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

/
/
g

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 = "((((\\d{1,3}\\.){2}\\d{1,3})\\[\\.\\])(\\d{1,3}))\\,(\\d{1,5})?\\/?(\\d{1,5})?"; final String string = "185.106.121[.]118,\n" + "133.100.202[.]85,443\n" + "185.106.121[.]66,\n" + "82.211.30[.]195,\n" + "95.183.53[.]36,\n" + "84.200.17[.]144,\n" + "107.161.178[.]46,53/443\n" + "190.117.186[.]171,443\n" + "109.230.199[.]54,\n" + "87.98.179[.]18,57421\n" + "76.9.60[.]204,\n" + "125.214.195[.]17,\n" + "131.72.139[.]118,\n" + "196.29.166[.]218,\n" + "37.228.151[.]133,\n" + "37.10.71[.]99,\n" + "202.145.16[.]4,\n" + "133.94.1[.]3,\n" + "163.22.20[.]4,\n" + "210.135.90[.]41,\n" + "139.18.13[.]2,\n" + "212.19.128[.]4,\n" + "134.19.176[.]150,7777\n" + "185.101.34[.]122,6478\n" + "185.101.34[.]74,5367\n" + "185.25.51[.]246,\n" + "46.100.250[.]10,\n" + "62.201.235[.]227,\n" + "67.65.229[.]53,\n" + "188.165.149[.]249,\n" + "208.92.93[.]212,\n" + "209.239.123[.]75,\n" + "137.175.19[.]153,37779\n" + "http://doladolaladont[.]com,\n" + "https://alphanoun[.]bit/forum/ajax.php,\n" + "http://coffeol[.]com/fend/raw_server.exe,\n" + "http://inpend-traij[.]net/aka.doc,\n" + "http://twlnco[.]com/gskf/online.php,\n" + "https://a.pomf[.]cat/wryvpl.exe,\n" + "https://filesblog[.]bit/blog/ajax.php,\n" + "http://egonbute.duckdns[.]org,5588\n" + "http://kampolento.ddns[.]net,1825\n" + "http://memeku.ddns[.]net,1825\n" + "http://sap.misapor[.]ch,443\n" + "http://update.toythieves[.]com,8080\n" + "http://workhard231.hopto[.]org,7070/8821\n" + "http://www.eye-watch[.]in,\n" + "https://channel.jetos[.]com,443\n" + "https://mcf.otzo[.]com,443\n" + "https://onlink.epac[.]to,443\n" + "https://repview.ignorelist[.]com,443\n" + "https://sap.misapor[.]ch,443\n" + "https://statis.ignorelist[.]com,443\n" + "https://update.toythieves[.]com,443\n" + "http://piezasrazonable[.]com,80\n" + "http://wmi.mykings[.]top,\n" + "http://js.mykings[.]top:280/v.srt,280\n" + "http://wmi.mykings[.]top:8888/test.html,8888\n" + "http://wmi.mykings[.]top:8888/kill.html,8888\n" + "http://coffeol[.]com/fend/lll.exe,\n"; final String subst = "$3.$5"; 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