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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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UnnecessaryConstructor

UnnecessaryConstructor

This rule detects when a constructor is not necessary; i.e., when there is only one constructor, its public, has an empty body, and takes no arguments.


                    
//ClassOrInterfaceBody[count(ClassOrInterfaceBodyDeclaration/ConstructorDeclaration)=1]
/ClassOrInterfaceBodyDeclaration/ConstructorDeclaration
[@Public='true']
[not(FormalParameters/*)]
[not(BlockStatement)]
[not(NameList)]
[count(ExplicitConstructorInvocation/Arguments/ArgumentList/Expression)=0]
                    

Example(s):


  
public class Foo {
  public Foo() {}
}