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

/
/
mi

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 id=\"myScreen\"[\\s\\S]*?<\\/div>\\s*<\\/form>"; final String string = "<!DOCTYPE html>\n" + "<html class=\"no-js\" lang=\"en\">\n" + "<head>\n" + "<meta charset=\"utf-8\">\n" + "<meta http-equiv=\"x-ua-compatible\" content=\"ie=edge\">\n" + "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n" + "<link rel=\"stylesheet\" href=\"assets/css/app.css\"></link>\n" + "<title>App Android</title>\n" + "</head>\n" + "<form action=\"#\" class=\"formulario\" name=\"formulario\">\n" + "<style>\n" + " .campo-texto {\n" + " color: #7B7D7D;\n" + " height: 30px;\n" + " position: absolute;\n" + " padding: 0px 5px 0px 5px;\n" + " border-style: ridge;\n" + " resize: horizontal;\n" + " overflow-x: hidden;\n" + " overflow-y: hidden;\n" + " background-color: white;\n" + " text-align: left;\n" + " border-radius: 6px;\n" + " }\n" + " .campo-botao {\n" + " position: absolute;\n" + " height: 28px;\n" + " width: 80px;\n" + " border: 2px solid rgba(0, 0, 0, 0.3);\n" + " text-align: center;\n" + " border-radius: 6px;\n" + " box-shadow: 2px 2px 2px #888;\n" + " overflow: hidden;\n" + " }\n" + " .campo-prompt {\n" + " position: absolute;\n" + " min-height: 20px;\n" + " display: inline-block;\n" + " padding: 0px 5px 0px 5px;\n" + " border: 1px dotted black;\n" + " border-radius: 6px;\n" + " }\n" + " .a9-screen-dimension {\n" + " position: relative;\n" + " margin: 0px;\n" + " width: 340px;\n" + " height: 540px;\n" + " border: 1px solid black;\n" + " background-color: #CED7E5;\n" + " overflow: hidden;\n" + " }\n" + "</style>\n" + "<body>\n" + "<div id=\"myScreen\" class=\"a9-screen-dimension\" tabindex=\"0\"> \n" + " <div id=\"promptId0\" class=\"campo-prompt\" draggable=\"true\" style=\"top:68.625px; left:65.84375px;\" tabindex=\"0\">Prompt</div><button id=\"botaoId1\" class=\"campo-botao\" draggable=\"true\" style=\"top:235.625px; left:77.84375px;\" tabindex=\"0\" myselection=\"salvar\">Salvar</div></div>\n" + "</div>\n" + "</form>\n" + "<script>\n" + "function send(toast) {\n" + " var cod = formulario.cod.value;\n" + " Android.sendDataToAndroid(cod);\n" + "}\n" + "</script>\n" + "</body>\n" + "</html>"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.CASE_INSENSITIVE); 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