This rule is defined by the following XPath expression:
//ClassOrInterfaceDeclaration[ not(ClassOrInterfaceBody/ClassOrInterfaceBodyDeclaration/ConstructorDeclaration) and (@Static = 'false') and (count(./descendant::MethodDeclaration[@Static]) < 1) ] [@Interface='false']
Example:
public class Foo { // no constructor! not good! }