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 = "\\s+(?:ST|DR|AVE|TRL|BLVD|LN|CT|RD|CV|CMNS|CRK|XING|SQ|CRST|LNDG|LOOP|OVAL|ROW|TER|TRCE)\\b.*"; final String string = "505 BLACKBERRY\n" + "135 BEARDSLEY ST\n" + "15 HUNT CLUB DR\n" + "1223 STATE ROUTE 103\n" + "455 STATE RTE 43\n" + "206 COUNTY RD 4710\n" + "17 E 250TH ST\n" + "158 BALLINGER AVE SE\n" + "150 BALLINGER AVE S\n" + "18 BALLINGER AVE T\n" + "1272 ORANGE SUN TRL\n" + "291 S MORELAND BLVD\n" + "615 RUSSET WOOD LN\n" + "1165 MORROCCO CT\n" + "1321 S PKWY DR\n" + "250 COUNTY RD 25A S\n" + "22 SANSTONE RIDGE WAY\n" + "55070 MENDOZA TRL\n" + "1609 HUNTSMERE AVE DOWN\n" + "243 MISTY WOODS CV S\n" + "2292 BAYBERRY CMNS\n" + "16 KILDEER CRK\n" + "40 BEDFORD XING\n" + "4 LEXINGTON SQ\n" + "113 SPARROWS CRST\n" + "1082 MATHOM LNDG\n" + "1050 WILLOW RIDGE LOOP\n" + "660 REDTOP LOOP\n" + "8 MOUNT ROYAL LOOP\n" + "805 SIERRA OVAL\n" + "3012 NANTUCKET ROW\n" + "6 WOODROW AVE\n" + "943 DARROW PARK DR\n" + "743 BELVEDERE TER\n" + "189 WINCHESTER RD\n" + "19 WHITE OAK TRCE\n" + "890 BLACKJACK RD EXT\n" + "767 N EXCALIBUR DR\n" + "109 VININGS FOREST LN SE\n" + "508 E 141ST ST\n" + "85 ROSE LN ST SW"; 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