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

/
/
gs

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 = "kjasgdfkjhg asjgdjasgd kjasghd kjasdgd . () {}\n" + " {{\n" + "sdwfhklsd<dfdfdf///df/ \"\"\n" + "''sdsd >fklsdfljhksdfkjh. /asdfsdf/sfdsdfs()df\\sdfsdfsdf][][][{][[]\n" + "}} \n\n\n\n\n\n\n\n\n" + "{{\n" + "try{\n" + "var s_5ka={gen204:\"xjs2es\",clearcut:32};s_fk(\"csies\");s_ka(\"window.google.timers.load.t\")&&google.tick(\"load\",s_5ka);\n" + "s__i(\"csies\");s_fl();\n" + "}catch(e){_DumpException(e)}\n" + "/* _Module_:emb */\n" + "try{\n" + "s_fk(\"emb\");\n" + "s__i(\"emb\");s_fl();\n" + "}catch(e){_DumpException(e)}\n" + "/* _Module_:emc */\n" + "try{\n" + "s_fk(\"emc\");\n" + "s__i(\"emc\");s_fl();\n" + "}catch(e){_DumpException(e)}\n" + "/* _Module_:emd */\n" + "try{\n" + "s_fk(\"emd\");\n" + "s__i(\"emd\");s_fl();\n" + "}catch(e){_DumpException(e)}\n" + "/* _Module_:eme */\n" + "try{\n" + "s_fk(\"eme\");\n" + "s__i(\"eme\");s_fl();\n" + "}catch(e){_DumpException(e)}\n" + "/* _Module_:sy4o */\n" + "try{\n" + "var s_2i,s_dka,s_3i,s_fka,s_hla=function(a,b){return a.left<=b.left+b.width&&b.left<=a.left+a.width&&a.top<=b.top+b.height&&b.top<=a.top+a.height};s_fk(\"sy4o\");var s_4i=s_d,s_B=s_d,s_5i=s_qd(0),s_6i=s_qd(0),s_7i=s_qd(0),s_gka=function(a,b){window.scrollBy(a,b)},s_8i=function(a,b){window.scrollTo(a,b)},s_9i=s_rd,s_$i=s_rd,s_hka=s_d,s_ika=s_d,s_jka=s_d,s_X$b=s_rd,s_aj=function(){if(document.body){var a=s_6d(document.body).top;s_aj=s_qd(a);return a}return 0},s_E$a=s_lb.match(/ GSA\\/([.\\d]+)/),s_F$a=s_E$a?s_E$a[1]:\"\";s_dka=(s_2i=!!s_E$a||!!window.agsa_ext)&&0<=s_Ia(s_F$a,\"4\");s_3i=s_2i&&0<=s_Ia(s_F$a,\"5.2\"); s_fka=s_2i&&0<=s_Ia(s_F$a,\"4.3\")&&!(0<=s_Ia(s_F$a,\"4.5\"));\n\n" + "s__i(\"sy4o\");s_fl();\n" + "}catch(e){_DumpException(e)}\n" + "/* _Module_:sy4z */\n" + "try{\n" + "s_fk(\"sy4z\");var s_8ka={},s_$ka=function(a,b,c){var d=c?1:0;if(!s_ka(0!=d?\"velour.loadJsInterfaceWithFlags\":\"velour.loadJsInterface\"))return s_Qe(Error(\"G\"));a in s_8ka||(s_8ka[a]={});c=s_8ka[a];if(c[b])return c[b];var e=s_Se(),f=0!=d?window.velour.loadJsInterfaceWithFlags(a,b,d):window.velour.loadJsInterface(a,b);d=\"google.velourCb.\"+a+\".\"+b;s_ta(d,{onSuccess:function(){e.resolve(f.getResult())},onFailure:function(){e.reject(a+\".\"+b+\" failed to load: \"+f.getError().getMessage())}});f.setCallback(d);return c[b]=\n" + "e.Mc},s_8la=function(a,b,c,d){for(var e=[a,b,!1],f=2;f<arguments.length;f++)e.push(arguments[f]);return s_ela.apply(null,e)},s_ela=function(a,b,c,d,e){for(var f=s_$ka(a,b,c),g=[],k=4;k<arguments.length;k++)g.push(arguments[k]);return f.then(function(a){return a[d]?a[d].apply(a,g):s_Qe(Error(\"Za`\"+d))})};\n\n" + "s__i(\"sy4z\");s_fl();\n" + "}catch(e){_DumpException(e)}\n" + "/* _Module_:sy64 */\n" + "try{\n" + "s_fk(\"sy64\");var s_xdb,s_ydb=!1,s_Adb=function(){var a=s_D$a;s_hc(window,\"beforeunload\",function(){s_ydb||s_xdb.set(\"isn\",a)})};if(s_2i){s_xdb=s_ng(\"s\",\"isn\");var s_D$a;var s_G$a,s_H$a,s_Kib=(s_3j().get(\"isn\")||\"\").split(\":\");s_H$a=s_Kib[0];s_G$a=s_Kib[1];if(s_H$a){var s_ajb={};s_D$a=(s_ajb[s_G$a]=s_H$a,s_ajb)}else s_D$a=null;s_D$a&&s_Adb()};\n\n" + "s__i(\"sy64\");s_fl();\n" + "}catch(e){_DumpException(e)}\n" + "/* _Module_:aa */\n" + "try{\n" + "s_fk(\"aa\");\n" + "s__i(\"aa\");s_fl();\n" + "}catch(e){_DumpException(e)}\n" + "/* _Module_:abd */\n" + "try{\n" + "s_fk(\"abd\");var s_iz=function(a){for(var b=\"\",c=21,d=0;d<a.length;d++)3!=d%4&&(b+=String.fromCharCode(a[d]^c),c++);return b},s_S5a=s_iz([97,119,115,111,107]),s_T5a=s_iz([97,119,115,111,107,123]),s_U5a=s_iz([118,115,121,107,108,124,104,119,68,127,114,105,114]),s_V5a=s_iz([101,126,118,102,118,125,118,109,126]),s_W5a=s_iz([116,116,115,108]),s_X5a=s_iz([113,115,99,107]),s_Y5a=s_iz([113,115,117,107]),s_Z5a=s_iz([58,127,122,103,121,126,127,98,104,51,109,124,118,123,15,76,81,90,13,95,67,76,64,118]),s__5a=function(a){var b=\n" + "0,c;for(c in a)if(a[c].e)if(a[c].b)b++;else return!1;return 0<b},s_05a=function(a){a=a||{};var b={};b[s_X5a]={e:!!a[s_X5a],b:!s_7ma(s_S5a)};b[s_Y5a]={e:!!a[s_Y5a],b:!s_7ma(s_T5a)};return b},s_15a=function(a){var b=[],c;for(c in a)a[c].e&&b.push(c+\":\"+(a[c].b?\"1\":\"0\"));return b.join(\",\")},s_25a=function(a,b){a=String(a);b&&(a+=\",\"+b);google.log(s_V5a,a)},s_35a=function(a,b,c){c=null!=c?c:2;if(1>c)s_25a(7,b);else{var d=new Image;d.onerror=s_f(s_35a,a,b,c-1);d.src=a}},s_r_b={}; s_hf(\"abd\",(s_r_b.init=function(a){a=a||{};if(a[s_W5a]&&s_7ma(s_U5a)){a=s_05a(a);var b=s_15a(a);s__5a(a)?s_25a(1,\"0,\"+b):s_25a(0,b);s_H.qc(function(){s_35a(s_Z5a,\"aa\")})}},s_r_b));\n\n" + "s__i(\"abd\");s_fl();\n" + "}catch(e){_DumpException(e)}\n" + "/* _Module_:aspn */\n" + "try{\n" + "s_fk(\"aspn\");var s_0pb=function(a){var b=a.getAttribute(\"data-url\");window.open(b,\"_blank\",\"menubar=no,left=\"+((window.screenLeft||window.screenX||0)+Math.max(0,((window.innerWidth||document.documentElement.clientWidth||document.body.clientWidth||0)-445)/2))+\",top=\"+((window.screenTop||window.screenY||0)+Math.max(0,((window.innerHeight||document.documentElement.clientHeight||document.body.clientHeight||0)-665)/2))+\",width=445,height=665\");(a=a.getAttribute(\"data-ved\"))&&google.log(\"\",\"&ved=\"+a)},s_1xa={}; s_hf(\"aspn\",(s_1xa.init=function(){s_Oh(\"aspn\",{ota:s_0pb},!0)},s_1xa));\n\n" + "s__i(\"aspn\");s_fl();\n" + "}catch(e){_DumpException(e)}\n" + "/* _Module_:sy3g */\n" + "try{\n" + "}}\n"; final Pattern pattern = Pattern.compile(regex, Pattern.DOTALL); 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