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

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 = "(?<g1>^.+)(?<g2>\\|)(?<g3>\\w*)"; final String string = "VERNIZ FOSCO PU 5:1|6190734832\n" + "VERNIZ FOSCO PU BICO|6190737676\n" + "VERNIZ FOSCO SAYERLACK 900ML|5482326670\n" + "VERNIZ MARITIMO INCOLOR - [3,6 LT]|6605544243\n" + "VERNIZ MARITIMO INCOLOR - [900 ML]|6605544245\n" + "VERNIZ PU 0491 - DUXONE|2739465076\n" + "VERNIZ PU 10.000 SKYLACK|5026534877\n" + "VERNIZ PU 6100 - LAZZURIL|2422595915\n" + "VERNIZ PU 8050 - LAZZURIL|2422595909\n" + "VERNIZ PU BRILHO 20|5109244189\n" + "VERNIZ PU FOSCO - LAZZURIL|2730718333\n" + "VERNIZ PU FOSCO - [750 ML] - SKYLACK|3551612362\n" + "VERNIZ PU MASCARA NEGRA|4988056487\n" + "VERNIZ PU SEMI-FOSCO|4717802264\n" + "VERNIZ PU SEMI-FOSCO - 3600 ML - FARBEN|3850897363\n" + "VERNIZ PU SEMI-FOSCO - 750 ML|4909315994\n" + "VERNIZ PU SEMI-FOSCO - 900 ML - FARBEN|3850897360\n" + "VERNIZ PU SEMI-FOSCO 750ML|5026534871\n" + "VERNIZ PU TRANSPARENTE FOSCO – 6713 - SAYERLACK|3475203973\n" + "VERNIZ SKYFAST HS 5:1 - SKYDUR - [900 ML]|4359364616\n" + "VERNIZ ULTRA 7000|2587796536\n" + "VESUVIO|4507424840\n" + "VIOLETA PU C/ CAT|6902409301\n" + "WASH PRIMER - [600 M|6190739255\n" + "WASH PRIMER - [600 ML] - BRAZILIAN|6121038554\n" + "WASH PRIMER VINILICO|6190737471\n" + "WASH/PRETO FOSCO - DX9000 - [600 ML] - BRASILUX - KIT|2422594658\n" + "WASH/PRETO FOSCO - DX9000 - [600 ML] - DUXONE - KIT|3147792988\n" + "WASH/PRETO FOSCO - [600 ML] - MAXIRUBBER|4528448069\n" + "WASH/PRETO FOSCO - [900 ML] - MAZA - KIT|3583355677\n" + "WASHPRIMER 1/4|6190735139\n" + "WHITE LUB - [300 ML]|4648227158\n" + "ZARCAO - [3,6 LT]|6605544226\n"; final String subst = "${g3}"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE); 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