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 = "^[\\w\\s./-]*(?:\\s\\d+){4}(?:\\s\\$\\d+\\.\\d+){2}$"; final String string = "Amount\n" + "2144-PL\n" + "1XL 2XL 3XL\n" + "2144-\n" + "PL Navy Blue 2 2 2 6 $11.50 $69.00\n" + "ETK-2097K-PL PLUS-TOP - BACK BUTTON TUNICS 95% RAYON 5% SPANDEX MADE IN USA\n" + "1XL 2XL 3XL\n" + "Black 2 2 2 6 $12.00 $72.00\n" + "Teal 2 2 2 6 $12.00 $72.00\n" + "ETK-2197-SW-\n" + "1XL 2XL 3XL\n" + "PL ETK-\n" + "2197- H.Grey/Burgu… 2 2 2 6 $14.00 $84.00\n" + "Off-White/Black 1 1 1 3 $14.00 $42.00\n" + "ETK-2143 Tops - 95% RAYON 5% SPANDEX MADE IN USA\n" + "S M L\n" + "Heather Grey 2 2 2 6 $10.50 $63.00\n" + "Royal Blue 2 2 2 6 $10.50 $63.00\n" + "Ruby Red 2 2 2 6 $10.50 $63.00\n" + "ETK2186-GD- Tops-Stripe Solid-95% Rayon 5% Spandex Made in USA\n" + "PL\n" + "1XL 2XL 3XL\n" + "Burgundy/Bur… 2 2 2 6 $11.00 $66.00\n" + "Ivory/Black 2 2 2 6 $11.00 $66.00\n" + "2139 - WP-PL PLUS TOP -95% RAYON 5% SPANDEX MADE IN USA\n" + "1XL 2XL 3XL\n" + "As Shown 2 2 2 6 $9.50 $57.00\n" + "ETK-2228\n" + "S M L\n" + "ETK- \n" + "2228 Off-White/Black 2 2 2 6 $9.50 $57.00\n" + "ETK-2149-PL\n" + "1XL 2XL 3XL\n" + "ETK-\n" + "2149- Taupe 2 2 2 6 $11.50 $69.00\n" + "BACK\n" + "ORDERED\n" + "White 2 2 2 6 $11.50 $69.00\n" + "Sub"; 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