I am trying to define an abstract class implementing Comparable. When I define the class with following definition:
public abstract class MyClass implements Comparable <MyClass>
subclasses have to implement compareTo(MyClass object). Instead, I want every subclass to implement compareTo(SubClass object), accepting an object of its own type. When I try to define the abstract class with something like:
public abstract class MyClass implements Comparable <? extends MyClass>
It complains that "A supertype may not specify any wildcard."
Is there a solution?