\n" + "Account No.: 22222222\n" + "ALFREDO GIOACCHINO OOD \n" + "ul. Andrey Germanov 11 \n" + "BG-1336 MILANO\n" + "Your VAT No.: BG175423111\n" + "Our VAT No.: RO5541546\n" + "Contact Person Finance: VALENTINA IVANOVA\n" + "Phone: +35929601062\n" + "E-mail: Valentina.Ivanova@bg.rocco.com\n" + "Contacts: DIANA DOBREVA\n" + "Phone: 878668802\n" + "E-mail: external.Diana.Dobreva@bg.rocco.com\n" + "Sold To Address: ALFREDO GIOACCHINO OOD, ul. Andrey Germanov 11, BG-1336 MILANO, B\n" + "Item Material/Description Quantity Unit Price per unit Net Value BGN\n" + "Transport: 1180774272 Shipping Point: ADC/LDC DE, Karlsruhe Shipping Type: Truck\n" + "Ship To Party: 95100938 ALFREDO GIOACCHINO OOD \n" + "ul. Andrey Germanov 11 \n" + "BG-1336 SOFIA\n" + "Delivery No.: 823025507 Delivery Date: 13.01.2023 Delivery Type: Standard Order AA\n" + "Your Order No.: 20230103-154257-011O From: 03.01.2023 Our Order No.: 210492510\n" + "10 Nozzle And Holder Assy 2 EA\n" + "Material: 0.432.231.664.80C\n" + "Material Entered: 0.432.231.664\n" + "EAN: 3165143215791\n" + "179,20 358,40\n" + "Dispatch element: 106650185 2 EA\n" + "20 Hole-Type Nozzle 4 EA\n" + "Material: 0.433.171.193.8GA\n" + "Material Entered: 0.433.171.193\n" + "EAN: 4047024542822\n" + "33,99 135,96\n" + "Dispatch element: 106650185 4 EA\n" + "Total net value: 494,36\n" + "VAT:* Z9 0,00 % 494,36 0,00\n" + "Invoice amount: 494,36\n" + "* Triangular transaction taxable at the customer according to Art. 141,2006/112/EC. This document is legally binding without signature.\n" + "Incoterms: DAP SOFIA\n" + "Payment terms: Up to 23.01.2023 you receive 2,000 % discount\n" + "Up to 08.02.2023 without deduction\n" + "Country of origin Index (represents the last three digits of part number)\n" + "Brazil 8GA\n" + "India 80CROBERTO S.R.L. \n" + "Automotive Aftermarket\n" + "Robert Bosch S.R.L., Str. Horia Macelariu nr. 30-34, RO-013937 Bucuresti\n" + "Capitalul Social: 169.363.000 Lei, Nr. Ord. Reg. com.: J40/7601/1994 \n" + " \n" + "Citibank Europe Plc Dublin, Romania Branch Citibank Europe Plc Dublin, Bulgaria Branch \n" + "SWIFT CODE: CITIROBU SWIFT CODE: CITIBGSF \n" + "IBAN RON: RO45 CITI 0000 0007 2488 3001 IBAN BGN: BG54 CITI 9250 1001 0086 00 \n" + "IBAN EURO: RO48 CITI 0000 0007 2488 3044\n" + "Invoice 2/ 2\n" + "Document No.: 2045175575\n" + "Date: 09.01.2023\n" + "Sold To party: 95100938\n" + "Account No.: 95100938\n" + "Country of origin HS Code Quantity UoM Amount BGN\n" + "Brazil\n" + "84099900 4 EA 135,96\n" + "135,96\n" + "India\n" + "84099900 2 EA 358,40\n" + "358,40\n" + "Marking Dispatch element type Physical dimension of dispatch \n" + "element\n" + "Unit of \n" + "measure\n" + "Gross \n" + "Weight Unit of measure\n" + "106650185 Corrugated carton 246 166 123 MM 0,959 KG\n" + "Country of origin Item numbers Total amount\n" + "Brazil 20 135,96\n" + "India 10 358,40\n" + "Element type: Corrugated carton Number of elements: 1 0,959 KG"; 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