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

/
/
mig

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 = "^(?=(?:\\+|0{2})?(?:(?:[\\(\\-\\)\\.\\/ \\t\\f]*\\d){7,10})?(?:[\\-\\.\\/ \\t\\f]?\\d{2,3})(?:[\\-\\s]?[ext]{1,3}[\\-\\.\\/ \\t\\f]?\\d{1,4})?$)((?:\\+|0{2})\\d{0,3})?(?:[\\-\\.\\/ \\t\\f]?)(\\(0\\d[ ]?\\d{0,4}\\)|\\(\\d{0,4}\\)|\\d{0,4})(?:[\\-\\.\\/ \\t\\f]{0,2}\\d){3,8}(?:[\\-\\s]?(?:x|ext)[\\-\\t\\f ]?(\\d{1,4}))?$"; final String string = "911\n" + "123456789\n" + "12345678\n" + "1234567890123\n" + "001231234567890\n" + "0012312345678901\n" + "123456789012\n" + "1234\n" + "0091234567890\n" + "+9 123-4567890-x321\n" + "+9-123-456-7890\n" + "+9 123 4 5 6-7890x1234\n" + "009-(123)-456-7890 ext4321\n" + "0091234567890x1234\n" + "+9-123-456-7890x12345\n" + "+9-123-456-7890 ext 1234\n" + "00123-(4321)-567.89 ext-4321\n" + "0027-123-456-7890\n" + "+27-123-456-7890\n" + "+9(123)4567890\n\n" + "(01 55) 1234 5678\n" + "(01 551) 12345678\n" + "+49 (1234) 567890\n" + " (0)123456789\n" + "+34123456789\n" + "+34 (0)123456789\n" + " +340123456789\n" + "+34 123 456 789\n" + "+34 1 23 45 67 89\n" + "001230123456789\n" + "ext1234\n" + "++34123456789\n" + "00-0-----000\n" + "01 555012345\n" + "001-555012345\n" + "+012345678\n" + "112\n" + "12(34567890\n" + "123)456789012345\n\n" + "1-234-567-8901\n" + "+1-234-567-8901 x1234\n" + "0011-234-567-8901 ext1234\n" + ")234( 567 8901\n" + "(234) 567 8901\n" + "+11 (234) 567-8901\n" + "+1.234.567.8901\n" + "+1/234/567/8901\n" + "12345678901\n" + "2345678901"; 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