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 = "(?P<mesini>\\d{2})(?P<diaini>\\d{2})(?P<horaini>\\d{2})(?P<minini>\\d{2})\\s(?P<duracaosegundo>\\d{5})\\s\\d{4}\\s(\\w|\\s)\\s{6}\\s\\s(?<rota>(\\d{4})|\\s{4})\\s{6,18}(?<numerob>\\d{4})\\s(?<ramal>\\d{4,8})\\s{20,24}(?P<senha>(\\d{6}|\\s{6}))\\s{8}\\d{2}\\s(?<tronco>(\\d{5}|\\s{5}))(?<nodetrunk>\\d{4})\\n"; final String string = "06191520 00102 0000 J 4776 6512 00 4776\n" + " \n" + "06191522 00118 0000 4770 6512 00 024017001\n" + " \n" + "06191535 00037 0000 I 6512 98311871 00 6512\n" + "06191532 00000 0000 B 6512 98311871 00 \n" + " \n" + "06191529 00141 0000 M 0 2470 999308509 6512 00 002002003\n" + " \n" + "06191555 01854 0000 M 0 2470 33485083 6512 00 002002003\n" + " \n" + "06191655 00151 0000 M 0 2470 01128983434 6512 00 002002003\n" + "06191656 00011 0000 M 0 2470 01128983434 6512 00 002002009\n" + "06191658 00130 0000 T 0 2470 01128983434 4776 00 002002009\n" + "06191701 00137 0000 M 0 2470 01128983434 6512 00 002002009\n" + "06191701 00000 0000 0 2470 01128983434 4776 00 002002009\n" + " \n" + "06191632 00034 0000 J 4776 6512 00 4776\n" + "06191632 00034 0000 J 4776 6512 00 4776\n" + "06191634 00203 0000 T 0 2470 999308509 4776 00 002002001\n" + " \n" + "06191630 00001 0000 J 6361 6512 00 6361\n" + "06191630 00001 0000 J 6361 6512 00 6361\n" + " \n" + "06191644 00009 0000 M 0 2470 33283828 6512 00 002002007\n" + "06191645 00136 0000 T 0 2470 33283828 4776 00 002002007\n" + " \n" + "06191632 00001 0000 M 0 2470 999308509 6512 00 002002001\n" + "06191634 00203 0000 T 0 2470 999308509 4776 00 002002001\n" + " \n" + "06191656 00011 0000 M 0 2470 01128983434 6512 00 002002009\n" + "06191658 00130 0000 T 0 2470 01128983434 4776 00 002002009\n" + " \n" + "06191644 00009 0000 M 0 2470 33283828 6512 00 002002007\n" + "06191645 00136 0000 T 0 2470 33283828 4776 00 002002007\n" + " \n" + "06191632 00001 0000 M 0 2470 999308509 6512 00 002002001\n" + "06191634 00203 0000 T 0 2470 999308509 4776 00 002002001\n" + "06191652 00106 0000 M 0 2470 999308509 6512 00 002002003\n" + "06191652 00000 0000 0 2470 999308509 6512 00 002002003\n" + " \n" + "06191656 00011 0000 M 0 2470 01128983434 6512 00 002002009\n" + "06191658 00130 0000 T 0 2470 01128983434 4776 00 002002009\n" + "06191701 00137 0000 M 0 2470 01128983434 6512 00 002002009\n" + "06191701 00000 0000 0 2470 01128983434 4776 00 002002009\n" + " \n" + "06220921 00130 0000 M 0 2470 012997319079 6512 00 002002002\n" + " \n" + "06220922 00004 0000 M 0 2470 012997319079 6512 00 002002005\n" + "06220924 00157 0000 T 0 2470 012997319079 4776 00 002002005\n" + " \n" + "06220926 00144 0000 M 0 2470 012997319079 6512 00 002002006\n" + "06220926 00009 0000 0 2470 012997319079 4776 00 002002006\n" + " \n" + "06220935 00347 0000 M 0 2470 33485083 6512 578129 00 002002001\n" + " \n" + "06220938 00211 0000 M 0 2470 999308509 6512 578129 00 002002002\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