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

/
/
gm

Test String

Substitution

Processing...

Code Generator

Generated Code

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String[] args) { final String regex = "(\\<li\\>\\<a target.+?\\>)(.+)(\\<\\/a\\>\\<\\/li\\>)"; final String string = "Функция Blue\n" + "Функция ChrW [VBA]\n" + "Функция CreateUnoDialog\n" + "Функция CurDir\n" + "Функция Дата\n" + "Функция DateSerial\n" + "Функция DateValue\n" + "Функция Day\n" + "Функция DDB [VBA]\n" + "Функция Dir\n" + "Функция Eof\n" + "Функции обработки ошибок\n" + "Функция FileAttr\n" + "Функция FileDateTime\n" + "Функция FileExists\n" + "Функция FileLen\n" + "Функция FormatDateTime [VBA]\n" + "Функция FormatNumber [VBA]\n" + "Функция FreeFile\n" + "Функция FV [VBA]\n" + "Функция GetAttr\n" + "Функция Green\n" + "Функция InStrRev [VBA]\n" + "Функция Input [VBA]\n" + "Функция InputBox\n" + "Функция IPmt [VBA]\n" + "Функция IRR [VBA]\n" + "Функция Loc\n" + "Функция Lof\n" + "Функция MIRR [VBA]\n" + "Функция Month\n" + "Функция MonthName [VBA]\n" + "Функция NPer [VBA]\n" + "Функция NPV [VBA]\n" + "Числовые функции\n" + "Функция Pmt [VBA]\n" + "Функция PPmt [VBA]\n" + "Функция PV [VBA]\n" + "Функция QBColor\n" + "Функция Rate [VBA]\n" + "Функция Red\n" + "Функция RGB\n" + "Функция RGB [VBA]\n" + "Функция Round [VBA]\n" + "Функция Seek\n" + "Функция SLN [VBA]\n" + "Функция StrConv [VBA]\n" + "Функция StrReverse [VBA]\n" + "Функция SYD [VBA]\n" + "Функция WeekDay\n" + "Функция WeekdayName [VBA]"; final String subst = "$2"; 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