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

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{4}-\\d{2}-\\d{2} \\d{2}:\\d{2}:\\d{2}.\\d{3})(.*)(Message Picked from the queue....|Response Message : )([\\S\\s]+?>)\\n(\\d{4}-\\d{2}-\\d{2} \\d{2}:\\d{2}:\\d{2}.\\d{3})"; final String string = "2018-11-25 14:10:29.184 [ajp-bio-172.27.9.196-8009-exec-1] ERROR c.q.j.c.a.event.AuditEventHandler U:UNKNOWN SC:17618 TX:0 - SesIdCode is null. So no audit log transaction for this transaction\n" + "2018-11-25 14:10:29.184 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.component.SenderComponent U:UNKNOWN SC:17618 TX:0 - SendMessage, Invockation End..\n" + "2018-11-25 14:10:38.666 [ajp-bio-172.27.9.196-8009-exec-1] DEBUG c.e.r.p.endpoint.PickerProcessor U:UNKNOWN SC:17618 TX:0 - Message Picked from the queue....<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\">\n" + " <soapenv:Header />\n" + " <soapenv:Body>\n" + " <EAI_MESSAGE>\n" + " <EAI_HEADER>\n" + " <ServiceName>SMS</ServiceName>\n" + " <ServiceType>SendSms</ServiceType>\n" + " <ServiceVersion>1.0</ServiceVersion>\n" + " <Client>xx</Client>\n" + " <ClientChannel>SBA</ClientChannel>\n" + " <MsgChannel>WebServices</MsgChannel>\n" + " <SecurityInfo>\n" + " <Authentication>\n" + " <UserId>xxx</UserId>\n" + " <Password>xxx</Password>\n" + " </Authentication>\n" + " <Authorization>\n" + " <UserId>xxx</UserId>\n" + " </Authorization>\n" + " </SecurityInfo>\n" + " <SnapIns>\n" + " <NameValue Name=\"\" Value=\"\" />\n" + " </SnapIns>\n" + " <RequestorLanguage>E</RequestorLanguage>\n" + " <EaiReference>0</EaiReference>\n" + " <ReturnCode>0000</ReturnCode>\n" + " </EAI_HEADER>\n" + " <EAI_BODY>\n" + " <EAI_REQUEST>\n" + " <SendSmsRequest>\n" + " <RefID>502521</RefID>\n" + " <ISD>974</ISD>\n" + " <PhoneNO>xxx</PhoneNO>\n" + " <Message>Dear User, Your unique OTP pin for xxx is xxxx</Message>\n" + " <Language>E</Language>\n" + " <Priority>2</Priority>\n" + " <SchDate />\n" + " <SrcKey>xx</SrcKey>\n" + " <Department>xx xx</Department>\n" + " <SMSUser>SMS Alerter</SMSUser>\n" + " </SendSmsRequest>\n" + " </EAI_REQUEST>\n" + " </EAI_BODY>\n" + " </EAI_MESSAGE>\n" + " </soapenv:Body>\n" + "</soapenv:Envelope>\n" + "2018-11-25 14:10:38.666 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.process.GenericProcessor U:UNKNOWN SC:17618 TX:0 - Starting the processor -com.eix.processor.persistence.InPersisterProcessor\n" + "2018-11-25 14:10:38.666 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.p.InPersisterProcessor U:UNKNOWN SC:17618 TX:0 - In Persister Processor is invoking...\n" + "2018-11-25 14:10:38.666 [ajp-bio-172.27.9.196-8009-exec-1] ERROR c.q.j.c.a.event.AuditEventHandler U:UNKNOWN SC:17618 TX:0 - SesIdCode is null. So no audit log transaction for this transaction\n" + "2018-11-25 14:10:38.673 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.m.s.i.MessagePersistenceServiceImpl U:UNKNOWN SC:17600 TX:0 - in saveMessage\n" + "2018-11-25 14:10:38.673 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17600 TX:0 - Got eix ID from Instance ID 1\n" + "2018-11-25 14:10:38.673 [ajp-bio-172.27.9.196-8009-exec-1] INFO \n" + "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - No of Routes are--1\n" + "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.message.util.ConditionHelper U:UNKNOWN SC:17740 TX:0 - Start if verifyCondition for : null\n" + "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - conditionTestResult : true\n" + "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - In populateRecipient-- Start -->null\n" + "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Method identifyCopyRecipients Start\n" + "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Method identifyCopyRecipients End\n" + "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - In populateRecipient-- End\n" + "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Method identifyMessageRecipientsforManualRouting -- End\n" + "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - allRecipientinErrorOnNoRecipient : false\n" + "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Method updateParentAddrCommDtls Start\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - addrCommList.size() --->> 0\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - messageRecipients without Adrs Com ID() --->> MessageRecipient [messageType=null, messageVersion=null, messageStandard=null, envelopeType=null, splitterClassName=null, addressType=null, address=null]\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - ----Recipients are----\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient AddressComm ID--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Address Type--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Participant ID--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Route Communication ID--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Route Communication Address Type--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Address--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Message Type--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Message Version--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Message Standard--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Address Envelope Type--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Splitter Class--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Send Original Message--null\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - -------------------------------------\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Method identifyMessageRecipients -- End\n" + "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.route.MessageRouteProcessor U:UNKNOWN SC:17740 TX:0 - MessageRouteProcessor process method -- End\n" + "2018-11-25 14:27:58.099 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.process.GenericProcessor U:UNKNOWN SC:17740 TX:0 - Starting the processor -com.eix.processor.system.WebServiceProcessor\n" + "2018-11-25 14:27:58.099 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.system.WebServiceProcessor U:UNKNOWN SC:17740 TX:0 - Service Processor is invoking...\n" + "2018-11-25 14:27:58.099 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.w.c.i.impl.CheckInServiceImpl U:UNKNOWN SC:17740 TX:0 - Invoking webservice http://alteainterface.qatarairways.com.qa/AlteaODS/AlteaODS.svc\n" + "2018-11-25 14:27:58.178 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.w.c.i.impl.CheckInServiceImpl U:UNKNOWN SC:17740 TX:0 - Response Message : <MESSAGE><HEADER><ServiceName>xxxx xxxx</ServiceName><ServiceType>PassengerInfo</ServiceType><ServiceVersion>1.0</ServiceVersion><Client>xxx</Client><ClientChannel>xx</ClientChannel><MsgChannel>WebServices</MsgChannel><SecurityInfo><Authentication><UserId>xx</UserId><Password>xxx</Password></Authentication></SecurityInfo></HEADER><BODY><RESPONSE><passengerStatus>Invalid</passengerStatus><RegisteredFlight></RegisteredFlight><passengerPhone></passengerPhone><passengerEmail></passengerEmail><FFPNumber></FFPNumber></RESPONSE></BODY></MESSAGE>\n" + "2018-11-25 14:27:58.178 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.process.GenericProcessor U:UNKNOWN SC:17740 TX:0 - Starting the processor -com.eix.processor.persistence.OutPersisterProcessor\n" + "2018-11-25 14:27:58.178 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.p.OutPersisterProcessor U:UNKNOWN SC:17740 TX:0 - Out Persister Processor is invoking...\n" + "2018-11-25 14:27:58.179 [ajp-bio-172.27.9.196-8009-exec-1] ERROR c.q.j.c.a.event.AuditEventHandler U:UNKNOWN SC:17740 TX:0 - SesIdCode is null. So no audit log transaction for this transaction\n" + "2018-11-25 14:27:58.185 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.m.s.i.MessagePersistenceServiceImpl U:UNKNOWN SC:17633 TX:0 - start updateINAndInsertOutMessageSync\n" + "2018-11-25 14:27:58.185 [ajp-bio-172.27.9.196-8009-exec-1] WARN c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17633 TX:0 - Authentication is null\n" + "2018-11-25 14:27:58.187 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17633 TX:0 - Got eix ID from Instance ID 1\n" + "2018-11-25 14:27:58.187 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17633 TX:0 - ****** Returning EIX ID-> 3\n" + "2018-11-25 14:27:58.187 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17633 TX:0 - Got eix ID from Instance ID 1\n" + "2018-11-25 14:27:58.188 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17633 TX:0 - ****** Returning EIX ID-> 3\n" + "2018-11-25 14:27:58.195 [ajp-bio-172.27.9.196-8009-exec-1] ERROR c.q.j.c.a.event.AuditEventHandler U:UNKNOWN SC:17633 TX:0 - SesIdCode is null. So no audit log transaction for this transaction\n" + "2018-11-25 14:27:58.195 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.component.SenderComponent U:UNKNOWN SC:17633 TX:0 - SendMessage, Invockation Start..\n" + "2018-11-25 14:27:58.195 [ajp-bio-172.27.9.196-8009-exec-1] ERROR c.q.j.c.a.event.AuditEventHandler U:UNKNOWN SC:17633 TX:0 - SesIdCode is null. So no audit log transaction for this transaction\n" + "2018-11-25 14:27:58.202 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.m.s.i.MessagePersistenceServiceImpl U:UNKNOWN SC:17618 TX:0 - in updateSendStatusInOutMessage\n" + "2018-11-25 14:27:58.202 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.m.d.r.i.OutMessageRepositoryImpl U:UNKNOWN SC:17618 TX:0 - in updateSendStatusInOutMessage\n"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE); 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