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
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 = "\" *\\R(*SKIP)(*FAIL)|\\R"; final String string = "\"39901\",\"0002286898\",\"88\",\"ACTUALS\",\"TO RECORD ACCRUED LIABILITIES FOR GOODS OR SERVICES RECEIVED AT JUNE 30 2016 PER ATTACHED SCHEDULE. FOR 39901, IU journal 2297455 CONTACT: [NAME PHONE NUMBER] / [NAME PHONE NUMBER]\",\"LA\",\"34000000\",\"Accrued Liabilities\",\"\",\"11000\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"2017\",\"1\",\"191313.130\",\"07/28/2016\",\"07/01/2016\",\"\",\"Accrued Liabilities\",\"\" \n" + "\"39901\",\"0002290128\",\"7\",\"ACTUALS\",\"To record accrued liabilities for goods or services received at June 30, 2016 per the attached schedule. \n" + "Contact [NAME PHONE NUMBER EMAIL] or [NAME PHONE NUMBER EMAIL]\",\"LA\",\"34000000\",\"Accrued Liabilities\",\"\",\"11000\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"2017\",\"1\",\"2556242.170\",\"07/31/2016\",\"07/01/2016\",\"\",\"Accrued Liabilities\",\"\" \n" + "\"39901\",\"0002291224\",\"37\",\"ACTUALS\",\"TO RECORD ACCRUED LIABILITIES FOR GOODS OR SERVICES RECEIVED AT JUNE 30 PER THE ATTACHED SCHEDULE. FOR 34530, CONTACT: [NAME PHONE NUMBER EMAIL]\",\"LA\",\"34000000\",\"Accrued Liabilities\",\"\",\"11000\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"2017\",\"1\",\"3010262.140\",\"07/27/2016\",\"07/01/2016\",\"\",\"Accrued Liabilities\",\"\" \n" + "\"39901\",\"0002291259\",\"2\",\"ACTUALS\",\"TO RECORD ACCRUED LIABILITIES FOR GOODS OR SERVICES RECEIVED AT JUNE 30 PER THE ATTACHED SCHEDULE. FOR 34571, CONTACT: [NAME PHONE NUMBER] / [NAME PHONE NUMBER]\",\"LA\",\"34000000\",\"Accrued Liabilities\",\"\",\"11000\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"2017\",\"1\",\"38140.260\",\"07/27/2016\",\"07/01/2016\",\"\",\"Accrued Liabilities\",\"\" \n" + "\"39901\",\"0002291336\",\"12\",\"ACTUALS\",\"TO RECORD ACCRUED LIABILITIES FOR GOODS OR SERVICES RECEIVED AT JUNE 30 PER ATTACHED SCHEDULE. FOR 345.20\",\"LA\",\"34000000\",\"Accrued Liabilities\",\"\",\"11000\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"2017\",\"1\",\"2768000.000\",\"08/01/2016\",\"07/01/2016\",\"\",\"Accrued Liabilities\",\"\""; final String subst = ""; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE); 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