Save & Share

  • Current Version: 2
  • Update Regex
    ctrl+⇧+s
  • Save new Regex
    ctrl+s
  • Add to Community Library

Flavor

  • PCRE2 (PHP)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java
  • .NET 7.0 (C#)
  • Rust
  • PCRE (Legacy)
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests
Sponsors
There are currently no sponsors. Become a sponsor today!
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

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 = "^\\s*(\\w*)=\\s?\\d"; final String string = "#!/bin/bash\n\n" + "flavor=${1:-dzen2}\n\n" + "function gmail() {\n" + "while true\n" + "do\n" + " inbox_count=$(wget -q -O- --auth-no-challenge --user=something@gmail.com --password=something 'https://mail.goog$\n" + " echo \"Gg:$inbox_count\"\n" + " sleep 60\n" + "done\n" + "}\n\n" + "function weather() {\n" + "while true\n" + "do\n" + " weather_stat=$($HOME/.config/i3/./weather.sh)\n" + " echo \"F$weather_stat\"\n" + " sleep 900\n" + "done\n" + "}\n\n" + "function time_date() {\n" + "while true\n" + "do\n" + " klocka=$(date +'%A den %d %B v%V %H:%M')\n" + " echo \"S$klocka\"\n" + " sleep 10\n" + "done < <(echo)\n" + "}\n\n" + "bspc control --put-status\n" + "xtitle -sf \"T%s\" > \"$PANEL_FIFO\" &\n" + "weather > \"$PANEL_FIFO\" &\n" + "gmail > \"$PANEL_FIFO\" &\n" + "time_date > \"$PANEL_FIFO\" &\n" + "case \"$flavor\" in\n" + "bar)\n" + " cat \"$PANEL_FIFO\" | .config/bspwm/panel_bar | bar\n" + ";;\n" + "dzen2)\n" + " . .config/bspwm/panel_colors\n" + " PANEL_HEIGHT=14\n" + " FONT_FAMILY='Dejavu Sans'\n" + " FONT_SIZE=9\n" + " cat \"$PANEL_FIFO\" | .config/bspwm/panel_dzen2 -f \"$FONT_FAMILY\" -s \"$FONT_SIZE\" | \\\n" + " dzen2 -h $PANEL_HEIGHT -dock -ta l -title-name panel -fn \"${FONT_FAMILY}:pixelsize=${FONT_SIZE}\" \\\n" + " -fg \"$COLOR_FOREGROUND\" -bg \"$COLOR_BACKGROUND\"\n" + ";;\n" + "esac"; 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