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

/
/
gu

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 = "[\\u\\{1f300\\}-\\u\\{1f5ff\\}\\u\\{1f900\\}-\\u\\{1f9ff\\}\\u\\{1f600\\}-\\u\\{1f64f\\}\\u\\{1f680\\}-\\u\\{1f6ff\\}\\u{2600}-\\u\\{26ff\\}\\u{2700}-\\u\\{27bf\\}\\u\\{1f1e6\\}-\\u\\{1f1ff\\}\\u\\{1f191\\}-\\u\\{1f251\\}\\u\\{1f004\\}\\u\\{1f0cf\\}\\u\\{1f170\\}-\\u\\{1f171\\}\\u\\{1f17e\\}-\\u\\{1f17f\\}\\u\\{1f18e\\}\\u{3030}\\u\\{2b50\\}\\u\\{2b55\\}\\u{2934}-\\u{2935}\\u\\{2b05\\}-\\u\\{2b07\\}\\u\\{2b1b\\}-\\u\\{2b1c\\}\\u{3297}\\u{3299}\\u\\{303d\\}\\u\\{00a9\\}\\u\\{00ae\\}\\u{2122}\\u\\{23f3\\}\\u\\{24c2\\}\\u\\{23e9\\}-\\u\\{23ef\\}\\u\\{25b6\\}\\u\\{23f8\\}-\\u\\{23fa\\}]"; final String string = "🌍💰🕧👨👩👧🤔🈂ī¸ 😘 ☃♨ī¸đŸ—ēī¸đŸ“„đŸĨ⚒ī¸đŸŒ€đŸĻđŸˆˇī¸đŸˆĩ🆚🀄⭐ī¸â¤ī¸âžĄī¸âž°ī¸â¤´ī¸âžŋī¸â­•ī¸ãŠ™ī¸đŸ€„đŸƒđŸ…ąī¸đŸ†Žã€°ī¸â¤ĩī¸âŦœī¸ã€Ŋī¸â­ī¸đŸ†’⏊ī¸ÂŠī¸â“‚ī¸â˜Ēī¸â˜•ī¸âēī¸â–ļī¸ÂŽī¸â„ĸī¸âŗī¸"; final Pattern pattern = Pattern.compile(regex, Pattern.UNICODE_CASE); 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