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

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 = "^(?!-|_|\\d)\\w+(?<!\\db)-v\\d+\\.\\d+-\\w+-v\\d+\\.\\d+(-\\d+b-\\w+|-\\d+x\\d+b-\\w+-*|-\\d+b-\\w+-.*|-\\w+-\\d+b|-\\w+-\\w+-.*)"; final String string = "Should match.\n\n" + "BaseModelName-v0.3-ModelName-v0.3-8x7b-Method-Q4_0\n" + "BaseModelName-v0.4-ModelName-v12.2-2x7b-Method-QQ4_k_m\n" + "BaseModelName-v0.4-ModelName-v1.2-2x7b-Method-qq4_k_m\n" + "BaseModelName-v0.4-ModelName-v1.2-2x7b-Method-Qq4_k_m\n" + "BaseModelName-v0.4-ModelName-v1.2-2x7b-Method-qQ4_k_m\n" + "BaseModelName-v0.4-ModelName-v1.2-2x7b-Method-IQ4_S\n" + "BaseModelName-v0.4-ModelName-v1.2-2x7b-Method-IQ4_XS\n" + "BaseModelName-v0.4-ModelName-v1.2-2x7b-Method-IQ4_XXS\n" + "BaseModelName-v0.4-ModelName-v1.2-2x7b-Method-Q4\n" + "BaseModelName-v0.4-ModelName-v1.2-2x7b-Method-\n" + "BaseModelName-v0.4-ModelName-v1.2-2x7b-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-2x0.7b-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-2x0.77b-Method\n" + "BaseModelNameb-v0.4-ModelName-v1.2-2x7b-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-7b-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-0.7b-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-700M-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-70M-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-7M-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-0.7M-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-723b-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-7000b-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-7000b-Method\n" + "BaseModelName-v0.4-ModelName-v1.222222222-7000b-Method\n" + "BaseModelName-v0.4-ModelName-v1.0-7000b-Method\n" + "BaseModelName-v0.4-ModelName-v1-7000b-Method\n" + "BaseModelName-v0.4-ModelName-v1.2-Method-7b\n" + "Missingdashbetweenmethodandquantizationformat-v0.4-ModelName-v1.2-2x7b-MethodQ4_K_M\n" + "Llama-v3.0-Hermes-v2.0-7b-instruct-DPO-Q4_0.gguf\n" + "Llama-v3.0-Hermes-v2.0-instruct-DPO-7b-Q4_0.gguf\n" + "Llama-v3.0-Hermes-v2.0-7b-4k-Instruct-Merged-DPO-Q4_0\n\n" + "Mixtral-8x7b-Q5_K_M-instruct-v0.1.gguf\n" + "Mixtral-8x7b-instruct-v0.1-Q5_K_M.gguf\n" + "Hermes-2-Theta-Llama-3-8B\n" + "SOLAR-10.7B-Instruct-v1.0\n\n" + "Deviation from the pattern.\n\n" + ".StartModelNameWithNon_AlphaNumeric-v0.4-Anothername-v0.2-2x7b-Method-Q4_K_M\n" + "9StartModelNameWithNumber-v0.4-Anothername-v0.2-2x7b-Method-Q4_K_M\n" + "_StartModelNameWithUnderScore-v0.4-Anothername-v0.2-2x7b-Method-Q4_K_M\n" + "-StartModelNameWithDash-v0.4-Anothername-v0.2-2x7b-Method-Q4_K_M\n" + "Missingdashv0.4-ModelName-v0.2-2x7b-Method-Q4_K_M\n" + "Missingdash-v0.4ModelName-v0.2-2x7b-Method-Q4_K_M\n" + "Missingdash-v0.4-ModelNamev0.2-2x7b-Method-Q4_K_M\n" + "Missingdash-v0.4-ModelName-v0.22x7b-Method-Q4_K_M\n" + "Missingdash-v0.4-ModelName-v0.2-2x7bMethod-Q4_K_M\n" + "MissingParameterCount-v0.4-ModelName-v0.2-Method\n" + "MissingMethod-v0.4-ModelName-v0.2-7b\n" + "MissingMethod-v0.4-ModelName-v0.2-7b-\n" + "MissingMethod-v0.4-ModelName-v0.2-8x7b\n" + "MissingMethod-v0.4-ModelName-v0.2-8x7b-\n" + "Missing_v_afterdash-0.4-ModelName-v0.2-2x7b-Method-QQ4_K_M\n" + "BaseModelnamecontainsdash_phi-3-v0.4-Modelname-v0.2-2x7b-Method-IQ4_XXS\n" + "BaseModelnamecontainsParameterCount_phi37b-v0.4-Modelname-v0.2-2x7b-Method-IQ4_XXS"; 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