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|\\s)(?:(?:\\+?(\\d{1}|\\d{2}|\\d{3})\\s*)\\s*(?:\\(\\s*(\\d{1}|\\d{2}|\\d{3})\\s*\\)|(\\d{1,3}))\\s*\\-?(?:\\(\\s*(\\d{1,3})\\s*\\)|(\\d{3}))\\s*\\-?(?:\\d{2}\\s*\\-?\\d{2}))"; final String string = "\n" + "+79996364778 rus\n" + "8 (918) 373-6633 rus\n" + "+1 650-798-2800 usa \n" + " 8(949)373-66-55 rus\n" + " +7 (961) 859-56-19 rus\n" + "+1 205-635-1136 usa\n" + "+22(909)333 4334\n" + "+7(985)5310868\n" + "+79855310868\n" + "88008454545\n" + "+55 11 99999-5555 Brazil\n" + "+593 7 282-3889 Ecuador\n" + "(+44) 0848 9123 456 UK\n" + "+1 284 852 5500 BVI\n\n" + "+1 345 9490088 Grand Cayman\n" + "+32 2 702-9200 Belgium\n" + "+65 6511 9266 Asia Pacific\n" + "+86 21 2230 1000 Shanghai\n" + "+9124 4723300 India\n" + "+821012345678 South Korea\n" + "And for your extension pleasure\n" + "+55 11 99999-5555 ramal 123 Brazil\n" + "+55 11 99999-5555 foo786544 Brazil\n\n" + "(?!\\b(0)\\1+\\b)(\\+?\\d{1,3})\\s?\\(?\\d{3}\\)?\\s?([. -]?)\\d{3}\\3\\d{4}"; 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