This rule is defined by the following XPath expression:
//ClassOrInterfaceDeclaration[ count (ExtendsList/*) > 0 ] /ClassOrInterfaceBody /ClassOrInterfaceBodyDeclaration /ConstructorDeclaration[ count (.//ExplicitConstructorInvocation)=0 ]
Example:
public class Foo extends Bar{ public Foo() { // call the constructor of Bar super(); } public Foo(int code) { // do something with code this(); // no problem with this } }