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 = "\"logUser\"\\s*\\:([^\\,]+),"; final String string = "{\n" + " \"id\": 1,\n" + " \"numeracao\": \"001\",\n" + " \"logUser\": 100,\n" + " \"permissionario\": {\n" + " \"id\": 3113715,\n" + " \"nome\": \"ARTHUR MATHEUS SÉRGIO DA SILVA\",\n" + " \"dataDeNascimento\": \"2000-12-10\",\n" + " \"endLogradouro\": \"RUA TERESINA\",\n" + " \"endNumero\": \"89465468\",\n" + " \"endBairro\": \"ROSA DOS VENTOS\",\n" + " \"endCidade\": \"PARNAMIRIM\",\n" + " \"endUf\": \"RN\",\n" + " \"endCep\": \"59142125\",\n" + " \"endComplemento\": null,\n" + " \"telefoneFixo\": null,\n" + " \"telefoneMovel\": \"(94) 949849849\",\n" + " \"email\": null,\n" + " \"logDate\": \"2019-01-16\",\n" + " \"logUser\": null,\n" + " \"sexo\": \"MASCULINO\",\n" + " \"foto\": null,\n" + " \"cpf\": \"10322314593\",\n" + " \"estadoCivil\": \"CASADO\",\n" + " \"cnhNumero\": null,\n" + " \"cnhCategoria\": null,\n" + " \"cnhValidade\": null,\n" + " \"rgNumero\": \"64684654\",\n" + " \"rgOrgaoExpeditor\": \"SSP\",\n" + " \"rgDataEmissao\": null,\n" + " \"rgUF\": \"RN\",\n" + " \"status\": true\n" + " },\n" + " \"veiculo\": { \n" + " \"id\": 3,\n" + " \"placa\": \"JUQ9196\",\n" + " \"marca\": \"RENAULT\",\n" + " \"modelo\": \"SC\",\n" + " \"renavam\": \"54840252144\",\n" + " \"anoDeFabricacao\": \"2006\",\n" + " \"corPredominante\": \"BRANCO\",\n" + " \"logCidadao\": null,\n" + " \"status\": true,\n" + " \"logUser\": null,\n" + " \"logDate\": \"2019-01-16T11:05:10.425\",\n" + " \"version\": 1\n" + " },\n" + " \"logDate\": \"2019-01-16T11:05:13.264\",\n" + " \"status\": true,\n" + " \"version\": 0,\n" + " \"motorista\": {\n" + " \"id\": 3113717,\n" + " \"nome\": \"DAVI LEVI GALVÃO\",\n" + " \"dataDeNascimento\": \"1996-10-20\",\n" + " \"endLogradouro\": \"RUA FRANCISCO FERREIRA DA SILVA\",\n" + " \"endNumero\": \"911\",\n" + " \"endBairro\": \"VALE DO SOL\",\n" + " \"endCidade\": \"PARNAMIRIM\",\n" + " \"endUf\": \"RN\",\n" + " \"endCep\": \"59143025\",\n" + " \"endComplemento\": null,\n" + " \"telefoneFixo\": \"8429884472\",\n" + " \"telefoneMovel\": \"84995302167\",\n" + " \"email\": \"ddavilevigalvao@mtic.net.br\",\n" + " \"logDate\": \"2019-01-16\",\n" + " \"logUser\": null,\n" + " \"sexo\": \"MASCULINO\",\n" + " \"foto\": null,\n" + " \"cpf\": \"98842966428\",\n" + " \"estadoCivil\": \"CASADO\",\n" + " \"cnhNumero\": null,\n" + " \"cnhCategoria\": null,\n" + " \"cnhValidade\": null,\n" + " \"rgNumero\": \"184962122\",\n" + " \"rgOrgaoExpeditor\": \"SSP\",\n" + " \"rgDataEmissao\": null,\n" + " \"rgUF\": \"RN\",\n" + " \"status\": true\n" + " }\n" + "}\n"; 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