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

r"
"
gmi

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 = "^weight.+average.+(\\n.+){0,2}(share|basic|ordinary).+(?P<d1>\\s[\\d,]+)\\s+(?P<d2>\\s[\\d,]+)"; final String string = "VITROX CORPORATION BERHAD \n" + "(Incorporated in Malaysia) \n" + "Company No: 200401011463 (649966-K) \n" + "QUARTERLY REPORT ON RESULTS FOR THE SECOND QUARTER ENDED 30 JUNE 2020 \n" + "B. DISCLOSURE REQUIREMENTS AS SET OUT IN APPENDIX 9B OF BURSA SECURITIES \n" + "MAIN MARKET LISTING REQUIREMENTS (cont’d) \n" + "B10 Earnings per share \n" + "INDIVIDUAL QUARTER CUMULATIVE QUARTER\n" + "Corresponding\n" + "Corresponding Current preceding\n" + "Current quarter preceding period-to-date period-to-date\n" + "ended quarter ended ended ended\n" + "30-Jun-20 30-Jun-19 30-Jun-20 30-Jun-19\n" + "Profit attributable to owners of \n" + "the Company (RM'000) 22,922 24,387 43,987 48,003\n" + "Weighted average number of\n" + "shares for computing basis\n" + "earnings per share ('000) 471,092 470,718 471,092 470,718\n" + "Basic earnings per share (sen) 4.87 5.18 9.34 10.20\n" + "Weighted average number of\n" + "shares for computing diluted \n" + "earnings per share ('000) 472,121 4 71,896 472,121 471,896\n" + "Diluted earnings per share (sen) 4.86 5.17 9.32 10.17\n" + "B11 Auditors’ report on preceding annual financial statements \n" + "The auditors’ report on the financial statements for the year ended 31 December 2019 was not subject to \n" + "any qualification. \n" + "13 "; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.CASE_INSENSITIVE); 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