// generics/HijackedInterface.java // (c)2017 MindView LLC: see Copyright.txt // We make no guarantees that this code is fit for any purpose. // Visit http://OnJava8.com for more book information. // {WillNotCompile} class Cat extends ComparablePet implements Comparable{ // error: Comparable cannot be inherited with // different arguments: and // class Cat // ^ // 1 error public int compareTo(Cat arg) { return 0; } }