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Sanity4J was created to simplify running multiple static code analysis tools on the Java projects. It provides a single entry point to run all the selected tools and produce a consolidated report, which presents all findings in an easily accessible manner.

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UseVarargs

UseVarargs

Minimum Language Version: java 1.5
Java 5 introduced the varargs parameter declaration for methods and constructors. This syntactic sugar provides flexibility for users of these methods and constructors, allowing them to avoid having to deal with the creation of an array.


//FormalParameters/FormalParameter
    [position()=last()]
    [@Array='true']
    [@Varargs='false']
    [not (./Type/ReferenceType[@Array='true'][PrimitiveType[@Image='byte']])]
    [not (./Type/ReferenceType[ClassOrInterfaceType[@Image='Byte']])]
    [not (./Type/PrimitiveType[@Image='byte'])]
    [not (ancestor::MethodDeclaration/preceding-sibling::Annotation/*/Name[@Image='Override'])]
    [not(
        ancestor::MethodDeclaration
            [@Public='true' and @Static='true']
            [child::ResultType[@Void='true']] and
        ancestor::MethodDeclarator[@Image='main'] and
        ..[@ParameterCount='1'] and
        ./Type/ReferenceType[ClassOrInterfaceType[@Image='String']]
    )]

Example(s):


public class Foo {
   public void foo(String s, Object[] args) {
      // Do something here...
   }

   public void bar(String s, Object... args) {
      // Ahh, varargs tastes much better...
   }
}