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 = "((?:\\+|00)[17](?: |\\-|\\.)?|(?:\\+|00)[1-9]\\d{0,2}(?: |\\-|\\.)?|(?:\\+|00)1\\-\\d{3}(?: |\\-|\\.)?)?(0\\d|\\([0-9]{3}\\)|[1-9]{0,3})(?:((?: |\\-|\\.)[0-9]{2}){4}|((?:[0-9]{2}){4})|((?: |\\-|\\.)[0-9]{3}(?: |\\-|\\.)[0-9]{4})|([0-9]{7}))"; final String string = " 12345678901\n" + " 12345678901x1234\n" + " 345678901x1234\n" + " 12344678901\n" + " 12345678901\n" + " 12345678901\n" + " 12345678901\n" + " +4112345678\n" + " +441234567890\n" + " 1 (234) 567-8901\n" + " 1 (234) 567-8901 x1234\n" + "01 23 45 56 78\n" + "335.23.23.23.23\n" + "0689912549\n" + "+33698912549\n" + "+33 6 79 91 25 49\n" + "+33-6-79-91-25-49\n" + "(555)-555-5555\n" + "555-555-5555\n" + "+1-238 6 79 91 25 49\n" + "+1-555-532-3455\n" + "+15555323455\n" + "55555555555555555555555555\n" + "+7 06 79 91 25 49\n" + "935 263223 64 949\n" + "067 9 91 254 9\n" + "331 23 45 56 78\n" + "331.23.45.56.78\n" + "331 23 45 56.78\n" + "33123455678\n" + "2312523125\n\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