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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 = "^(SWEx-elmPCI-A-02\\.lssh\\.com)\\s+(.*?)\\s{2,}(\\d+)\\s+(.*?)\\s{2,}([^\\s]+)\\s+(.*?)$"; final String string = "Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge\n" + " S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,\n" + " D - Remote, C - CVTA, M - Two-port Mac Relay\n\n" + "Device ID Local Intrfce Holdtme Capability Platform Port ID\n" + "SWEx-elmPCI-A-02.lssh.com\n" + " Gig 2/0/1 137 R S I WS-C3750X Gig 1/0/1\n" + "SWEx-elmPCI-A-02.lssh.com\n" + " Gig 2/0/1 138 R S I WS-C3750X Gig 1/0/1\n\n" + "SWEa-elmPCI-02 Gig 1/0/4 169 T AIR-LAP12 Gig 0\n" + "SWEa-elmPCI-01 Gig 1/0/9 170 T AIR-LAP11 Gig 0"; final Pattern pattern = Pattern.compile(regex, Pattern.DOTALL | 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