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
Processing...

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 = "(?:\\'\\,\\[\\]\\)\\d{0,10}\\ then\\ begin\\s?)^(.*?)\\bend;"; final String string = "e R$ '+FormatFloat('#,##0.00', valorPercentual )\n" + " else\n" + " FieldByName('InstrucoesMultaVencimento').Value := '';\n" + " end;\n\n" + " if oCDS_CONVENIOBANCARIOCOBREBEMPROP.Locate('CBC_NOMEPROPRIEDADE','InstrucoesDiasProtesto',[]) then begin\n" + " AlteraDescricaoInstrucao := oCDS_CONVENIOBANCARIOCOBREBEMPROP.FieldByName('CBC_VALORPROPRIEDADE').AsString;\n" + " AlteraDescricaoInstrucao := StringReplace( AlteraDescricaoInstrucao,'#DIA#', FloatToStr(oCds_ConvenioBanco.FieldByName('CBP_PROTESTODIAS').AsFloat),[rfReplaceAll, rfIgnoreCase]);\n" + " FieldByName('InstrucoesDiasProtesto').Value := AlteraDescricaoInstrucao;\n" + " end else begin\n" + " if ( oCds_ConvenioBanco.FieldByName('CBP_PROTESTODIAS').AsFloat > 0 ) then\n" + " FieldByName('InstrucoesDiasProtesto').Value := 'Após '+IntToStr(oCds_ConvenioBanco.FieldByName('CBP_PROTESTODIAS').AsInteger)+' dias do vencimento protestar'\n" + " else\n" + " FieldByName('InstrucoesDiasProtesto').Value := ''; end;\n\n" + " if ( oCds_ConvenioBanco.FieldByName('CBP_CALCULAVALORJURO').AsString = 'P' ) then\n" + " valorJuroDiario := ( ( BoletoBancario.ConvenioBancario.ValorDocumento * oCds_ConvenioBanco.FieldByName('CBP_PERCENTUALJUROSDIARIO').AsFloat) / 100)\n" + " else\n" + " valorJuroDiario := oCds_ConvenioBanco.FieldByName('CBP_PERCENTUALJUROSDIARIO').AsFloat;\n\n" + " if oCDS_CONVENIOBANCARIOCOBREBEMPROP.Locate('CBC_NOMEPROPRIEDADE','InstrucoesJurosDiario',[]) then\n" + " FieldByName('InstrucoesJurosDiario').Value := oCDS_CONVENIOBANCARIOCOBREBEMPROP.FieldByName('CBC_VALORPROPRIEDADE').AsString\n" + " else begin\n" + " if ( oCds_ConvenioBanco.FieldByName('CBP_PERCENTUALJUROSDIARIO').AsFloat > 0 ) then\n" + " FieldByName('InstrucoesJurosDiario').Value := 'Após vencimento cobrar juros de R$ '+FormatFloat('#,##0.00', valorJuroDiario)+' por dia de atraso.'\n" + " else\n" + " FieldByName('InstrucoesJurosDiario').Value := ''\n" + " end;\n\n" + " if ( BoletoBancario.ConvenioBancario.OutrasInstrucoes <> '' ) then\n" + " OutrasIntrucoes := oCds_ConvenioBanco.FieldByName('CBB_OUTRASINSTRUCOES').AsString\n" + " else\n" + " OutrasIntrucoes := '';\n\n" + " if ( NumeroNFSe <> 'SemNumero' ) then{#T31720}\n" + " OutrasIntrucoes := OutrasIntrucoes + 'Boleto ref. a Notas: ' + NumeroNFSe; // NumeroNF; {#T31549}\n\n" + " if ( NumeroNF <> 'SemNumero' ) then begin{#T31720}\n" + " if ( OutrasIntrucoes <> '') then begin\n" + " OutrasIntrucoes := OutrasIntrucoes+#13#10+ 'RPS: ' + NumeroNF; // NumeroNFSe; {#T31549}\n" + " end else\n" + " OutrasIntrucoes := 'Boleto ref. a RPS: ' + NumeroNF; // NumeroNFSe; {#T31549}\n" + " end;varToStr( copy( BoletoBancario.ConvenioBancario.NumeroContaCorrente, Length(BoletoBancario.ConvenioBancario.NumeroContaCorrente), 1));\n\n" + " FieldByName('NomeSacado').Value := IntToStr(BoletoBancario.CodigoCliente)+' - '+BoletoBancario.NomeCliente;\n" + " FieldByName('RuaSacado').Value := oCds_TitulosSelecionados.FieldByName('CLN_ENDERECO').AsString+', Nº '+\n" + " oCds_TitulosSelecionados.FieldByName('CLN_NUMERO').AsString;\n\n" + " cepCliente := FormatMaskText('99999-999;0;', oCds_TitulosSelecionados.FieldByName('CEP_CEP').AsString);\n" + " FieldByName('CidadeEstadoCep').Value := cepCliente+' '+\n" + " BoletoBancario.CidadeCliente+'-'+\n" + " BoletoBancario.EstadoCliente;\n\n" + " Carteira := Codig"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.DOTALL); 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