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

Substitution

Processing...

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 = "\\>(^($|\\<\\>)|[A-Z a-z0-9\\,\\.\\/\\)\\(\\*\\+\\:\\-]{2,}+)\\<\\/"; final String string = "@extends('layouts.index')\n" + "@section('styles')\n" + "<style>\n" + " @media screen and (max-width: 1000px) {\n" + " .btn {\n" + " border-radius: 0.5rem !important;\n\n\n" + " margin-top: 20px;\n" + " width: 100%;\n" + " }\n\n" + " #q {\n" + " border-radius: 0px;\n" + " }\n" + " }\n" + "</style>\n" + "@endsection\n" + "@section('title')\n" + "<title>\n" + " {{ 'Jobs - '.config('app.name')}}\n" + "</title>\n" + "@endsection\n" + "@section('content')\n" + "<div class=\"container-fluid py-4\">\n\n" + " <form action=\"{{route('jobs.list')}}\" method=\"GET\">\n" + " <div class=\"row g-0\">\n" + " <div class=\"col-lg-3 col-6\">\n" + " <input id=\"q\" name=\"q\" class=\"form-control\" value=\"@if(isset($_GET['q'])){{$_GET['q']}}@endif\" type=\"text\" style=\"border-bottom-right-radius: 0px; border-top-right-radius: 0px\" placeholder=\"Search jobs\" autocomplete=\"off\">\n" + " </div>\n" + " <div class=\"col-lg-2 col-6\">\n" + " <select class=\"form-select\" name=\"category\" id=\"category\" style=\"border-radius: 0px;\" aria-label=\"Default select example\">\n" + " <option value=\"\" selected>Categories</option>\n" + " @foreach($categories as $category)\n" + " <option value=\"{{$category->slug}}\">{{$category->name}}</option>\n" + " @endforeach\n" + " </select>\n" + " </div>\n" + " <div class=\"col-lg-2 col-6\">\n" + " <select class=\"form-select\" name=\"job_type\" id=\"job_type\" style=\"border-radius: 0px;\" aria-label=\"Default select example\">\n" + " <option value=\"\" selected>Job Type</option>\n" + " <option value=\"Part Time\">Part Time</option>\n" + " <option value=\"Full Time\">Full Time</option>\n" + " </select>\n" + " </div>\n" + " <div class=\"col-lg-2 col-6\">\n" + " <select class=\"form-select\" name=\"price_type\" id=\"price_type\" style=\"border-radius: 0px;\" aria-label=\"Default select example\">\n" + " <option value=\"\" selected>Price Type</option>\n" + " <option value=\"Fixed\">Fixed</option>\n" + " <option value=\"Hourly\">Hourly</option>\n" + " </select>\n" + " </div>\n" + " <div class=\"col-lg-3 col-12\"><button type=\"submit\" class=\"btn btn-dark search\" style=\"border-top-left-radius: 0px; border-bottom-left-radius: 0px\">Search</button></div>\n" + " </div>\n" + " </form>\n\n" + " <div class=\"row\">\n" + " <div class=\"col-12\">\n" + " <div class=\"card mb-4\">\n" + " <div class=\"card-header pb-0\">\n\n" + " <h6>Jobs</h6>\n" + " @if (session('deleted_job'))\n" + " <span style=\"color:red\">{{session('deleted_job')}}</span>\n" + " @endif\n" + " @if (session('min_length_input'))\n" + " <span style=\"color:red\">{{session('min_length_input')}}</span>\n" + " @endif\n" + " </div>\n\n" + " <div class=\"card-body px-0 pt-0 pb-2\">\n" + " <div class=\"table-responsive p-0\">\n" + " @if (count($jobs)>0)\n" + " <table class=\"table align-items-center mb-0\">\n" + " <thead>\n" + " <tr>\n" + " <th class=\"text-uppercase text-secondary text-xxs font-weight-bolder opacity-7\">Title</th>\n" + " <th class=\"text-uppercase text-secondary text-xxs font-weight-bolder opacity-7 ps-2\">Category/Address</th>\n" + " <th class=\"text-uppercase text-secondary text-xxs text-center font-weight-bolder opacity-7 ps-2\">Price type</th>\n" + " <th class=\"text-uppercase text-secondary text-xxs text-center font-weight-bolder opacity-7 ps-2\">Price</th>\n" + " <th class=\"text-center text-uppercase text-secondary text-center text-xxs font-weight-bolder opacity-7\">Start date</th>\n" + " <th class=\"text-center text-uppercase text-secondary text-center text-xxs font-weight-bolder opacity-7\">End date</th>\n" + " <th class=\"text-center text-uppercase text-secondary text-center text-xxs font-weight-bolder opacity-7\">Options</th>\n\n" + " </tr>\n" + " </thead>\n" + " <tbody>\n\n" + " @foreach($jobs as $job)\n\n" + " <tr>\n" + " <td>\n" + " <a href=\"{{route('job.show',$job->slug)}}\">\n" + " <div class=\"d-flex px-2 py-1\">\n" + " <div>\n" + " <img src=\"/images/{{$job->user->photo->name}}\" class=\"avatar avatar-sm me-3\" alt=\"user1\">\n" + " </div>\n" + " <div class=\"d-flex flex-column justify-content-center\">\n" + " <h6 class=\"mb-0 text-sm\">{{$job->title}}</h6>\n" + " <p class=\"text-xs text-secondary mb-0\">{{$job->user->company->name}}</p>\n" + " </div>\n" + " </div>\n" + " </a>\n" + " </td>\n" + " <td>\n" + " <p class=\"text-xs font-weight-bold mb-0\">{{$job->category->name}}</p>\n" + " <p class=\"text-xs text-secondary mb-0\">{{$job->address}}</p>\n" + " </td>\n" + " <td class=\"align-middle text-center text-sm\">\n" + " <p class=\"text-xs font-weight-bold mb-0\">{{$job->price_type}}</p>\n" + " </td>\n" + " <td class=\"align-middle text-center text-sm\">\n" + " <p class=\"text-xs font-weight-bold mb-0\">{{$job->price}}</p>\n" + " </td>\n" + " <td class=\"align-middle text-center text-sm\">\n" + " <p class=\"text-xs font-weight-bold mb-0\">{{$job->startingDate}}</p>\n" + " </td>\n" + " <td class=\"align-middle text-center\">\n" + " <p class=\"text-xs font-weight-bold mb-0\">{{($job->endingDate) ? $job->endingDate : '/' }}</p>\n" + " </td>\n" + " <td class=\"align-middle text-center\">\n" + " <span class=\"text-secondary text-xs font-weight-bold\">\n" + " <form action=\"{{route('job.destroy',$job->slug)}}\" method=\"POST\" style=\"display: inline; \">\n" + " @csrf\n" + " @method('DELETE')\n" + " <button type=\"submit\" name=\"remove_job\" style=\"text-decoration: none; color:red!important; padding: 0; margin:0!important;text-transform: none;\" class=\"btn btn-link\">Delete</button>\n" + " </form>\n" + " </span>\n" + " </td>\n" + " </tr>\n" + " @endforeach\n\n" + " </tbody>\n\n" + " </table>\n" + " @else\n" + " <span style=\"color:red; margin-left: 25px;\">No jobs found.</span>\n" + " @endif\n" + " <div class=\"d-flex justify-content-center mt-3\">\n" + " {{$jobs->links()}}\n\n" + " </div>\n" + " </div>\n\n" + " </div>\n\n" + " </div>\n" + " </div>\n" + " </div>\n\n" + " @endsection\n" + " @section('scripts')\n" + " <script>\n" + " const searchBtn = document.querySelector('.search');\n" + " searchBtn.addEventListener('click', function() {\n\n" + " const searchField = document.querySelector('#q');\n" + " const categoriesBtn = document.getElementById('category');\n" + " const categoryValue = categoriesBtn.options[categoriesBtn.selectedIndex].text;\n\n" + " const jobtypeBtn = document.getElementById('job_type');\n" + " const jobtypeValue = jobtypeBtn.options[jobtypeBtn.selectedIndex].text;\n\n" + " const pricetypeBtn = document.getElementById('price_type');\n" + " const pricetypeValue = pricetypeBtn.options[pricetypeBtn.selectedIndex].text;\n\n" + " if (searchField.value == '') {\n" + " searchField.disabled = true;\n" + " }\n" + " if (categoryValue == 'Categories') {\n" + " categoriesBtn.disabled = true;\n" + " }\n" + " if (jobtypeValue == 'Job Type') {\n" + " jobtypeBtn.disabled = true;\n" + " }\n" + " if (pricetypeValue == 'Price Type') {\n" + " pricetypeBtn.disabled = true;\n" + " }\n\n" + " });\n" + " </script>\n\n" + " @endsection"; final String subst = ">{{__(\"$1\")}}</"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE); final Matcher matcher = pattern.matcher(string); // The substituted value will be contained in the result variable final String result = matcher.replaceAll(subst); System.out.println("Substitution result: " + result); } }

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