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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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

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 = "在此输入你的正则表达式"; final String string = "A(\"Excalibur\", \"誓约胜利之剑\", LONG_SWORD, (SPFX_NOGEN | SPFX_RESTR | SPFX_SEEK | SPFX_DEFN | SPFX_INTEL | SPFX_SEARCH), \n" + " 0, 0, PHYS(5, 10), DRLI(0, 0), NO_CARY, 0, A_LAWFUL, PM_KNIGHT, NON_PM, 4000L, NO_COLOR);\n" + "/*\n" + " * Stormbringer only has a 2 because it can drain a level,\n" + " * providing 8 more.\n" + " */\n" + "A(\"Stormbringer\", \"兴风者\", RUNESWORD,\n" + " (SPFX_RESTR | SPFX_ATTK | SPFX_DEFN | SPFX_INTEL | SPFX_DRLI), 0, 0,\n" + " DRLI(5, 2), DRLI(0, 0), NO_CARY, 0, A_CHAOTIC, NON_PM, NON_PM, 8000L,\n" + " NO_COLOR);\n" + "/*\n" + " * Mjollnir will return to the hand of the wielder when thrown\n" + " * if the wielder is a Valkyrie wearing Gauntlets of Power.\n" + " */\n" + "A(\"Mjollnir\", \"雷神之锤\", WAR_HAMMER, /* Mjo:llnir */\n" + " (SPFX_RESTR | SPFX_ATTK), 0, 0, ELEC(5, 24), NO_DFNS, NO_CARY, 0,\n" + " A_NEUTRAL, PM_VALKYRIE, NON_PM, 4000L, NO_COLOR);\n" + "A(\"Cleaver\", \"撕裂者\", BATTLE_AXE, SPFX_RESTR, 0, 0, PHYS(3, 6), NO_DFNS, NO_CARY, 0, A_NEUTRAL, PM_BARBARIAN, NON_PM, 1500L, NO_COLOR);\n" + "/*\n" + " * Grimtooth glows in warning when elves are present, but its\n" + " * damage bonus applies to all targets rather than just elves\n" + " * (handled as special case in spec_dbon()).\n" + " */\n" + "A(\"Grimtooth\", \"邪兽之牙\", ORCISH_DAGGER, (SPFX_RESTR | SPFX_WARN | SPFX_DFLAG2),\n" + " 0, M2_ELF, PHYS(2, 6), NO_DFNS,\n" + " NO_CARY, 0, A_CHAOTIC, NON_PM, PM_ORC, 300L, CLR_RED);\n" + "/*\n" + " * Orcrist and Sting have same alignment as elves.\n" + " *\n" + " * The combination of SPFX_WARN+SPFX_DFLAG2+M2_value will trigger\n" + " * EWarn_of_mon for all monsters that have the M2_value flag.\n" + " * Sting and Orcrist will warn of M2_ORC monsters.\n" + " */\n" + "A(\"Orcrist\", \"杀兽剑\", ELVEN_BROADSWORD, (SPFX_WARN | SPFX_DFLAG2), 0, M2_ORC, PHYS(5, 0), \n" + " NO_DFNS, NO_CARY, 0, A_CHAOTIC, NON_PM, PM_ELF, 2000L, CLR_BRIGHT_BLUE); /* bright blue is actually light blue */"; 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