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

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 = "(\\/((BACK)|(MIDDLE))\\/[\\w_]+\\/([\\w_\\-]+)\\/(\\w+\\/)*[\\w\\-]+\\.xml):\\s+((JdbcUrl )|(<property name=\\\"url\\\" value=\\\")|(<url>))(jdbc:((mysql)|(sybase)|(oracle)):((\\/\\/)|(Tds:)|(thin:@\\/\\/))([\\w\\-.]+:\\d+)?\\/([\\w_\\-]+)(\\?(\\w+=\\w+&amp;)*(\\w+=\\w+))?)((\\\" \\/>)|(<\\/url>))?"; final String string = "/BACK/ubi_sips_intranet/ubi-intranet-ticketing/conf/openejb.xml: JdbcUrl jdbc:mysql://bqsips03v:3311/sips_web_ticketing\n" + "/BACK/ubi_sips_intranet/ubi-legacyfraud2rms/properties/openejb.xml: JdbcUrl jdbc:mysql://bqsips03v:3311/wlp_online_watcher?useUnicode=true&amp;cacheResultSetMetadata=true\n" + "/BACK/ubi_sips_intranet/ubi-legacyfraud2rms/properties/openejb.xml: JdbcUrl jdbc:mysql://bqsips03v:3311/wlp_online_watcher?useUnicode=true&amp;cacheResultSetMetadata=true\n" + "/BACK/ubi_sips_intranet/ubi-legacyfraud2rms/properties/openejb.xml: JdbcUrl jdbc:sybase:Tds:bsbfi008v:13420/payment\n" + "/BACK/ubi_sips_intranet/ubi-legacyfraud2rms/properties/openejb.xml: JdbcUrl jdbc:mysql://bqsips03v:3311/sips_rms_param?useUnicode=true&amp;cacheResultSetMetadata=true\n" + "/BACK/ubi_sips_intranet/ubi-legacyfraud2rms/properties/spring-beans.xml: <property name=\"url\" value=\"jdbc:sybase:Tds:bsbfi008v:13420/payment\" />\n" + "/BACK/ubi_sips_intranet/ubi-legacyfraud2rms/properties/spring-beans.xml: <property name=\"url\" value=\"jdbc:sybase:Tds:/payment_data\" />\n" + "/BACK/ubz_oppotota/alimentation-oppotota/properties/openejb.xml: JdbcUrl jdbc:sybase:Tds:bsbfi008v:13420/sips_oppotota\n" + "/BACK/ubz_oppotota/alimentation-oppotota/properties/openejb.xml: JdbcUrl jdbc:oracle:thin:@//vsbficrs11db-scan.vdm.qvmbfi.svc.meshcore.net:1522/SN_SIPS_OPPOTOTA_NRT\n" + "/BACK/ubz_sips_batch/ubz-fraud/properties/fwk-opm.xml: <url>jdbc:sybase:Tds:bsbfi008v:13420/payment</url>\n" + "/BACK/ubz_sips_batch/ubz-fraud/properties/openejb.xml: JdbcUrl jdbc:mysql://bqsips03v:3311/wlp_online_watcher?useUnicode=true&amp;cacheResultSetMetadata=true\n" + "/BACK/ubz_sips_batch/ubz-fraud/properties/openejb.xml: JdbcUrl jdbc:mysql://bqsips03v:3311/wlp_online_watcher?useUnicode=true&amp;cacheResultSetMetadata=true\n" + "/BACK/ubz_sips_batch/ubz-fraud/properties/openejb.xml: JdbcUrl jdbc:mysql://bqsips03v:3311/sips_merchants?useUnicode=true&amp;cacheResultSetMetadata=true\n" + "/BACK/ubz_sips_batch/ubz-fraud/properties/openejb.xml: JdbcUrl jdbc:mysql://bqsips03v:3311/sips_rms_param?useUnicode=true&amp;cacheResultSetMetadata=true\n" + "/BACK/ubz_sips_batch/ubz-fraud/properties/openejb.xml: JdbcUrl jdbc:sybase:Tds:bsbfi008v:13420/payment_data\n" + "/BACK/ubz_sips_batch/ubz-fraud/properties/openejb.xml: JdbcUrl jdbc:sybase:Tds:bsbfi008v:13420/payment\n" + "/BACK/ubz_sips_batch/ubz-fraud/properties/spring-beans.xml: <property name=\"url\" value=\"jdbc:sybase:Tds:bsbfi008v:13420/payment\" />\n" + "/BACK/ubz_sips_batch/ubz-fraud/properties/spring-beans.xml: <property name=\"url\" value=\"jdbc:sybase:Tds:bsbfi008v:13420/payment_data\" />\n" + "/BACK/ubz_bdd/sips_stat_iga/param/openejb.xml: JdbcUrl jdbc:mysql://bqsips03v:3311/sips_stat_iga\n" + "/BACK/ubz_bdd/sips_stat_iga/param/openejb.xml: JdbcUrl jdbc:mysql://127.0.0.1:3306/sips_stat_iga\n" + "/BACK/ubz_bdd/sips_stat_iga/param/openejb.xml: JdbcUrl jdbc:mysql://bqsips31v:3306/sips_stat_iga\n" + "/BACK/ubz_bdd/sips_stat_iga.old/param/openejb.xml: JdbcUrl jdbc:mysql://bqsips31v:3307/sips_stat_iga\n" + "/BACK/ubz_bdd/sips_stat_iga.old/param/openejb.xml: JdbcUrl jdbc:mysql://127.0.0.1:3306/sips_stat_iga\n" + "/BACK/ubz_bdd/sips_stat_iga.old/param/openejb.xml: JdbcUrl jdbc:mysql://bqsips31v:3306/sips_stat_iga\n" + "/BACK/ubz_sbo/rgi/conf/config.xml: <url>jdbc:sybase:Tds:bsbfi008v:13420/payment_account</url>"; final String subst = "$5;$1;$13;$21"; 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