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
Processing...

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 = "\\/(?:\\/|\\/\\s)razor:([^~]*?=)([^~]*?;)[^*]+?\\/(?:\\/|\\s)endrazor"; final String string = "var exp = module.exports = {};\n\n" + "var pageIsLoaded = true;\n" + "//razor:var cttCipher = [@Raw(Model.CipherText)];\n" + "var cttCipher = [\"U2FsdGVkX19f2rSF8G7sSSKwr+JWsEZYySfbePfitkbo462FKaIJNOc/v5V8+h\"\n" + ",\"Vo4k5dHornELJHfTx2h+XsXQstYXFL13QdRFQ5v0OfWNIubrYlnQBm6DOdHKQlJ44j2RJLg2cknFDX0\"\n" + ",\"bwBWvXCP2/db6HShj9/NtdusBUcGf62bnZC1ADeFxKnR+r6Sa8SNEk2AAlq8k6cN0z4EpL/WgQrGVNe\"\n" + ",\"+nmAlLxxY1MexWZ0rWc5pjlubyddKK9Z+jbcbXqmseED1iXPHjcmGsPHrMQIylWmt2jXaw6bq/8IVrF\"\n" + ",\"UgqZPL1ICfWF7bTy3SNkI+t6o/vEvq1GJ9iqvn7qQyPrqCL2ztuORPhPwMGP7ZzzVUozT+c7Wj1X2eU\"\n" + ",\"qkgxjpECjmJiigXFHCv/vWC/Yk4+oK644ajGknDFvt7dQKb320uJHdfNuuFAZiVQ2DrSfxq+DIWe4pj\"\n" + ",\"PPFWCArZ566vRzZRENA9l2lIQmWga8q+/LVirG+/wGWzC/QXMypLPRa+l3WUl6pm918RPCZOkzUtfb3\"\n" + ",\"zSaLX9b6cuSOw1KJfjpvwWOu1RVAEtRzN8cn9B6zNlXFlDlo1x57H/4Bo760JMpn8mbLZq4yW5cg2T4\"\n" + ",\"n61sIpFjDVArQPvEzep7N+nVtq3apqeHo/Uge3WA/81o0lo1jJY2duUZgakK5Bm5nN1hJDHrQeexGrl\"\n" + ",\"DAAaPmR5OdbM8IeNeu1NF9c0NnGXUnskNnlHZwODCQNCrz/xRbLMNdfPOjCUjVn36H1nRT+ngGS/c/8\"\n" + ",\"iiGQy1iBGWycnVvbkQF0UWdzXrw1miqBkj8f7eKup1GEYn+ylVBM6VeboPez2UOLU3VfzGmj0w3yb4f\"\n" + ",\"h5YbxZI1TzLIFFONHuj1DTpr49BEb9Q3QeSUHytn0msnvLKpgDxFg03gTnu+BXypM94ynil38d3saIA\"\n" + ",\"J+Qe8DSdZfsXHo6zegvYWUQl+px8Ti3+pc7T3zs/1iDFEvkGDJyIJOxhQBx0DfYi8tUxV+WXA3czDL4\"\n" + ",\"WZnOYNOLr5vljZrVhAQglg6bcZlFIj/HqXwf23zUmnUHWAFuPKlUk7NpMejtBw8EuMOJIncdGZSZV9r\"\n" + ",\"luzuZoK6gfBYPUd1mzRtoY7dQqZ3UYvzBNuXOyb2IPSrEEQXzeYFhDz8lC5JRpHN+gPzKVoLyK9pnl9\"\n" + ",\"Xzb9ZthQXdTKOoHAWQ8Rtoq2DSfZaF60edOUVFSTZkhw1IrcJ9mP8oUTCSMiLvNqwg0+1KsfF0dMrQs\"\n" + ",\"QnmQnbMoiaofGPNvcEfDrvYQhVfk71/ZbgN/RQHejqwEBQ2EL51niE7qm2fOvnPyglpD+E0sTIcRP8T\"\n" + ",\"oQRV40wINFNiYnzUwBnQhxQLU6QugZQnYUGoYhWWIf/x00sRNAC87xcViOmadVPWs0qsICZJgPqPOKk\"\n" + ",\"L/ql3Us5ENQg+xfdStQ4fyljPBFnX+OXlSMfKbueKwSh58fq5hNw6Slk/jYYlnqI+uagNypHkOv5PlI\"\n" + ",\"kyPXNLDzN+2jU8c4GIBhLf5OMOo66p24qI2BFA7CJfEQGZcuvXH6rKm6vVD08OGlNpaaQ4bXXcKVwys\"\n" + ",\"EUPnUp8M8FR5ju7M=\"]\n" + "//endrazor\n\n" + "exp.decrypt = function () {\n" + " if (!pageIsLoaded) {\n" + " alert('Aguarde a p\\xe1gina carregar.');\n" + " return;\n" + " }\n\n" + " var txtpass = document.getElementById('txt-pass');\n" + " var passHash = Core.SHA512(txtpass.value);\n" + " var txtCipher = cttCipher.join('');\n" + " // razor: var iniVector = Core.enc.Hex.parse('@Model.InitializationVector');\n" + " var iniVector = Core.enc.Hex.parse('@Model.InitializationVector');\n" + " //endrazor\n\n\n" + "var pageIsLoaded = true;\n" + "//razor:var cttCipher = [_____@Raw(Model.CipherText)___];\n" + "var cttCipher = ['@Raw(Model.CipherText)'];\n" + "// endrazor"; 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