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

/
/
gi

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 = "(msie\\s[5-9])"; final String string = "#IE 11\n" + "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; AS; rv:11.0) like Gecko\n" + "Mozilla/5.0 (compatible, MSIE 11, Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko\n" + "Mozilla/5.0 (compatible; MSIE 10.6; Windows NT 6.1; Trident/5.0; InfoPath.2; SLCC1; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET CLR 2.0.50727) 3gpp-gba UNTRUSTED/1.0\n\n" + "#IE 10\n" + "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 7.0; InfoPath.3; .NET CLR 3.1.40767; Trident/6.0; en-IN)\n" + "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)\n" + "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)\n" + "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/5.0)\n" + "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/4.0; InfoPath.2; SV1; .NET CLR 2.0.50727; WOW64)\n" + "Mozilla/5.0 (compatible; MSIE 10.0; Macintosh; Intel Mac OS X 10_7_3; Trident/6.0)\n" + "Mozilla/4.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/5.0)\n" + "Mozilla/1.22 (compatible; MSIE 10.0; Windows 3.1)\n\n" + "#IE 9\n" + "Mozilla/5.0 (Windows; U; MSIE 9.0; WIndows NT 9.0; en-US))\n" + "Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 7.1; Trident/5.0)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; Media Center PC 6.0; InfoPath.3; MS-RTC LM 8; Zune 4.7)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; Media Center PC 6.0; InfoPath.3; MS-RTC LM 8; Zune 4.7\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; Zune 4.0; InfoPath.3; MS-RTC LM 8; .NET4.0C; .NET4.0E)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; chromeframe/12.0.742.112)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 2.0.50727; Media Center PC 6.0)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 2.0.50727; Media Center PC 6.0)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; Zune 4.0; Tablet PC 2.0; InfoPath.3; .NET4.0C; .NET4.0E)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; yie8)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET CLR 1.1.4322; .NET4.0C; Tablet PC 2.0)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; FunWebProducts)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; chromeframe/13.0.782.215)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; chromeframe/11.0.696.57)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0) chromeframe/10.0.648.205\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/4.0; GTB7.4; InfoPath.1; SV1; .NET CLR 2.8.52393; WOW64; en-US)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; Trident/5.0; chromeframe/11.0.696.57)\n" + "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; Trident/4.0; GTB7.4; InfoPath.3; SV1; .NET CLR 3.1.76908; WOW64; en-US)\n\n" + "#IE 8\n" + "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; GTB7.4; InfoPath.2; SV1; .NET CLR 3.3.69573; WOW64; en-US)\n" + "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 1.0.3705; .NET CLR 1.1.4322)\n" + "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; InfoPath.1; SV1; .NET CLR 3.8.36217; WOW64; en-US)\n" + "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; .NET CLR 2.7.58687; SLCC2; Media Center PC 5.0; Zune 3.4; Tablet PC 3.6; InfoPath.3)\n" + "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; Media Center PC 4.0; SLCC1; .NET CLR 3.0.04320)\n" + "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; SLCC1; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET CLR 1.1.4322)\n" + "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; InfoPath.2; SLCC1; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET CLR 2.0.50727)\n" + "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727)\n" + "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 5.1; SLCC1; .NET CLR 1.1.4322)\n" + "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 5.0; Trident/4.0; InfoPath.1; SV1; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET CLR 3.0.04506.30)\n" + "Mozilla/5.0 (compatible; MSIE 7.0; Windows NT 5.0; Trident/4.0; FBSMTWB; .NET CLR 2.0.34861; .NET CLR 3.0.3746.3218; .NET CLR 3.5.33652; msn OptimizedIE8;ENUS)\n" + "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.2; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)\n" + "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; Media Center PC 6.0; InfoPath.2; MS-RTC LM 8)\n" + "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; Media Center PC 6.0; InfoPath.2; MS-RTC LM 8\n" + "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; Media Center PC 6.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C)\n" + "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; InfoPath.3; .NET4.0C; .NET4.0E; .NET CLR 3.5.30729; .NET CLR 3.0.30729; MS-RTC LM 8)\n" + "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; InfoPath.2)\n" + "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; Zune 3.0)\n" + "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; msn OptimizedIE8;ZHCN)\n" + "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; MS-RTC LM 8; InfoPath.3; .NET4.0C; .NET4.0E) chromeframe/8.0.552.224\n\n" + "#IE 7\n" + "Mozilla/4.0(compatible; MSIE 7.0b; Windows NT 6.0)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 6.0)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 3.0.04506.30)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.1; Media Center PC 3.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.1)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.1; FDM; .NET CLR 1.1.4322)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.1; .NET CLR 1.1.4322; InfoPath.1; .NET CLR 2.0.50727)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.1; .NET CLR 1.1.4322; InfoPath.1)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.1; .NET CLR 1.1.4322; Alexa Toolbar; .NET CLR 2.0.50727)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.1; .NET CLR 1.1.4322; Alexa Toolbar)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.40607)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.1; .NET CLR 1.1.4322)\n" + "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.1; .NET CLR 1.0.3705; Media Center PC 3.1; Alexa Toolbar; .NET CLR 1.1.4322; .NET CLR 2.0.50727)\n" + "Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 6.0; en-US)\n" + "Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 6.0; el-GR)\n" + "Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 5.2)\n" + "Mozilla/5.0 (MSIE 7.0; Macintosh; U; SunOS; X11; gu; SV1; InfoPath.2; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648)\n" + "Mozilla/5.0 (compatible; MSIE 7.0; Windows NT 6.0; WOW64; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; c .NET CLR 3.0.04506; .NET CLR 3.5.30707; InfoPath.1; el-GR)\n" + "Mozilla/5.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; c .NET CLR 3.0.04506; .NET CLR 3.5.30707; InfoPath.1; el-GR)\n" + "Mozilla/5.0 (compatible; MSIE 7.0; Windows NT 6.0; fr-FR)\n" + "Mozilla/5.0 (compatible; MSIE 7.0; Windows NT 6.0; en-US)\n" + "Mozilla/5.0 (compatible; MSIE 7.0; Windows NT 5.2; WOW64; .NET CLR 2.0.50727)\n" + "Mozilla/5.0 (compatible; MSIE 7.0; Windows 98; SpamBlockerUtility 6.3.91; SpamBlockerUtility 6.2.91; .NET CLR 4.1.89;GB)\n" + "Mozilla/4.79 [en] (compatible; MSIE 7.0; Windows NT 5.0; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 1.1.4322; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648)\n" + "Mozilla/4.0 (Windows; MSIE 7.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)\n" + "Mozilla/4.0 (Mozilla/4.0; MSIE 7.0; Windows NT 5.1; FDM; SV1; .NET CLR 3.0.04506.30)\n" + "Mozilla/4.0 (Mozilla/4.0; MSIE 7.0; Windows NT 5.1; FDM; SV1)\n" + "Mozilla/4.0 (compatible;MSIE 7.0;Windows NT 6.0)\n" + "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.2; Win64; x64; Trident/6.0; .NET4.0E; .NET4.0C)\n" + "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; SLCC2; .NET CLR 2.0.50727; InfoPath.3; .NET4.0C; .NET4.0E; .NET CLR 3.5.30729; .NET CLR 3.0.30729; MS-RTC LM 8)\n" + "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; MS-RTC LM 8; .NET4.0C; .NET4.0E; InfoPath.3)\n" + "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)\n" + "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; chromeframe/12.0.742.100)\n\n" + "#IE 6\n" + "Mozilla/4.0 (compatible; MSIE 6.1; Windows XP; .NET CLR 1.1.4322; .NET CLR 2.0.50727)\n" + "Mozilla/4.0 (compatible; MSIE 6.1; Windows XP)\n" + "Mozilla/4.0 (compatible; MSIE 6.01; Windows NT 6.0)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 5.1; DigExt)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 5.1)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 5.0; YComp 5.0.2.6)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 5.0; YComp 5.0.0.0) (Compatible; ; ; Trident/4.0)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 5.0; YComp 5.0.0.0)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 5.0; .NET CLR 1.1.4322)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 5.0)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 4.0; .NET CLR 1.0.2914)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 4.0)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows 98; YComp 5.0.0.0)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows 98; Win 9x 4.90)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows 98)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 5.1)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 5.0; .NET CLR 1.0.3705)\n" + "Mozilla/4.0 (compatible; MSIE 6.0b; Windows NT 4.0)\n" + "Mozilla/5.0 (Windows; U; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)\n" + "Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)\n" + "Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4325)\n" + "Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 5.1)\n" + "Mozilla/45.0 (compatible; MSIE 6.0; Windows NT 5.1)\n" + "Mozilla/4.08 (compatible; MSIE 6.0; Windows NT 5.1)\n" + "Mozilla/4.01 (compatible; MSIE 6.0; Windows NT 5.1)\n" + "Mozilla/4.0 (X11; MSIE 6.0; i686; .NET CLR 1.1.4322; .NET CLR 2.0.50727; FDM)\n" + "Mozilla/4.0 (Windows; MSIE 6.0; Windows NT 6.0)\n" + "Mozilla/4.0 (Windows; MSIE 6.0; Windows NT 5.2)\n" + "Mozilla/4.0 (Windows; MSIE 6.0; Windows NT 5.0)\n" + "Mozilla/4.0 (Windows; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)\n" + "Mozilla/4.0 (MSIE 6.0; Windows NT 5.1)\n" + "Mozilla/4.0 (MSIE 6.0; Windows NT 5.0)\n" + "Mozilla/4.0 (compatible;MSIE 6.0;Windows 98;Q312461)\n" + "Mozilla/4.0 (Compatible; Windows NT 5.1; MSIE 6.0) (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)\n" + "Mozilla/4.0 (compatible; U; MSIE 6.0; Windows NT 5.1) (Compatible; ; ; Trident/4.0; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 1.0.3705; .NET CLR 1.1.4322)\n" + "Mozilla/4.0 (compatible; U; MSIE 6.0; Windows NT 5.1)\n" + "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; InfoPath.3; Tablet PC 2.0)\n" + "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; GTB6.5; QQDownload 534; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; SLCC2; .NET CLR 2.0.50727; Media Center PC 6.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729)\n"; final Pattern pattern = Pattern.compile(regex, 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