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

/
/
gm

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 = "<div\\s[\\s\\S]*?featurebullets_feature_div[\\s\\S]*?>\\s*<div\\s[\\s\\S]*?feature-bullets[\\s\\S]*?>\\s*(<ul[\\s\\S]*?<\\/ul>)[\\s\\S]*?<\\/div>[\\s\\S]*?<\\/div>"; final String string = "<div id=\"featurebullets_feature_div\" class=\"feature\" data-feature-name=\"featurebullets\" data-cel-widget=\"featurebullets_feature_div\">\n" + " \n" + " \n\n\n\n\n" + " \n\n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n\n\n\n" + "<div id=\"feature-bullets\" class=\"a-section a-spacing-medium a-spacing-top-small\">\n\n\n\n\n\n\n\n\n" + " \n" + " \n" + " <ul class=\"a-unordered-list a-vertical a-spacing-none\">\n" + " \n" + " \n" + " <li><span class=\"a-list-item\"> \n" + " 100% Washed Twill\n" + " \n" + " </span></li>\n" + " \n" + " <li><span class=\"a-list-item\"> \n" + " Imported\n" + " \n" + " </span></li>\n" + " \n" + " <li><span class=\"a-list-item\"> \n" + " Rubber sole\n" + " \n" + " </span></li>\n" + " \n" + " <li><span class=\"a-list-item\"> \n" + " Shaft measures approximately Low-Top\" from arch\n" + " \n" + " </span></li>\n" + " \n" + " <li><span class=\"a-list-item\"> \n" + " Heel measures approximately 0.75\"\n" + " \n" + " </span></li>\n" + " \n" + " <li><span class=\"a-list-item\"> \n" + " Platform measures approximately 0.5\"\n" + " \n" + " </span></li>\n" + " \n" + " <li><span class=\"a-list-item\"> \n" + " Slip-on canvas sneaker featuring laceless vamp and small logo tags at tongue and topline\n" + " \n" + " </span></li>\n" + " \n" + " </ul>\n" + " <!-- Loading EDP related metadata -->\n" + " \n" + " \n" + " \n\n" + " \n\n\n\n\n" + "<span class=\"edp-feature-declaration\" data-edp-feature-name=\"featurebullets\" data-edp-asin=\"B00NNA39IE\" data-data-hash=\"3757568849\" data-defects=\"[{&quot;id&quot;:&quot;defect-mismatch-info&quot;,&quot;value&quot;:&quot;Different from product&quot;},{&quot;id&quot;:&quot;defect-missing-information&quot;,&quot;value&quot;:&quot;Missing information&quot;},{&quot;id&quot;:&quot;defect-unessential-info&quot;,&quot;value&quot;:&quot;Unimportant information&quot;},{&quot;id&quot;:&quot;defect-other-productinfo-issue&quot;,&quot;value&quot;:&quot;Other&quot;}]\" data-metadata=\"CATALOG\" data-feature-container-id=\"\" data-custom-event-handler=\"\" data-display-name=\"Bullet Points\" data-edit-data-state=\"featureBulletsEDPEditData\" data-position=\"\" data-resolver=\"CQResolver\"></span>\n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n\n" + " \n\n" + " \n\n" + " \n" + "</div>\n\n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n" + " \n\n" + " \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n" + " </div>"; 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