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

/
/
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 = "<[^>]+>"; final String string = "\n" + "<!DOCTYPE html>\n" + "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n" + "<head>\n" + " <title>Online regex tester and debugger: JavaScript, Python, PHP, and PCRE</title>\n" + " <link href=\"//fonts.googleapis.com/css?family=Open+Sans:400,700,300&amp;subset=latin\" rel=\"stylesheet\" type=\"text/css\">\n" + " <link href=\"/css/main.1433274325.css\" rel=\"stylesheet\" type=\"text/css\">\n" + " <link type=\"text/plain\" rel=\"author\" href=\"//regex101.com/humans.txt\">\n" + " <link rel=\"icon\" href=\"/favicon.ico\" type=\"image/x-icon\">\n" + " <link href=\"//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css\" rel=\"stylesheet\">\n" + " <meta charset=\"utf-8\">\n" + " <meta name=\"viewport\" content=\"width=device-width, initial-scale=1, maximum-scale=1\">\n" + " <meta name=\"keywords\" content=\"javascript,regex,regular expression,debugger,explainer,helper,tester,match,pcre,python,editor\">\n" + " <meta name=\"description\" content=\"Online regex tester, debugger with highlighting for PHP, PCRE, Python and JavaScript.\">\n" + " <meta name=\"author\" content=\"Firas Dib\">\n" + " <meta property=\"twitter:card\" content=\"summary\">\n" + " <meta property=\"twitter:site\" content=\"@regex101\">\n" + " <meta property=\"twitter:title\" content=\"Regex101 - online regex editor and debugger\">\n" + " <meta property=\"twitter:description\" content=\"Regex101 allows you to create, debug, test and have your expressions explained for PHP, PCRE, JavaScript and Python. The website also features a community where you can share useful expressions.\">\n" + " <meta property=\"twitter:creator\" content=\"@regex101\">\n" + " <meta property=\"twitter:image\" content=\"//regex101.com/gfx/preview.png\">\n" + " <meta property=\"twitter:domain\" content=\"regex101.com\">\n" + "</head>\n" + "<body class=\"box_overflow_fix light default\" spellcheck=\"false\">\n" + " <div id=\"header_parent\">\n" + " <div id=\"header\">\n" + " <div id=\"header_menu\">\n" + " <a target=\"_blank\" href=\"https://twitter.com/regex101\"><i class=\"fa fa-twitter-square \"></i><span class=\"large_menu\">RegEx101</span></a>\n" + " <a target=\"_blank\" href=\"https://www.paypal.com/cgi-bin/webscr?cmd=_donations&amp;business=firas%2edib%40gmail%2ecom&amp;lc=US&amp;item_name=Regex101&amp;no_note=0&amp;currency_code=USD&amp;bn=PP%2dDonationsBF%3abtn_donate_SM%2egif%3aNonHostedGuest\"><i class=\"fa fa-dollar\"></i><span class=\"large_menu\">Donate</span></a>\n" + " <a target=\"_blank\" href=\"mailto:contact@regex101.com\"><i class=\"fa fa-send\"></i><span class=\"large_menu\">Contact</span></a> \n" + " <a target=\"_blank\" href=\"https://github.com/firasdib/Regex101/issues\"><i class=\"fa fa-exclamation-triangle\"></i><span class=\"large_menu\">Bug reports &amp; Suggestions</span></a>\n" + " <div id=\"settings_popup\">\n" + " <span class=\"fa-stack fa-lg\" id=\"settings\" title=\"Adjust settings and theme\">\n" + " <i class=\"fa fa-circle fa-stack-2x\"></i>\n" + " <i class=\"fa fa-wrench fa-stack-1x\"></i>\n" + " </span>\n" + " <span class=\"fa-stack fa-lg\" id=\"sign_in_out\" title=\"Sign in\">\n" + " <i class=\"fa fa-circle fa-stack-2x\"></i>\n" + " <i class=\"fa fa-sign-in fa-stack-1x\"></i>\n" + " </span>\n" + " </div>\n" + " \n" + " </div>\n" + " <div class=\"text_overflow\">\n" + " <h1 id=\"logo\">\n" + " <a href=\"/\">\n" + " <div id=\"large_header\"><span class=\"part1\">regular</span> <span class=\"part2\">expressions</span> <span class=\"part3\">101</span></div>\n" + " <div id=\"small_header\"><span class=\"part1\">reg</span><span class=\"part2\">ex</span> <span class=\"part3\">101</span></div>\n" + " </a>\n" + " </h1>\n" + " <ul id=\"header_nav\">\n" + " <li class=\"fullscreen header_nav active main_menu main\" data-id=\"40\">\n" + " <i class=\"fa fa-terminal\"></i><span class=\"large_menu\">Regex Tester</span>\n" + " </li>\n" + " <li class=\"fullscreen header_nav main_menu community\" data-id=\"43\">\n" + " <i class=\"fa fa-cloud\"></i><span class=\"large_menu\">Regex Library</span>\n" + " </li>\n" + " <li class=\"fullscreen header_nav main_menu\" data-id=\"42\">\n" + " <a target=\"_blank\" href=\"http://webchat.freenode.net/?nick=regex101-....&amp;channels=regex\" id=\"irc\">\n" + " <i class=\"fa fa-comments\"></i><span class=\"large_menu\">IRC</span>\n" + " </a>\n" + " </li>\n" + " </ul>\n" + " </div>\n" + " </div>\n" + " </div>\n" + " <div id=\"settings_popup_contents\">\n" + " <div class=\"left\">\n" + " <div class=\"label\"><i class=\"fa fa-gear settings\"></i> General Settings</div>\n" + " <input type=\"checkbox\" id=\"display_whitespace\" name=\"display_whitespace\" tabindex=\"999\" value=\"1\" data-id=\"1\">\n" + " <label class=\"design_label\" for=\"display_whitespace\">\n" + " <span></span>Display Whitespace\n" + " </label>\n" + " <input type=\"checkbox\" id=\"small_menu\" name=\"small_menu\" tabindex=\"999\" value=\"1\" data-id=\"201\">\n" + " <label class=\"design_label\" for=\"small_menu\">\n" + " <span></span>Use minimal view\n" + " </label>\n" + " <div class=\"label\"><i class=\"fa fa-picture-o theme\"></i> Theme</div>\n" + " <input type=\"radio\" id=\"light_theme\" name=\"theme\" tabindex=\"999\" value=\"1\" data-id=\"203\" checked=\"checked\">\n" + " <label class=\"design_label\" for=\"light_theme\">\n" + " <span></span>Use light theme\n" + " </label>\n" + " <input type=\"radio\" id=\"dark_theme\" name=\"theme\" tabindex=\"999\" value=\"1\" data-id=\"200\">\n" + " <label class=\"design_label\" for=\"dark_theme\">\n" + " <span></span>Use dark theme\n" + " </label>\n" + " </div>\n" + " <div class=\"right\">\n" + " <div id=\"colorizer_themes\">\n" + " <div class=\"label\"><i class=\"fa fa-terminal regex\"></i> Regex Settings</div>\n" + " <input type=\"checkbox\" id=\"colorize_regex\" name=\"colorize_regex\" tabindex=\"999\" value=\"1\" data-id=\"9\">\n" + " <label class=\"design_label\" for=\"colorize_regex\">\n" + " <span></span>Colorize syntax\n" + " </label>\n" + " <div class=\"select_themes\">\n" + " <strong>Theme:</strong>\n" + " <select class=\"light_themes\" data-id=\"999\">\n" + " <option value=\"default\">Default</option>\n" + " <option value=\"default_light\">Default - Light</option>\n" + " </select><select class=\"dark_themes\" data-id=\"999\">\n" + " <option value=\"default\">Default</option>\n" + " </select>\n" + " </div>\n\n" + " <input type=\"checkbox\" id=\"smart_completion\" name=\"smart_completion\" tabindex=\"999\" value=\"1\" data-id=\"210\">\n" + " <label class=\"design_label\" for=\"smart_completion\">\n" + " <span></span>Enable smart auto-completion\n" + " </label>\n" + " <input type=\"checkbox\" id=\"wrap_newlines\" name=\"wrap_newlines\" tabindex=\"999\" value=\"1\" data-id=\"10\">\n" + " <label class=\"design_label\" for=\"wrap_newlines\">\n" + " <span></span>Wrap long lines\n" + " </label>\n" + " <input type=\"checkbox\" id=\"highlight_interaction\" name=\"highlight_interaction\" tabindex=\"999\" value=\"0\" data-id=\"220\">\n" + " <label class=\"design_label\" for=\"highlight_interaction\">\n" + " <span></span>Highlight groups\n" + " </label>\n" + " <input type=\"checkbox\" id=\"display_nonpart\" name=\"display_nonpart\" tabindex=\"999\" value=\"0\" data-id=\"221\">\n" + " <label class=\"design_label\" for=\"display_nonpart\">\n" + " <span></span>Show non-participating groups\n" + " </label>\n" + " <div class=\"execution_limit\">\n" + " <label class=\"design_label\" for=\"execution_limit\">Max execution time:</label>\n" + " <input type=\"text\" name=\"execution_limit\" id=\"execution_limit\" placeholder=\"2000\"><em>ms</em>\n" + " </div>\n" + " </div>\n" + " <!--li id=\"dark_theme\" data-id=\"200\" class=\"menu_item\">\n" + " <i class=\"fa fa-picture-o\"></i><span class=\"large_menu\">Use dark theme</span>\n" + " </li-->\n" + " </div>\n" + " <div class=\"arrow-box-tip reverse\"></div>\n" + " </div>\n" + " <div class=\"denial_of_service\" id=\"splash\">\n" + " <div>\n" + " Initializing editor, please stand by... <i class=\"fa fa-cog fa-spin\"></i>\n" + " </div>\n" + " </div>\n" + " <div class=\"denial_of_service\" id=\"loading_screen\">\n" + " <div>\n" + " Loading content, please hold... <i class=\"fa fa-cog fa-spin\"></i>\n" + " </div>\n" + " </div>\n\n" + " <noscript>\n" + " <div class=\"denial_of_service\">\n" + " <div>\n" + " It seems like you have JavaScript disabled, rendering this website virtually useless.\n" + " Please enable JavaScript to use this service. If you don't know how, try <a href=\"http://enable-javascript.com/\">this</a>.\n" + " </div>\n" + " </div>\n" + " </noscript>\n" + " <div class=\"denial_of_service\" id=\"old_browser\">\n" + " <div>You seem to be using an outdated version of your browser which is no longer supported by <strong>regex101.com</strong>. It is highly recommended that you upgrade your browser. Sorry for the inconvenience.</div>\n" + " </div>\n" + "<div id=\"inline_menu\" class=\"box_overflow_fix general_menu\">\n" + " <ul class=\"first-ul overflow_handler\">\n" + " <li class=\"regex_menu extension_menu share_menu\">\n" + " <ul>\n" + " <li class=\"menu_notice\">Save &amp; Share</li>\n" + " <li id=\"permalink_menu\" class=\"menu_item disabled\" data-id=\"3\" data-permalink=\"\" data-version=\"\">\n" + " <i class=\"fa fa-save\"></i><span class=\"large_menu\">Save Regex (CTRL+S)</span>\n" + " </li>\n" + " <li id=\"permalink_fork\" class=\"menu_item\" data-id=\"900\" style=\"display: none;\">\n" + " <i class=\"fa fa-code-fork\"></i><span class=\"large_menu\">Fork Regex</span>\n" + " </li>\n" + " <li class=\"menu_item unique disabled\" data-id=\"4\" id=\"community_submit\">\n" + " <i class=\"fa fa-cloud-upload\"></i><span class=\"large_menu\">Add to Regex Library</span>\n" + " </li>\n" + " </ul>\n" + " </li>\n" + " <li class=\"regex_menu extension_menu no_top_space\">\n" + " <ul>\n" + " <li class=\"menu_notice\">Flavor</li>\n" + " <li class=\"flavor_pcre menu_item active\" data-id=\"20\">\n" + " <span class=\"mini_menu\">PCRE</span>\n" + " <span class=\"large_menu\"><i class=\"fa fa-file\"></i>PCRE (PHP)</span>\n" + " </li>\n" + " <li class=\"flavor_js menu_item \" data-id=\"21\">\n" + " <span class=\"mini_menu\">JS</span>\n" + " <span class=\"large_menu\"><i class=\"fa fa-file\"></i>JavaScript</span>\n" + " </li>\n" + " <li class=\"flavor_python menu_item \" data-id=\"22\">\n" + " <span class=\"mini_menu\">PY</span>\n" + " <span class=\"large_menu\"><i class=\"fa fa-file\"></i>Python</span>\n" + " </li>\n" + " </ul>\n" + " </li>\n" + " <li class=\"regex_menu extension_menu\" id=\"tools_menu\">\n" + " <ul>\n" + " <li class=\"menu_notice\">Tools</li>\n" + " <li class=\"menu_item\" data-id=\"50\" id=\"format_regex\">\n" + " <i class=\"fa fa-indent\"></i><span class=\"large_menu\">Format Regex (requires free-spacing, /x)</span>\n" + " </li>\n" + " <li class=\"menu_item unique fullscreen disabled menu_toggle\" data-id=\"8\" id=\"sample_menu\">\n" + " <i class=\"fa fa-code\"></i><span class=\"large_menu\">Code Generator</span>\n" + " </li>\n" + " <li class=\"menu_item unique disabled fullscreen menu_toggle\" data-id=\"7\" id=\"debugger_menu\">\n" + " <i class=\"fa fa-bug\"></i><span class=\"large_menu\">Regex Debugger</span>\n" + " </li>\n" + " <li class=\"menu_item menu_toggle\" data-id=\"99\" id=\"unit_tests\">\n" + " <i class=\"fa fa-check\"></i><span class=\"large_menu\"><span class=\"unit_test_player\"><i class=\"fa fa-play run_tests\" title=\"Run tests (CTRL+K)\"></i><span class=\"unit_result\">n/a</span><span class=\"unit_progress\"></span></span><span class=\"text_overflow\">Unit tests</span></span>\n" + " </li>\n" + " </ul>\n" + " </li>\n" + " <li id=\"filter_menu\" class=\"extension_menu community_menu no_top_space\">\n" + " <ul>\n" + " <li class=\"menu_notice\">Filter flavors</li>\n" + " <li class=\"flavor_pcre menu_item active\" data-id=\"100\" data-flavor-id=\"1\">\n" + " <span class=\"mini_menu\">PCRE</span>\n" + " <span class=\"large_menu\"><i class=\"fa fa-file\"></i>PCRE (PHP)</span>\n" + " </li>\n" + " <li class=\"flavor_js menu_item active\" data-id=\"101\" data-flavor-id=\"2\">\n" + " <span class=\"mini_menu\">JS</span>\n" + " <span class=\"large_menu\"><i class=\"fa fa-file\"></i>JavaScript</span>\n" + " </li>\n" + " <li class=\"flavor_python menu_item active\" data-id=\"102\" data-flavor-id=\"3\">\n" + " <span class=\"mini_menu\">PY</span>\n" + " <span class=\"large_menu\"><i class=\"fa fa-file\"></i>Python</span>\n" + " </li>\n" + " </ul>\n" + " </li>\n" + " <li class=\"account_submenu extension_menu\">\n" + " <ul>\n" + " <li class=\"menu_notice\">Filter type</li>\n" + " <li class=\"menu_item active\" data-id=\"300\" id=\"only_fav\"><i class=\"fa fa-star\"></i><span class=\"large_menu\">View favorites</span></li>\n" + " <li class=\"menu_item active\" data-id=\"301\" id=\"only_contrib\"><i class=\"fa fa-bookmark-o\"></i><span class=\"large_menu\">View contributions</span></li>\n" + " </ul>\n" + " </li>\n" + " <li class=\"donate_submenu extension_menu\">\n" + " <ul>\n" + " <li class=\"menu_item\"><a target=\"_blank\" href=\"https://www.paypal.com/cgi-bin/webscr?cmd=_donations&amp;business=firas%2edib%40gmail%2ecom&amp;lc=US&amp;item_name=Regex101&amp;no_note=0&amp;currency_code=USD&amp;bn=PP%2dDonationsBF%3abtn_donate_SM%2egif%3aNonHostedGuest\"><i class=\"fa-dollar fa\"></i><span class=\"large_menu\" data-txt=\"Thank you!\">Consider a donation</span></a></li>\n" + " </ul>\n" + " </li>\n" + " </ul>\n" + "</div>\n" + "<div id=\"content\">\n" + " <div id=\"community\" class=\"box_overflow_fix extension_window\"></div>\n" + " <div id=\"account\" class=\"box_overflow_fix extension_window\"></div>\n" + " \n" + " <div id=\"regex_editor\" class=\"box_overflow_fix\">\n" + " <div id=\"code_samples\" class=\"extension_window box_overflow_fix overflow_handler\"></div>\n\n\n" + " <div id=\"regex_debugger\" class=\"box_overflow_fix extension_window\">\n" + " <div id=\"regex_debugger_bg\" class=\"box_overflow_fix\">\n" + " <div class=\"label\" id=\"debugger_label\">Status: Fetching debug info...</div>\n\n" + " <div id=\"label_container\" class=\"monospace\">\n" + " <input type=\"checkbox\" id=\"show_regex_pos\" name=\"show_regex_pos\" tabindex=\"999\" value=\"1\" checked=\"checked\"/>\n" + " <label class=\"design_label\" for=\"show_regex_pos\">\n" + " <span></span>Display position in pattern\n" + " </label>\n" + " \n" + " <input type=\"checkbox\" id=\"internal_opt\" name=\"internal_opt\" tabindex=\"999\" value=\"1\"/>\n" + " <label class=\"design_label\" for=\"internal_opt\">\n" + " <span></span>Disable internal engine optimizations\n" + " </label>\n\n" + " <a href=\"#\" id=\"debugger_collapse\">collapse all</a>\n" + " </div>\n\n" + " </div>\n" + " <div id=\"regex_debugger_window\" class=\"overflow_handler\">\n" + " <div class=\"debugger_loader_padding\"></div>\n" + " </div>\n" + " </div>\n\n\n" + " <div id=\"main_editor\" class=\"flex-container box_overflow_fix\">\n" + " <div id=\"regex_container\" class=\"flex-regex box_overflow_fix\">\n" + " <label for=\"regex\">\n" + " Regular Expression\n" + " <div id=\"version_container\" style=\"display: none;\">\n" + " &mdash;\n" + " <select id=\"version_selector\">\n" + " </select>\n" + " </div>\n" + " <span id=\"result_indicator\" class=\"no_match\">no match</span>\n" + " </label>\n\n" + " <div id=\"regex_input\" class=\"box_overflow_fix richtext_parent\">\n" + " <div id=\"delimiter_selector\" class=\"richtext_left slash_menu slash box_overflow_fix\" data-dropdown=\".delimiter-dropdown\">/</div>\n" + " <div class=\"richtext_right\">\n" + " <div class=\"slash slash_menu\" data-dropdown=\".delimiter-dropdown\">/</div><!--\n" + " --><div id=\"options_container\">\n" + " <input data-focus=\"#options_container\" value=\"\" id=\"options\" name=\"options\" size=\"20\" tabindex=\"2\" type=\"text\" placeholder=\"gmixXsuUAJ\"/>\n" + " <i id=\"options_helper\" class=\"fa fa-question-circle\"></i>\n" + " </div>\n" + " <div id=\"options_helper_contents\"></div>\n" + " </div>\n" + " <div class=\"richtext_padding\">\n" + " <div class=\"richtext_container\" id=\"richtext_regex_container\">\n" + " <div class=\"richtext\" id=\"richtext_regex\">\n" + " <pre><span class=\"colorizer_height\"></span><br/></pre>\n" + " <pre id=\"regex_colors\"><span></span><br/></pre>\n" + " <textarea data-focus=\"#richtext_regex_container\" spellcheck=\"false\" id=\"regex\" name=\"regex\" tabindex=\"1\" rows=\"1\" cols=\"50\" placeholder=\"insert your regular expression here\" autofocus=\"autofocus\"></textarea>\n" + " </div>\n" + " </div>\n" + " </div>\n" + " </div>\n" + " </div>\n\n\n" + " <div id=\"test_result_container\" class=\"box_overflow_fix flex-text \">\n" + " <label for=\"regex_string\">Test string</label>\n" + " <div class=\"overflow_handler flex-grow\">\n" + " <div class=\"richtext\" id=\"richtext_test\">\n" + " <pre><span id=\"richtext_test_size\"></span><br>&nbsp;</pre>\n" + " <pre id=\"richtext_test_colors\"><span id=\"test_color_element\"></span><br></pre>\n" + " <textarea wrap=\"off\" data-focus=\"#test_result_container .overflow_handler\" spellcheck=\"false\" id=\"regex_string\" class=\"box_overflow_fix\" name=\"test\" rows=\"10\" tabindex=\"3\" placeholder=\"insert your test string here\"></textarea>\n" + " </div>\n" + " </div>\n" + " </div>\n\n" + " <div id=\"subst_parent\" class=\"box_overflow_fix flex-sub \">\n" + " <label for=\"sub\" class=\"expander collapsed\">\n" + " <span class=\"fa fa-plus-circle\"></span>Substitution\n" + " </label>\n" + " <div id=\"subst_container\" class=\"overflow_handler flex-grow\">\n" + " <input class=\"box_overflow_fix\" value=\"\" id=\"sub\" name=\"sub\" tabindex=\"3\" type=\"text\" placeholder=\"substitution; \\num = backreference, \\n = newline, \\t = tab\">\n" + " <div id=\"subst_area\" class=\"overflow_handler flex-grow\">\n" + " <div contenteditable=\"true\" id=\"subst_result\" class=\"monospace hard_break box_overflow_fix\"></div>\n" + " </div>\n" + " </div>\n" + " </div>\n\n" + " <div id=\"unit_tests_builder\" class=\"box_overflow_fix flex-unit-builder\">\n" + " <div class=\"label\">Create test<div class=\"right\"><a href=\"#\" class=\"button\" tabindex=\"23\">Add test</a></div></div>\n" + " <div id=\"unit_test_creator\" class=\"box_overflow_fix\">\n" + " <div class=\"test_builder\">\n" + " <div class=\"the_test pt1\">\n" + " <div class=\"left\">given the string</div>\n" + " <div class=\"right\"><textarea tabindex=\"19\" class=\"box_overflow_fix\" id=\"unit_data\" placeholder=\"test string\"></textarea></div>\n" + " </div>\n" + " <div class=\"the_test pt2\">\n" + " <div class=\"left\"><span>assert that</span><select id=\"unit_type\" tabindex=\"20\"></select><select tabindex=\"21\" id=\"assert_type\"></select></div>\n" + " <div class=\"right\"><textarea tabindex=\"22\" class=\"box_overflow_fix\" id=\"assert_equals\" type=\"text\" placeholder=\"string value\"></textarea></div>\n" + " </div>\n" + " </div>\n" + " </div>\n" + " </div>\n" + " <div id=\"unit_tests_list\" class=\"box_overflow_fix flex-unit-list\">\n" + " <div class=\"label\">Test list<div class=\"right unit_test_player\"><i class=\"fa fa-play run_tests\" title=\"Run tests (CTRL+K)\"></i><span class=\"unit_result\">n/a</span></div></div>\n" + " <div id=\"unit_test_window\" class=\"unit_test_window flex-grow overflow_handler\">\n" + " <div class=\"all_tests\">\n" + " <div id=\"unit_test_container\">\n" + " </div>\n" + " </div>\n" + " </div>\n" + " </div>\n\n" + " \n" + " </div>\n\n\n" + " <div id=\"regex_treeview\" class=\"box_overflow_fix\">\n" + " <div id=\"treeview_resizer\" title=\"Keep dragging\"><div></div></div>\n" + " <div id=\"treeview_content\" class=\"box_overflow_fix flex-container\">\n" + " <div id=\"scroll_treeview\" class=\"box_overflow_fix flex-elem\">\n\n" + " <div id=\"explainer_label\" class=\"label expander\">\n" + " <span class=\"fa\"></span>Explanation\n" + " </div>\n" + " <div class=\"overflow_handler box_overflow_fix flex-grow\">\n" + " <div id=\"treeview\" style=\"height: 100%\">\n" + " An explanation of your regex will be automatically generated as you type.\n" + " </div>\n" + " </div>\n\n" + " </div>\n" + " <div id=\"scroll_match\" class=\"box_overflow_fix flex-elem\">\n\n" + " <div id=\"match_label\" class=\"label expander\">\n" + " <span class=\"fa\"></span>Match information\n" + " </div>\n" + " <div class=\"overflow_handler box_overflow_fix flex-grow\">\n" + " <div id=\"match_info\">\n" + " Detailed match information will be displayed here automatically.\n" + " </div>\n" + " </div>\n\n" + " </div>\n\n\n" + " <div id=\"quickref\" class=\"box_overflow_fix flex-elem\">\n" + " <div class=\"label expander\">\n" + " <span class=\"fa\"></span>Quick reference\n" + " </div>\n" + " <div id=\"quickref_data\" class=\"flex-grow\">\n" + " <div id=\"first_menu\" class=\"box_overflow_fix general_menu\">\n" + " <ul>\n" + " <li class=\"menu_notice\">\n" + " <div class=\"filter_input filter_mini box_overflow_fix\" id=\"quickref_filter_parent\">\n" + " <i class=\"fa fa-search\"></i>\n" + " <div class=\"filter_div\">\n" + " <input data-focus=\"#quickref_filter_parent\" type=\"text\" id=\"quickref_filter\" class=\"filter_parent box_overflow_fix\" name=\"quickref_filter\" value=\"\" placeholder=\"filter\">\n" + " </div>\n" + " </div>\n" + " <span class=\"text_overflow\" style=\"margin-right: 5px;\">Full reference</span>\n" + " </li>\n" + " <li class=\"menu_item\" data-id=\"basic\"><i class=\"fa fa-star\"></i>Most used tokens</li>\n" + " <li class=\"menu_item\" data-id=\"fullref\"><i class=\"fa fa-database\"></i>All tokens</li>\n" + " <li class=\"menu_notice\">Categories</li>\n" + " <li class=\"menu_item\" data-id=\"other\"><i class=\"fa fa-dot-circle-o\"></i>General tokens</li>\n" + " <li class=\"menu_item\" data-id=\"anchors\"><i class=\"fa fa-anchor\"></i>Anchors</li>\n" + " <li class=\"menu_item\" data-id=\"meta\"><i class=\"fa fa-bolt\"></i>Meta sequences</li>\n" + " <li class=\"menu_item\" data-id=\"quantifiers\"><i class=\"fa fa-asterisk\"></i>Quantifiers</li>\n" + " <li class=\"menu_item\" data-id=\"groups\"><i class=\"fa fa-dot-circle-o\"></i>Group constructs</li>\n" + " <li class=\"menu_item\" data-id=\"charclass\"><i class=\"fa fa-th-large\"></i>Character classes</li>\n" + " <li class=\"menu_item\" data-id=\"modifiers\"><i class=\"fa fa-flag\"></i>Flags/Modifiers</li>\n" + " <li class=\"menu_item\" data-id=\"subst\"><i class=\"fa fa-scissors\"></i>Substitution</li>\n" + " <li class=\"menu_item\" id=\"quickref_search\"><i class=\"fa fa-search\"></i>Search result</li>\n" + " </ul>\n" + " </div>\n" + " <div id=\"second_menu\" class=\"no_icon box_overflow_fix general_menu overflow_handler\">\n" + " <ul class=\"no_icon\"></ul>\n" + " </div>\n" + " </div>\n" + " </div>\n\n" + " </div>\n" + " </div>\n\n" + " \n" + " </div>\n" + "</div>\n" + " \n" + " <div class=\"delimiter-dropdown dropdown dropdown-relative dropdown-tip dropdown-index\">\n" + " <ul class=\"dropdown-menu\">\n" + " <li><a href=\"#\">/</a></li>\n" + " <li><a href=\"#\">~</a></li>\n" + " <li><a href=\"#\">@</a></li>\n" + " <li><a href=\"#\">;</a></li>\n" + " <li><a href=\"#\">&#37;</a></li>\n" + " <li><a href=\"#\">`</a></li>\n" + " </ul>\n" + " </div>\n" + "<div id=\"dimmer\"></div>\n" + "<div id=\"dimmer-popup\"></div>\n" + "<div id=\"match-tooltip\" class=\"arrow-box monospace\">\n" + " <div id=\"tooltip-contents\"></div>\n" + " <div id=\"match-tooltip-tip\" class=\"arrow-box-tip\"></div>\n" + "</div>\n\n" + "<script src=\"/js/underscore-min.1433274318.js\" type=\"text/javascript\"></script>\n" + "<script src=\"//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js\" type=\"text/javascript\"></script>\n" + "<script src=\"/js/jquery.tools.1433274318.js\" type=\"text/javascript\"></script>\n" + "<script src=\"/js/general.regex101.1433274319.js\" type=\"text/javascript\"></script>\n" + "<script src=\"/js/colorParser.regex101.1433274323.js\" type=\"text/javascript\"></script>\n" + "<script src=\"/js/explainer.regex101.1433274320.js\" type=\"text/javascript\"></script>\n" + "<script>(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)})(window,document,'script','//www.google-analytics.com/analytics.js','ga');ga('create','UA-33878479-1','regex101.com');ga('send','pageview');</script>\n" + "<script src=\"/js/common.regex101.1433274322.js\" type=\"text/javascript\"></script>\n" + "<script src=\"/js/matcher.regex101.1433274321.js\" type=\"text/javascript\"></script>\n" + "</body>\n" + "</html>"; 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