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

r"
"
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<mounting_type>Z)(?P<number_of_positions>4)(?P<unit_type>W)(?P<actuation_type>EH|H)(?P<unit_size>22)(?P<spool_symbol>E62|E63)(?P<sep_1>-)(?P<unit_series>5X)(?P<sep_2>/)(?P<pilot_valve>6|)(?P<type_of_solenoid>E|)(?P<solenoid_in_ac_or_dc_version>G|W|)(?P<voltage_of_solenoid>230|220|205|200|180|125|120|110|100|96|48|26|24|12|)(?P<manual_override_unit>N9|N|)(?P<control_volume_flow>ET|T|)(?P<unit_for_time_adjustment>S2|S|)(?P<electrical_connection>K4|)(?P<type_of_limit_switch>QM|)(?P<monitored_limit_switch_position>AB|A|B|0|)(?P<power_supply_of_limit_switch>G24|)(?P<sep_3>/|)(?P<stroke_setting>10|11|12|)(?P<orifice_position>B|)(?P<orifice_diameter>08|10|)(?P<pressure_reducing_valve>D3|)(?P<seal_material>V|)(?P<additional_details>(.|[0-9])*)$\n"; final String string = "typecode\n" + "Z4WH22E63-5X/\n" + "Z4WEH22E63-5X/6EG24NTK4/V\n" + "Z4WEH22E63-5X/6EG24N9ETK4QMBG24/B10\n" + "Z4WEH22E63-5X/6EG24NTK4QMAG24\n" + "Z4WEH22E63-5X/6EG24K4QMAG24SO32\n" + "Z4WEH22E63-5X/6EG24TK4QMAG24=CSA\n" + "Z4WEH22E63-5X/6EW230N9ETK4/B10\n" + "Z4WEH22E63-5X/6EW230N9ETS2K4/B10D3V\n" + "Z4WEH22E63-5X/6EG24N9K4/B10SO16\n" + "Z4WEH22E63-5X/6EG24N9ETK4/B08\n" + "Z4WEH22E63-5X/6EG24N9ETS2K4/B10D3\n" + "Z4WEH22E63-5X/6EG24N9TK4\n" + "Z4WEH22E63-5X/6EW230N9ETS2K4/B10D3\n" + "Z4WEH22E63-5X/6EG24ETK4QMAG24/B10D3\n" + "Z4WEH22E63-5X/6EG24N9ETK4/B10D3\n" + "Z4WEH22E63-5X/6EG24TK4QMAG24\n" + "Z4WEH22E63-5X/6EG24N9ETS2K4/B10\n" + "Z4WEH22E63-5X/6EW110N9ETS2K4/B10D3\n" + "Z4WEH22E63-5X/6EG24ETK4/B08\n" + "Z4WEH22E63-5X/6EG24N9ETS2K4QMBG24/B10\n" + "Z4WEH22E63-5X/6EG24ETK4QMAG24/B10\n" + "Z4WEH22E63-5X/6EG24N9K4QMAG24SO32\n" + "Z4WEH22E63-5X/6EG24N9TS2K4/B10\n" + "Z4WEH22E63-5X/6EG24N9TK4QMBG24\n" + "Z4WEH22E63-5X/6EG24N9K4/B10SO32\n" + "Z4WEH22E63-5X/6EG24N9EK4QMAG24/B10SO32\n" + "Z4WEH22E63-5X/6EG24ETK4QMABG24/B10\n" + "Z4WEH22E63-5X/6EG24N9ETK4/B10\n" + "Z4WEH22E63-5X/6EG24N9K4SO32\n" + "Z4WEH22E63-5X/6EG96N9ETK4QMAG24/B10\n" + "Z4WEH22E63-5X/6EG24N9K4/B10VSO16\n" + "Z4WEH22E62-5X/6EG24N9ETK4/B10D3\n" + "Z4WEH22E63-5X/6EW110ETK4QMAG24/B10\n" + "Z4WEH22E63-5X/6EG24N9ETK4QMAG24/B10\n" + "Z4WEH22E63-5X/6EW110N9TK4\n" + "Z4WEH22E63-5X/6EG24TK4QMABG24SO32\n" + "Z4WEH22E63-5X/6EG24N9K4QMAG24/B10SO16\n" + "Z4WEH22E63-5X/6EG24N9ETK4/B10V\n" + "Z4WEH22E63-5X/6EG24K4QMAG24SO16\n" + "Z4WEH22E63-5X/6EG24N9ETK4QMABG24/B10\n" + "Z4WEH22E63-5X/6EG24N9TK4QMAG24/B10\n" + "Z4WEH22E63-5X/6EG24N9ETK4QMAG24/B10V\n" + "Z4WEH22E63-5X/6EG96N9TK4/B10V\n" + "Z4WEH22E63-5X/6EG24N9ETK4QMAG24/B10D3\n" + "Z4WEH22E63-5X/6EG24ETK4QMBG24/B10\n" + "Z4WEH22E63-5X/6EG24N9TK4QMAG24/B10D3\n" + "Z4WEH22E63-5X/6EG24TK4QMBG24/B10\n" + "Z4WEH22E63-5X/6EW110N9ETK4/B10D3\n" + "Z4WEH22E63-5X/6EG24N9EK4QMAG24/B10D3SO32\n" + "Z4WEH22E63-5X/6EG24TK4QMABG24/B10\n" + "Z4WEH22E63-5X/6EG24N9K4QMABG24SO32\n" + "Z4WEH22E63-5X/6EG24N9ETK4QMBG24/B10V\n" + "Z4WEH22E63-5X/6EG24NTK4\n" + "Z4WEH22E63-5X/6EG24N9DK23L\n" + "Z4WEH22E63-5X/6EW110N9ETS2K4/B10D3\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