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

/
/
gmi

Test String

Code Generator

Generated Code

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String[] args) { final String regex = "^([0-9]{8,10}[^a-zA-Z\\s])$"; final String string = "This is a number also 123-456-7890\n" + "This is not a number: 123456\n" + "This is not a number, but an address 123 456\n" + "My parameters are 90/60/90 - 120/150/120 - not a phone number\n" + "I am cheeky and I use letter 0 instead of zero 604_213_0293 Or I use | symbol\n" + "and also 604_2|3_0293 may happen\n" + "The most classical Canadian number is +1(604)123-4567 hi hi\n" + "Dashes can be different 123-456–7890\n" + "And looks like phone +I(800)-2l4-15O but contain combination with letter\n\n" + " 'oi+I(222)3334444oi',\n" + " 'io+0 (222) 333 444Ooi',\n" + " 'O+l ( 222 ) 3|3 4O40O',\n" + " '+O+l ( 222 ) 3|3 4O40O',\n" + "069123521\n" + "0691235523\n" + "06912355312\n" + "in text 123-567\n" + "+(1)-23567 text\n" + "in text 123567-2 text\n\n" + "---------------------------------------\n\n" + "in text 1-800-123-123\n" + "1-800-123-123 text\n" + "in text 1-800-123-123 text\n\n" + "---------------------------------------\n\n" + "in text 1-800-123-123\n" + "1-800-123-123 text\n" + "in text 1-800-123-123 text\n\n\n" + "---------------------------------------\n" + "n0OOOOOOOOOOOO\n\n" + "h1iiiiiiiiiiiii\n\n" + "in text +l-800-123-123\n" + "1-8oo-I23-i23 text\n" + "in text +1 (800)-l23-123 text\n\n" + "phone\n" + " '012345678',\n" + " '0123456789',\n" + " '01234567891',\n" + " '012345678912',\n" + " '0123456789123',\n" + " '01234567891234',\n" + " '012345678912345',\n" + " '800-1234567',\n" + " '8Oo-I234567-l',\n" + " '+1(222)3334444',\n" + " '+1 (222) 333 4444',\n" + " '+1 ( 222 ) 333 4444',\n" + " '+1-222-333-4444',\n" + " '+1 222 333 4444',\n" + " '236 - 332 - 6669',\n" + " '(604)123-4567',\n" + " '604 123 4567',\n" + " '604_123_4567',\n" + " '2368337551',\n" + " '12223334444',\n" + " '222) 333 4444',\n" + " '3333 4444',\n" + " '(437)1234567',\n" + " '(888)1234123',\n\n" + "not a phone\n" + " '0',\n" + " '01',\n" + " '012',\n" + " '0123',\n" + " '01234',\n" + " '012345',\n" + " '0123456',\n" + " '01234567',\n" + " '90-60-90',\n" + " '90/60/90',\n" + " '0123456789123456',\n" + " '+X (XXX) XXX XXXX',\n" + " '1/23-4',\n" + " '1 / 23 - 4',\n" + " '1234/12,3-1234'"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.CASE_INSENSITIVE); 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