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 = "(👨)(?:([🏻🏼🏽🏾🏿])?(\\x{200D}[🦰🦱🦳🦲])?\\x{FE0F}?)?"; final String string = "Codepoints\n\n" + " 👨 U+1F468\n\n" + "Shortcodes\n\n" + " :man:\n\n" + "Related\n\n" + " 👨 Man\n" + " 👨🏻 Man: Light Skin Tone\n" + " 👨🏼 Man: Medium-Light Skin Tone\n" + " 👨🏽 Man: Medium Skin Tone\n" + " 👨🏾 Man: Medium-Dark Skin Tone\n" + " 👨🏿 Man: Dark Skin Tone\n" + " 👩 Woman\n" + " 👩🏻 Woman: Light Skin Tone\n" + " 👩🏼 Woman: Medium-Light Skin Tone\n" + " 👩🏽 Woman: Medium Skin Tone\n" + " 👩🏾 Woman: Medium-Dark Skin Tone\n" + " 👩🏿 Woman: Dark Skin Tone\n\n\n" + "See also\n\n" + " 🧔 Man: Beard\n" + " 🧔🏻 Man: Light Skin Tone, Beard\n" + " 🧔🏼 Man: Medium-Light Skin Tone, Beard\n" + " 🧔🏽 Man: Medium Skin Tone, Beard\n" + " 🧔🏾 Man: Medium-Dark Skin Tone, Beard\n" + " 🧔🏿 Man: Dark Skin Tone, Beard\n\n" + " 👨‍🦳 Man: White Hair\n" + " 👨🏻‍🦳 Man: Light Skin Tone, White Hair\n" + " 👨🏼‍🦳 Man: Medium-Light Skin Tone, White Hair\n" + " 👨🏽‍🦳 Man: Medium Skin Tone, White Hair\n" + " 👨🏾‍🦳 Man: Medium-Dark Skin Tone, White Hair\n" + " 👨🏿‍🦳 Man: Dark Skin Tone, White Hair\n" + " 👩‍🦳 Woman: White Hair\n" + " 👩🏻‍🦳 Woman: Light Skin Tone, White Hair\n" + " 👩🏼‍🦳 Woman: Medium-Light Skin Tone, White Hair\n" + " 👩🏽‍🦳 Woman: Medium Skin Tone, White Hair\n" + " 👩🏾‍🦳 Woman: Medium-Dark Skin Tone, White Hair\n" + " 👩🏿‍🦳 Woman: Dark Skin Tone, White Hair\n\n" + " 👨‍🦰 Man: Red Hair\n" + " 👨🏻‍🦰 Man: Light Skin Tone, Red Hair\n" + " 👨🏼‍🦰 Man: Medium-Light Skin Tone, Red Hair\n" + " 👨🏽‍🦰 Man: Medium Skin Tone, Red Hair\n" + " 👨🏾‍🦰 Man: Medium-Dark Skin Tone, Red Hair\n" + " 👨🏿‍🦰 Man: Dark Skin Tone, Red Hair\n" + " 👩‍🦰 Woman: Red Hair\n" + " 👩🏻‍🦰 Woman: Light Skin Tone, Red Hair\n" + " 👩🏼‍🦰 Woman: Medium-Light Skin Tone, Red Hair\n" + " 👩🏽‍🦰 Woman: Medium Skin Tone, Red Hair\n" + " 👩🏾‍🦰 Woman: Medium-Dark Skin Tone, Red Hair\n" + " 👩🏿‍🦰 Woman: Dark Skin Tone, Red Hair\n\n" + " 👦 Boy\n" + " ♂ Male Sign\n" + " 🕺 Man Dancing\n" + " 👲 Man With Chinese Cap\n" + " 🕴 Man in Suit Levitating\n" + " 🤵 Man in Tuxedo\n" + " 👴 Old Man\n" + " 👵 Old Woman\n" + " 🎅 Santa Claus"; 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