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

/
/

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 = "<script[^>]+>[\\s|\\S]*('facebook-jssdk'\\)\\);\n" + "\\/\\/ ]]><\\/script>)"; final String string = "<p><em>ขอขอบคุณข้อมูลจาก <a href=\"https://www.facebook.com/CrewabsCabincrew/photos/a.163266007065328.35057.162290157162913/981295968595657/?type=3\">เฟซบุ๊ก Crewabs Cabincrew</a></em></p>\n" + "<script type=\"text/javascript\"></script>asdasd\n" + "asdasdasd\n" + "asdad\n\n" + "<script type=\"text/javascript\">// <![CDATA[\n" + "(function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = \"//connect.facebook.net/th_TH/sdk.js#xfbml=1&version=v2.3\"; fjs.parentNode.insertBefore(js, fjs);}(document, 'script', 'facebook-jssdk'));\n" + "// ]]></script>\n" + "<div class=\"fb-post\" data-href=\"https://www.facebook.com/CrewabsCabincrew/photos/a.163266007065328.35057.162290157162913/981295968595657/?type=3\" data-width=\"500\">\n" + "<div class=\"fb-xfbml-parse-ignore\">\n" + "<blockquote cite=\"https://www.facebook.com/CrewabsCabincrew/photos/a.163266007065328.35057.162290157162913/981295968595657/?type=3\">\n" + "<p>จากใจแอร์สาวบนไฟล์ทที่โดนหนุ่มรถไฟจีบด้วยมุก\"ระเบิด\"กรณีหนุ่มรถไฟ แซวแอร์ไทยไลอ้อน อยากขอพื้นที่ชี้แจงให้ลูกเรือสาวในไ...</p>\n" + "Posted by <a href=\"https://www.facebook.com/CrewabsCabincrew/\">Crewabs Cabincrew</a> on&nbsp;<a href=\"https://www.facebook.com/CrewabsCabincrew/photos/a.163266007065328.35057.162290157162913/981295968595657/?type=3\">3 พฤศจิกายน 2015</a></blockquote>\n" + "</div>\n" + "</div>\n" + "</div>\n" + "</div>"; final Pattern pattern = Pattern.compile(regex); final Matcher matcher = pattern.matcher(string); if (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