Regular Expressions 101

Save & Manage Regex

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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

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 = "(\\d\\.*\\d)*.+(fa-.+)\\s\\[&#x(.{4});\\]"; final String string = " fa-500px []\n" + " fa-adjust []\n" + " fa-adn []\n" + " fa-align-center []\n" + " fa-align-justify []\n" + " fa-align-left []\n" + " fa-align-right []\n" + "4.4  fa-amazon []\n" + " fa-ambulance []\n" + "4.6  fa-american-sign-language-interpreting []\n" + " fa-anchor []\n" + " fa-android []\n" + "4.2  fa-angellist []\n" + " fa-angle-double-down []\n" + " fa-angle-double-left []\n" + " fa-angle-double-right []\n" + " fa-angle-double-up []\n" + " fa-angle-down []\n" + " fa-angle-left []\n" + " fa-angle-right []\n" + " fa-angle-up []\n" + " fa-apple []\n" + " fa-archive []\n" + "4.2  fa-area-chart []\n" + " fa-arrow-circle-down []\n" + " fa-arrow-circle-left []\n" + " fa-arrow-circle-o-down []\n" + "4.0  fa-arrow-circle-o-left []\n" + "4.0  fa-arrow-circle-o-right []\n" + " fa-arrow-circle-o-up []\n" + " fa-arrow-circle-right []\n" + " fa-arrow-circle-up []\n" + " fa-arrow-down []\n" + " fa-arrow-left []\n" + " fa-arrow-right []\n" + " fa-arrow-up []\n" + " fa-arrows []\n" + " fa-arrows-alt []\n" + " fa-arrows-h []\n" + " fa-arrows-v []\n" + "4.6  fa-asl-interpreting (alias) []\n" + "4.6  fa-assistive-listening-systems []\n" + " fa-asterisk []\n" + "4.2  fa-at []\n" + "4.6  fa-audio-description []\n" + "4.1  fa-automobile (alias) []\n" + " fa-backward []\n" + "4.4  fa-balance-scale []\n" + " fa-ban []\n" + "4.1  fa-bank (alias) []\n" + " fa-bar-chart []\n" + " fa-bar-chart-o (alias) []\n" + " fa-barcode []\n" + " fa-bars []\n" + "4.4  fa-battery-0 (alias) []\n" + "4.4  fa-battery-1 (alias) []\n" + "4.4  fa-battery-2 (alias) []\n" + "4.4  fa-battery-3 (alias) []\n" + "4.4  fa-battery-4 (alias) []\n" + "4.4  fa-battery-empty []\n" + "4.4  fa-battery-full []\n" + "4.4  fa-battery-half []\n" + "4.4  fa-battery-quarter []\n" + "4.4  fa-battery-three-quarters []\n" + "4.3  fa-bed []\n" + " fa-beer []\n" + "4.1  fa-behance []\n" + "4.1  fa-behance-square []\n" + " fa-bell []\n" + " fa-bell-o []\n" + "4.2  fa-bell-slash []\n" + "4.2  fa-bell-slash-o []\n" + "4.2  fa-bicycle []\n" + "4.2  fa-binoculars []\n" + "4.2  fa-birthday-cake []\n" + " fa-bitbucket []\n" + " fa-bitbucket-square []\n" + " fa-bitcoin (alias) []\n" + "4.4  fa-black-tie []\n" + "4.6  fa-blind []\n" + "4.5  fa-bluetooth []\n" + "4.5  fa-bluetooth-b []\n" + " fa-bold []\n" + " fa-bolt []\n" + "4.1  fa-bomb []\n" + " fa-book []\n" + " fa-bookmark []\n" + " fa-bookmark-o []\n" + "4.6  fa-braille []\n" + " fa-briefcase []\n" + " fa-btc []\n" + " fa-bug []\n" + "4.1  fa-building []\n" + " fa-building-o []\n" + " fa-bullhorn []\n" + " fa-bullseye []\n" + "4.2  fa-bus []\n" + "4.3  fa-buysellads []\n" + "4.1  fa-cab (alias) []\n" + "4.2  fa-calculator []\n" + " fa-calendar []\n" + "4.4  fa-calendar-check-o []\n" + "4.4  fa-calendar-minus-o []\n" + " fa-calendar-o []\n" + "4.4  fa-calendar-plus-o []\n" + "4.4  fa-calendar-times-o []\n" + " fa-camera []\n" + " fa-camera-retro []\n" + "4.1  fa-car []\n" + " fa-caret-down []\n" + " fa-caret-left []\n" + " fa-caret-right []\n" + " fa-caret-square-o-down []\n" + "4.0  fa-caret-square-o-left []\n" + " fa-caret-square-o-right []\n" + " fa-caret-square-o-up []\n" + " fa-caret-up []\n" + "4.3  fa-cart-arrow-down []\n" + "4.3  fa-cart-plus []\n" + "4.2  fa-cc []\n" + "4.2  fa-cc-amex []\n" + "4.4  fa-cc-diners-club []\n" + "4.2  fa-cc-discover []\n" + "4.4  fa-cc-jcb []\n" + "4.2  fa-cc-mastercard []\n" + "4.2  fa-cc-paypal []\n" + "4.2  fa-cc-stripe []\n" + "4.2  fa-cc-visa []\n" + " fa-certificate []\n" + " fa-chain (alias) []\n" + " fa-chain-broken []\n" + " fa-check []\n" + " fa-check-circle []\n" + " fa-check-circle-o []\n" + " fa-check-square []\n" + " fa-check-square-o []\n" + " fa-chevron-circle-down []\n" + " fa-chevron-circle-left []\n" + " fa-chevron-circle-right []\n" + " fa-chevron-circle-up []\n" + " fa-chevron-down []\n" + " fa-chevron-left []\n" + " fa-chevron-right []\n" + " fa-chevron-up []\n" + "4.1  fa-child []\n" + "4.4  fa-chrome []\n" + " fa-circle []\n" + " fa-circle-o []\n" + "4.1  fa-circle-o-notch []\n" + "4.1  fa-circle-thin []\n" + " fa-clipboard []\n" + " fa-clock-o []\n" + "4.4  fa-clone []\n" + " fa-close (alias) []\n" + " fa-cloud []\n" + " fa-cloud-download []\n" + " fa-cloud-upload []\n" + " fa-cny (alias) []\n" + " fa-code []\n" + " fa-code-fork []\n" + "4.1  fa-codepen []\n" + "4.5  fa-codiepie []\n" + " fa-coffee []\n" + " fa-cog []\n" + " fa-cogs []\n" + " fa-columns []\n" + " fa-comment []\n" + " fa-comment-o []\n" + "4.4  fa-commenting []\n" + "4.4  fa-commenting-o []\n" + " fa-comments []\n" + " fa-comments-o []\n" + " fa-compass []\n" + " fa-compress []\n" + "4.3  fa-connectdevelop []\n" + "4.4  fa-contao []\n" + " fa-copy (alias) []\n" + "4.2  fa-copyright []\n" + "4.4  fa-creative-commons []\n" + " fa-credit-card []\n" + "4.5  fa-credit-card-alt []\n" + " fa-crop []\n" + " fa-crosshairs []\n" + " fa-css3 []\n" + "4.1  fa-cube []\n" + "4.1  fa-cubes []\n" + " fa-cut (alias) []\n" + " fa-cutlery []\n" + " fa-dashboard (alias) []\n" + "4.3  fa-dashcube []\n" + "4.1  fa-database []\n" + "4.6  fa-deaf []\n" + "4.6  fa-deafness (alias) []\n" + " fa-dedent (alias) []\n" + "4.1  fa-delicious []\n" + " fa-desktop []\n" + "4.1  fa-deviantart []\n" + "4.3  fa-diamond []\n" + "4.1  fa-digg []\n" + " fa-dollar (alias) []\n" + "4.0  fa-dot-circle-o []\n" + " fa-download []\n" + " fa-dribbble []\n" + " fa-dropbox []\n" + "4.1  fa-drupal []\n" + "4.5  fa-edge []\n" + " fa-edit (alias) []\n" + " fa-eject []\n" + " fa-ellipsis-h []\n" + " fa-ellipsis-v []\n" + "4.1  fa-empire []\n" + " fa-envelope []\n" + " fa-envelope-o []\n" + "4.1  fa-envelope-square []\n" + "4.6  fa-envira []\n" + " fa-eraser []\n" + " fa-eur []\n" + " fa-euro (alias) []\n" + " fa-exchange []\n" + " fa-exclamation []\n" + " fa-exclamation-circle []\n" + " fa-exclamation-triangle []\n" + " fa-expand []\n" + "4.4  fa-expeditedssl []\n" + " fa-external-link []\n" + " fa-external-link-square []\n" + " fa-eye []\n" + " fa-eye-slash []\n" + "4.2  fa-eyedropper []\n" + "4.6  fa-fa (alias) []\n" + " fa-facebook []\n" + " fa-facebook-f (alias) []\n" + "4.3  fa-facebook-official []\n" + " fa-facebook-square []\n" + " fa-fast-backward []\n" + " fa-fast-forward []\n" + "4.1  fa-fax []\n" + " fa-feed (alias) []\n" + " fa-female []\n" + " fa-fighter-jet []\n" + " fa-file []\n" + "4.1  fa-file-archive-o []\n" + "4.1  fa-file-audio-o []\n" + "4.1  fa-file-code-o []\n" + "4.1  fa-file-excel-o []\n" + "4.1  fa-file-image-o []\n" + "4.1  fa-file-movie-o (alias) []\n" + " fa-file-o []\n" + "4.1  fa-file-pdf-o []\n" + "4.1  fa-file-photo-o (alias) []\n" + "4.1  fa-file-picture-o (alias) []\n" + "4.1  fa-file-powerpoint-o []\n" + "4.1  fa-file-sound-o (alias) []\n" + " fa-file-text []\n" + " fa-file-text-o []\n" + "4.1  fa-file-video-o []\n" + "4.1  fa-file-word-o []\n" + "4.1  fa-file-zip-o (alias) []\n" + " fa-files-o []\n" + " fa-film []\n" + " fa-filter []\n" + " fa-fire []\n" + " fa-fire-extinguisher []\n" + "4.4  fa-firefox []\n" + "4.6  fa-first-order []\n" + " fa-flag []\n" + " fa-flag-checkered []\n" + " fa-flag-o []\n" + " fa-flash (alias) []\n" + " fa-flask []\n" + " fa-flickr []\n" + " fa-floppy-o []\n" + " fa-folder []\n" + " fa-folder-o []\n" + " fa-folder-open []\n" + " fa-folder-open-o []\n" + " fa-font []\n" + "4.6  fa-font-awesome []\n" + "4.4  fa-fonticons []\n" + "4.5  fa-fort-awesome []\n" + "4.3  fa-forumbee []\n" + " fa-forward []\n" + " fa-foursquare []\n" + " fa-frown-o []\n" + "4.2  fa-futbol-o []\n" + " fa-gamepad []\n" + " fa-gavel []\n" + " fa-gbp []\n" + "4.1  fa-ge (alias) []\n" + " fa-gear (alias) []\n" + " fa-gears (alias) []\n" + "4.4  fa-genderless []\n" + "4.4  fa-get-pocket []\n" + "4.4  fa-gg []\n" + "4.4  fa-gg-circle []\n" + " fa-gift []\n" + "4.1  fa-git []\n" + "4.1  fa-git-square []\n" + " fa-github []\n" + " fa-github-alt []\n" + " fa-github-square []\n" + "4.6  fa-gitlab []\n" + " fa-gittip (alias) []\n" + " fa-glass []\n" + "4.6  fa-glide []\n" + "4.6  fa-glide-g []\n" + " fa-globe []\n" + "4.1  fa-google []\n" + " fa-google-plus []\n" + "4.6  fa-google-plus-circle (alias) []\n" + "4.6  fa-google-plus-official []\n" + " fa-google-plus-square []\n" + "4.2  fa-google-wallet []\n" + "4.1  fa-graduation-cap []\n" + " fa-gratipay []\n" + " fa-group (alias) []\n" + " fa-h-square []\n" + "4.1  fa-hacker-news []\n" + "4.4  fa-hand-grab-o (alias) []\n" + "4.4  fa-hand-lizard-o []\n" + " fa-hand-o-down []\n" + " fa-hand-o-left []\n" + " fa-hand-o-right []\n" + " fa-hand-o-up []\n" + "4.4  fa-hand-paper-o []\n" + "4.4  fa-hand-peace-o []\n" + "4.4  fa-hand-pointer-o []\n" + "4.4  fa-hand-rock-o []\n" + "4.4  fa-hand-scissors-o []\n" + "4.4  fa-hand-spock-o []\n" + "4.4  fa-hand-stop-o (alias) []\n" + "4.6  fa-hard-of-hearing (alias) []\n" + "4.5  fa-hashtag []\n" + " fa-hdd-o []\n" + "4.1  fa-header []\n" + " fa-headphones []\n" + " fa-heart []\n" + " fa-heart-o []\n" + "4.3  fa-heartbeat []\n" + "4.1  fa-history []\n" + " fa-home []\n" + " fa-hospital-o []\n" + "4.3  fa-hotel (alias) []\n" + "4.4  fa-hourglass []\n" + "4.4  fa-hourglass-1 (alias) []\n" + "4.4  fa-hourglass-2 (alias) []\n" + "4.4  fa-hourglass-3 (alias) []\n" + "4.4  fa-hourglass-end []\n" + "4.4  fa-hourglass-half []\n" + "4.4  fa-hourglass-o []\n" + "4.4  fa-hourglass-start []\n" + "4.4  fa-houzz []\n" + " fa-html5 []\n" + "4.4  fa-i-cursor []\n" + "4.2  fa-ils []\n" + " fa-image (alias) []\n" + " fa-inbox []\n" + " fa-indent []\n" + "4.4  fa-industry []\n" + " fa-info []\n" + " fa-info-circle []\n" + " fa-inr []\n" + "4.6  fa-instagram []\n" + "4.1  fa-institution (alias) []\n" + "4.4  fa-internet-explorer []\n" + "4.3  fa-intersex (alias) []\n" + "4.2  fa-ioxhost []\n" + " fa-italic []\n" + "4.1  fa-joomla []\n" + " fa-jpy []\n" + "4.1  fa-jsfiddle []\n" + " fa-key []\n" + " fa-keyboard-o []\n" + " fa-krw []\n" + "4.1  fa-language []\n" + " fa-laptop []\n" + "4.2  fa-lastfm []\n" + "4.2  fa-lastfm-square []\n" + " fa-leaf []\n" + "4.3  fa-leanpub []\n" + " fa-legal (alias) []\n" + " fa-lemon-o []\n" + " fa-level-down []\n" + " fa-level-up []\n" + "4.1  fa-life-bouy (alias) []\n" + "4.1  fa-life-buoy (alias) []\n" + "4.1  fa-life-ring []\n" + "4.1  fa-life-saver (alias) []\n" + " fa-lightbulb-o []\n" + "4.2  fa-line-chart []\n" + " fa-link []\n" + " fa-linkedin []\n" + " fa-linkedin-square []\n" + " fa-linux []\n" + " fa-list []\n" + " fa-list-alt []\n" + " fa-list-ol []\n" + " fa-list-ul []\n" + " fa-location-arrow []\n" + " fa-lock []\n" + " fa-long-arrow-down []\n" + " fa-long-arrow-left []\n" + " fa-long-arrow-right []\n" + " fa-long-arrow-up []\n" + "4.6  fa-low-vision []\n" + " fa-magic []\n" + " fa-magnet []\n" + " fa-mail-forward (alias) []\n" + " fa-mail-reply (alias) []\n" + " fa-mail-reply-all (alias) []\n" + " fa-male []\n" + "4.4  fa-map []\n" + " fa-map-marker []\n" + "4.4  fa-map-o []\n" + "4.4  fa-map-pin []\n" + "4.4  fa-map-signs []\n" + "4.3  fa-mars []\n" + "4.3  fa-mars-double []\n" + "4.3  fa-mars-stroke []\n" + "4.3  fa-mars-stroke-h []\n" + "4.3  fa-mars-stroke-v []\n" + " fa-maxcdn []\n" + "4.2  fa-meanpath []\n" + "4.3  fa-medium []\n" + " fa-medkit []\n" + " fa-meh-o []\n" + "4.3  fa-mercury []\n" + " fa-microphone []\n" + " fa-microphone-slash []\n" + " fa-minus []\n" + " fa-minus-circle []\n" + " fa-minus-square []\n" + " fa-minus-square-o []\n" + "4.5  fa-mixcloud []\n" + " fa-mobile []\n" + " fa-mobile-phone (alias) []\n" + "4.5  fa-modx []\n" + " fa-money []\n" + " fa-moon-o []\n" + "4.1  fa-mortar-board (alias) []\n" + "4.3  fa-motorcycle []\n" + "4.4  fa-mouse-pointer []\n" + " fa-music []\n" + " fa-navicon (alias) []\n" + "4.3  fa-neuter []\n" + "4.2  fa-newspaper-o []\n" + "4.4  fa-object-group []\n" + "4.4  fa-object-ungroup []\n" + "4.4  fa-odnoklassniki []\n" + "4.4  fa-odnoklassniki-square []\n" + "4.4  fa-opencart []\n" + "4.1  fa-openid []\n" + "4.4  fa-opera []\n" + "4.4  fa-optin-monster []\n" + " fa-outdent []\n" + "4.0  fa-pagelines []\n" + "4.2  fa-paint-brush []\n" + "4.1  fa-paper-plane []\n" + "4.1  fa-paper-plane-o []\n" + " fa-paperclip []\n" + "4.1  fa-paragraph []\n" + " fa-paste (alias) []\n" + " fa-pause []\n" + "4.5  fa-pause-circle []\n" + "4.5  fa-pause-circle-o []\n" + "4.1  fa-paw []\n" + "4.2  fa-paypal []\n" + " fa-pencil []\n" + " fa-pencil-square []\n" + " fa-pencil-square-o []\n" + "4.5  fa-percent []\n" + " fa-phone []\n" + " fa-phone-square []\n" + " fa-photo (alias) []\n" + " fa-picture-o []\n" + "4.2  fa-pie-chart []\n" + "4.6  fa-pied-piper []\n" + "4.1  fa-pied-piper-alt []\n" + "4.1  fa-pied-piper-pp []\n" + " fa-pinterest []\n" + "4.3  fa-pinterest-p []\n" + " fa-pinterest-square []\n" + " fa-plane []\n" + " fa-play []\n" + " fa-play-circle []\n" + " fa-play-circle-o []\n" + "4.2  fa-plug []\n" + " fa-plus []\n" + " fa-plus-circle []\n" + " fa-plus-square []\n" + "4.0  fa-plus-square-o []\n" + " fa-power-off []\n" + " fa-print []\n" + "4.5  fa-product-hunt []\n" + " fa-puzzle-piece []\n" + "4.1  fa-qq []\n" + " fa-qrcode []\n" + " fa-question []\n" + " fa-question-circle []\n" + "4.6  fa-question-circle-o []\n" + " fa-quote-left []\n" + " fa-quote-right []\n" + "4.1  fa-ra (alias) []\n" + " fa-random []\n" + "4.1  fa-rebel []\n" + "4.1  fa-recycle []\n" + "4.1  fa-reddit []\n" + "4.5  fa-reddit-alien []\n" + "4.1  fa-reddit-square []\n" + " fa-refresh []\n" + "4.4  fa-registered []\n" + " fa-remove (alias) []\n" + " fa-renren []\n" + " fa-reorder (alias) []\n" + " fa-repeat []\n" + " fa-reply []\n" + " fa-reply-all []\n" + "4.1  fa-resistance (alias) []\n" + " fa-retweet []\n" + " fa-rmb (alias) []\n" + " fa-road []\n" + " fa-rocket []\n" + " fa-rotate-left (alias) []\n" + " fa-rotate-right (alias) []\n" + "4.0  fa-rouble (alias) []\n" + " fa-rss []\n" + " fa-rss-square []\n" + "4.0  fa-rub []\n" + "4.0  fa-ruble (alias) []\n" + " fa-rupee (alias) []\n" + "4.4  fa-safari []\n" + " fa-save (alias) []\n" + " fa-scissors []\n" + "4.5  fa-scribd []\n" + " fa-search []\n" + " fa-search-minus []\n" + " fa-search-plus []\n" + "4.3  fa-sellsy []\n" + "4.1  fa-send (alias) []\n" + "4.1  fa-send-o (alias) []\n" + "4.3  fa-server []\n" + " fa-share []\n" + "4.1  fa-share-alt []\n" + "4.1  fa-share-alt-square []\n" + " fa-share-square []\n" + " fa-share-square-o []\n" + "4.2  fa-shekel (alias) []\n" + "4.2  fa-sheqel (alias) []\n" + " fa-shield []\n" + "4.3  fa-ship []\n" + "4.3  fa-shirtsinbulk []\n" + "4.5  fa-shopping-bag []\n" + "4.5  fa-shopping-basket []\n" + " fa-shopping-cart []\n" + " fa-sign-in []\n" + "4.6  fa-sign-language []\n" + " fa-sign-out []\n" + " fa-signal []\n" + "4.6  fa-signing (alias) []\n" + "4.3  fa-simplybuilt []\n" + " fa-sitemap []\n" + "4.3  fa-skyatlas []\n" + " fa-skype []\n" + "4.1  fa-slack []\n" + "4.1  fa-sliders []\n" + "4.2  fa-slideshare []\n" + " fa-smile-o []\n" + "4.6  fa-snapchat []\n" + "4.6  fa-snapchat-ghost []\n" + "4.6  fa-snapchat-square []\n" + "4.2  fa-soccer-ball-o (alias) []\n" + " fa-sort []\n" + " fa-sort-alpha-asc []\n" + " fa-sort-alpha-desc []\n" + " fa-sort-amount-asc []\n" + " fa-sort-amount-desc []\n" + " fa-sort-asc []\n" + " fa-sort-desc []\n" + " fa-sort-down (alias) []\n" + " fa-sort-numeric-asc []\n" + " fa-sort-numeric-desc []\n" + " fa-sort-up (alias) []\n" + "4.1  fa-soundcloud []\n" + "4.1  fa-space-shuttle []\n" + " fa-spinner []\n" + "4.1  fa-spoon []\n" + "4.1  fa-spotify []\n" + " fa-square []\n" + " fa-square-o []\n" + "4.0  fa-stack-exchange []\n" + " fa-stack-overflow []\n" + " fa-star []\n" + " fa-star-half []\n" + " fa-star-half-empty (alias) []\n" + " fa-star-half-full (alias) []\n" + " fa-star-half-o []\n" + " fa-star-o []\n" + "4.1  fa-steam []\n" + "4.1  fa-steam-square []\n" + " fa-step-backward []\n" + " fa-step-forward []\n" + " fa-stethoscope []\n" + "4.4  fa-sticky-note []\n" + "4.4  fa-sticky-note-o []\n" + " fa-stop []\n" + "4.5  fa-stop-circle []\n" + "4.5  fa-stop-circle-o []\n" + "4.3  fa-street-view []\n" + " fa-strikethrough []\n" + "4.1  fa-stumbleupon []\n" + "4.1  fa-stumbleupon-circle []\n" + " fa-subscript []\n" + "4.3  fa-subway []\n" + " fa-suitcase []\n" + " fa-sun-o []\n" + " fa-superscript []\n" + "4.1  fa-support (alias) []\n" + " fa-table []\n" + " fa-tablet []\n" + " fa-tachometer []\n" + " fa-tag []\n" + " fa-tags []\n" + " fa-tasks []\n" + "4.1  fa-taxi []\n" + "4.4  fa-television []\n" + "4.1  fa-tencent-weibo []\n" + " fa-terminal []\n" + " fa-text-height []\n" + " fa-text-width []\n" + " fa-th []\n" + " fa-th-large []\n" + " fa-th-list []\n" + "4.6  fa-themeisle []\n" + " fa-thumb-tack []\n" + " fa-thumbs-down []\n" + " fa-thumbs-o-down []\n" + " fa-thumbs-o-up []\n" + " fa-thumbs-up []\n" + " fa-ticket []\n" + " fa-times []\n" + " fa-times-circle []\n" + " fa-times-circle-o []\n" + " fa-tint []\n" + " fa-toggle-down (alias) []\n" + "4.0  fa-toggle-left (alias) []\n" + "4.2  fa-toggle-off []\n" + "4.2  fa-toggle-on []\n" + " fa-toggle-right (alias) []\n" + " fa-toggle-up (alias) []\n" + "4.4  fa-trademark []\n" + "4.3  fa-train []\n" + "4.3  fa-transgender []\n" + "4.3  fa-transgender-alt []\n" + "4.2  fa-trash []\n" + " fa-trash-o []\n" + "4.1  fa-tree []\n" + " fa-trello []\n" + "4.4  fa-tripadvisor []\n" + " fa-trophy []\n" + " fa-truck []\n" + "4.0  fa-try []\n" + "4.2  fa-tty []\n" + " fa-tumblr []\n" + " fa-tumblr-square []\n" + "4.0  fa-turkish-lira (alias) []\n" + "4.4  fa-tv (alias) []\n" + "4.2  fa-twitch []\n" + " fa-twitter []\n" + " fa-twitter-square []\n" + " fa-umbrella []\n" + " fa-underline []\n" + " fa-undo []\n" + "4.6  fa-universal-access []\n" + "4.1  fa-university []\n" + " fa-unlink (alias) []\n" + " fa-unlock []\n" + " fa-unlock-alt []\n" + " fa-unsorted (alias) []\n" + " fa-upload []\n" + "4.5  fa-usb []\n" + " fa-usd []\n" + " fa-user []\n" + " fa-user-md []\n" + "4.3  fa-user-plus []\n" + "4.3  fa-user-secret []\n" + "4.3  fa-user-times []\n" + " fa-users []\n" + "4.3  fa-venus []\n" + "4.3  fa-venus-double []\n" + "4.3  fa-venus-mars []\n" + "4.3  fa-viacoin []\n" + "4.6  fa-viadeo []\n" + "4.6  fa-viadeo-square []\n" + " fa-video-camera []\n" + "4.4  fa-vimeo []\n" + "4.0  fa-vimeo-square []\n" + "4.1  fa-vine []\n" + " fa-vk []\n" + "4.6  fa-volume-control-phone []\n" + " fa-volume-down []\n" + " fa-volume-off []\n" + " fa-volume-up []\n" + " fa-warning (alias) []\n" + "4.1  fa-wechat (alias) []\n" + " fa-weibo []\n" + "4.1  fa-weixin []\n" + "4.3  fa-whatsapp []\n" + "4.0  fa-wheelchair []\n" + "4.6  fa-wheelchair-alt []\n" + "4.2  fa-wifi []\n" + "4.4  fa-wikipedia-w []\n" + " fa-windows []\n" + " fa-won (alias) []\n" + "4.1  fa-wordpress []\n" + "4.6  fa-wpbeginner []\n" + "4.6  fa-wpforms []\n" + " fa-wrench []\n" + " fa-xing []\n" + " fa-xing-square []\n" + "4.4  fa-y-combinator []\n" + "4.1  fa-y-combinator-square (alias) []\n" + "4.1  fa-yahoo []\n" + "4.4  fa-yc (alias) []\n" + "4.1  fa-yc-square (alias) []\n" + "4.2  fa-yelp []\n" + " fa-yen (alias) []\n" + "4.6  fa-yoast []\n" + " fa-youtube []\n" + " fa-youtube-play []\n" + " fa-youtube-square []\n"; final String subst = "\\2\\t\\3\\t\\1\\n"; final Pattern pattern = Pattern.compile(regex); 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