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

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 = "^(.*?) = \\{ Hash=(?P<hash>\\d*), X=(?P<x>\\d*), Y=(?P<y>\\d*), Rot=(?P<rot>\\d*), Flip=(?P<flip>\\d*), Var=(?P<var>\\d*) \\}"; final String string = "Language = \"Traditional Chinese\"\n" + "Hideout Name = \"藏身處 - 羅雀後街\"\n" + "Hideout Hash = 62635\n\n" + "倉庫 = { Hash=3230065491, X=265, Y=227, Rot=0, Flip=0, Var=0 }\n" + "公會倉庫 = { Hash=139228481, X=340, Y=231, Rot=15326, Flip=0, Var=0 }\n" + "傳送點 = { Hash=1224707366, X=298, Y=385, Rot=22179, Flip=0, Var=1 }\n" + "工藝台 = { Hash=2059629901, X=308, Y=288, Rot=32768, Flip=0, Var=4 }\n" + "黃金地球儀 = { Hash=2306038834, X=298, Y=227, Rot=0, Flip=0, Var=0 }\n" + "娜瓦莉 = { Hash=693228958, X=322, Y=260, Rot=32768, Flip=0, Var=0 }\n" + "埃哈 = { Hash=2684274993, X=325, Y=191, Rot=34826, Flip=0, Var=0 }\n" + "艾瓦 = { Hash=2115859440, X=265, Y=207, Rot=16384, Flip=0, Var=0 }\n" + "赫蓮娜 = { Hash=845403974, X=314, Y=238, Rot=47093, Flip=0, Var=0 }"; 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