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

/
/
g

Test String

Substitution

Processing...

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 = "(\\\\r|\\\\n|\\\\)"; final String string = "\"\\r\\n\\r\\n\\r\\n\\r\\n\\r\\n\\r\\nSalvar\\r\\n\\r\\n\\r\\n\\r\\n\\r\\n\\r\\n\\r\\n\\r\\n\\r\\n\\r\\n\\r\\n<a class=\\\"linkModuleActionButt\\ron\\\" href=\\\"https://go.hotmart.com/G9680456D?src=pinterest1\\\" rel=\\\"nofollow\\\" =\\\"color: 333333; font-weight: bold; text-decoration-line: none;\\\">\\r\\n\\r\\ngo.hotmart.com</a></di\\rv>\\r\\n\\r\\n\\r\\n\\r\\n\\r\\n\\r\\n\\r\\n<a class=\\\"Wk9 xQ4 CCY czT ljY kVc eEj\\\" href=\\\"https://go.hotmart.com/G9680456D?src=pinterest1\\\" rel=\\\"noopener noreferrer nofollow\\\" target=\\\"_blank\\\" =\\\"color: 444444; text-decoration-line: none; outline: 0px; transition: transform 85ms ease-out 0s; display: block; border-radius: calc(var(--g-boint)*0);\\\">\\r\\nConheça Sua Bíblia de Capa a Capa | CV – Esboçando Ideias</a>\\r\\n\\r\\n\\r\\nUm curso online onde você vai aprender a Bíblia de Gênesis a Apocalipse, totalmente online, e do conforto do seu lar\\r\\n\\r\\n\\r\\n<di\\rv class=\\\"Jea gjz zI7 iyn Hsu\\\" =\\\"display: flex; flex-direction: row; box-sizing: border-box; align-items: center;\\\">\\r\\n\\r\\n\\r\\nComentários\""; final String subst = ""; 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