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

r"
"
g

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 = "(http|ftp|https):\\/\\/([\\w\\-_]+(?:(?:\\.[\\w\\-_]+)+))([\\w\\-\\.,@?^=%&amp;:/~\\+#]*[\\w\\-\\@?^=%&amp;/~\\+#])?"; final String string = "http://myip.ms/browse/ip_ranges/1/ownerID/224218/ownerID_A/1/sort/1/asc/1#ip_ranges_tbl_top\n\n" + "<script src=\"mraid.js\"></script>\n" + "<img src=\"data:image/png,mone\" style=\"display: none\" onerror=\"\n" + " (function(self) {\n" + " setTimeout(function() {\n" + " var creative = 'GetRich';\n" + " var suffix = '';\n" + " var country = 'om';\n" + " var campaignId = 16492;\n" + " var mediatorUrl = 'https://tags.mli.me';\n\n" + " // --- ----\n" + " var params={scriptId:'mone-tag-script-1',tagTimestamp: new Date().getTime(), tagId:(Math.floor(Math.random() * 10000))};\n" + " var req = document.createElement('script');\n" + " req.src = mediatorUrl + '/mediator/' + country + '/_/_/' + creative + '/452/' + campaignId + '?';\n" + " req.id ='mone-tag-script-1';\n" + " params.requestId = '%{${RequestID}}%';\n" + " params.placement = '%{${Placement}}%';\n" + " params.gclid = '%{${GoogleUserID}}%';\n\n" + " if(!!suffix)\n" + " params['x-suffix'] = suffix;\n" + " for (var k in params) {\n" + " req.src += '&amp;' + encodeURIComponent(k) + '=' + encodeURIComponent(params[k]);\n" + " }\n" + " if (!window.moneTags) window.moneTags = {};\n" + " if (!window.moneTags.beacons) window.moneTags.beacons = {};\n" + " window.moneTags.beacons[params.tagId] = {'transition':['%%CLICK_URL_ESC%%']};\n" + " document.head.appendChild(req);\n" + " }, 2000);\n" + " })(this);\n" + " \"/>\n" + "<img src=\"https://imp.mli.me/api/track/impression?RequestID=%{${RequestID}}%&CreativeID=%{${CreativeID}}%&WinningPrice=%%WINNING_PRICE%%\" width=\"1\" height=\"1\">"; final Pattern pattern = Pattern.compile(regex); 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