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

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 = "^(LTE|RS[A-Z]+)\\s*([^:]+):\\s+(.*?)(?=\\s*$)"; final String string = "AT!GSTATUS?\n" + "!GSTATUS: \n" + "Current Time: 54902 Mode: ONLINE \n" + "System mode: LTE PS state: Attached \n" + "EMM state: Registered Normal Service \n" + "RRC state: RRC Connected \n" + "IMS reg state: No Srv \n\n" + "PCC: \n" + "LTE band: B28 \n" + "LTE bw: 10 MHz \n" + "LTE Rx chan: 9260\n" + "LTE Tx chan: 27260\n" + "RSSI (dBm): -48.0\n" + "RSRP (dBm): -74.5\n" + "RSRQ (dB): -12.2\n" + "RSSNR (dB): 12\n" + "Tx Power (dBm): \n" + "LTE Cell ID: 23198257\n" + "Physical Cell ID: 307\n" + "TAC: 57506\n\n" + "SCC1: \n" + "LTE band: B1 \n" + "LTE bw: 15 MHz \n" + "LTE Rx chan: 275\n" + "RSSI (dBm): -59.5\n" + "RSRP (dBm): -87.5\n" + "RSRQ (dB): -9.2\n" + "Physical Cell ID: 412\n\n\n" + "OK"; final String subst = ""; 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