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

/
/
g

Test String

Code Generator

Generated Code

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String[] args) { final String regex = "(?:A|B|C|D|E|1\\)|2\\)|3\\)|4\\)|5\\)){0,1}(?:\\:|\\.|\\ ){0,1}[^0-9]{0,2}((?:[\\d]{1,2}[\\s|\\+]{1}){0,4}[\\d]{1,2})[\\s]{0,1}\\*[\\s]{0,1}((?:[\\d]{1,2}\\+[\\s]{0,2}){0,98}[\\d]{1,2})(?![\\+|\\-|\\d])[\\s]{1,3}((?:[\\d]{1,2}\\+){0,98}[\\d]{1,2})"; final String string = " 07 12 21 23 24*01+07+\n" + " 03+05+08+10+11+13+18+\n" + " 19+26+28+29+30+31+32\n" + " 03+04+07+08+09+12\n\n" + "销 轡 时 间 : 12 . . 14 07 : : 15 金 额 : 28 元\n" + "A.34+13+13+13+15+35+98-12+12+12 \n" + "1aaa -foosdsdsdTom Thumb\n" + " 02+13+13+13+15*05+89-89+12\n" + "5s-90\n" + "1)红球: 8 10 11 18 20 24 29 \n" + " 23 34 \n" + " 藍球: 5 15 \n" + "B. 红复 : 99 10 11 18 20 24 29 \n" + " 藍复 : 55 15 \n" + "倍 数 : 1 \n\n" + "A.91 12 23 01 12 23 - 12 (1)\n" + "***01 12 23 9 12 23+88 (10)\n" + "3.01 12 23 9 55 23+ 88 (10)\n" + "E:01 12 23 01 12 8 - 12 x999\n"; final Pattern pattern = Pattern.compile(regex); 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