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 = "[[:graph:]]+@[[:graph:]]+\\.[[:graph:]]+"; final String string = "6x7 456 78993 45528 8382 837372 82 128 8282 82 828282 28 8282635372892 838 \n" + "Lorem ipsum dolor 335-5555555 sit amet, consectetur adipisci5555555555 elit, sed eiusmod tempor incidunt ut labore et dolore magna aliqua.\n\n" + "Ut enim ad minim veniam, quis 4@4 nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid e Mario ROSSI x ea commodi Fabio DE LUIGI cons mail@test.com equatur. 3835555555 Quis aute iure reprehenderit in voluptate 555/555555velit esse cillum HOMAWI @dolore eu fugiat nulla pariatur. 43434734 343 3 464 56 @5 65 6 5 757 676 Microsoft Office. \n\n" + "Excepteur sint Vaalima obcaecat Digital Forensics 192.168.3.45 cupiditat non RSSNDR74D04A271P proident, sunt in Sabrox bombazzi culpa qui officia de@serunt mollit anim id est laborum. Lorem ipsum Dr.Torsby dolor sit amet, consec 234 546 367 2789 Veldrin tetur adipisci yourken elit,347/5555555 sed eiusm 565437 od tempor incidunt ut labore et Andrea dolore magna aliqua. Ut enim ad minim TELEFUNKEN elin@unita15.no.it \n\n\n" + "FRODENO Jan enim ad minim 555-555555veniam, quis rssndr74d04a271u Zhang YUNING nostrum exercitatio@nem ullam 10.5.6.1corporis Vaalima suscip Wu LEI it laboriosam, nisi ut aliquid ex ea commodi Arael cons@equatur. Quis aute iure r328 5555555 eprehenderit in volup6767676767 6767676767tate 555 555555velit PLANESCAPE esse cillum dolore eu fugiat nulla pariatur.\n\n" + "Excepteur sint obcae67676767676767676cat Soul Thosiel rssndr74D04A271U cupidita34567893 t non proident, sunt in culpa qui officia deserunt mollit Abdul-Wahaab Vaalima anim id est laborum. 388.555555 Lorem rSsndr74d04a271u ipsum cinnamomo@cengia.eu dolor sit amet, consectetur adipisci elit, sed Rosa eiusmod tempor Aimar incidunt ut labore et dolore magna a6767676767 32252525 353535 5353535liqua. Ut enim ad minim"; 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