Sep 22, 2010 · super() is a special use of the super keyword where you call a parameterless parent constructor. In general, the super keyword can be used to call overridden methods, …

In fact, multiple inheritance is the only case where super() is of any use. I would not recommend using it with classes using linear inheritance, where it's just useless overhead.

As for chaining super::super, as I mentionned in the question, I have still to find an interesting use to that. For now, I only see it as a hack, but it was worth mentioning, if only for the differences …

Sep 2, 2009 · The first (<? super E>) says that it's "some type which is an ancestor (superclass) of E"; the second (<? extends E>) says that it's "some type which is a subclass of E". (In both …

I'm currently learning about class inheritance in my Java course and I don't understand when to use the super() call? Edit: I found this example of code where super.variable is used: class A { ...

Aug 14, 2012 · 103 You can add super privilege using phpmyadmin: Go to PHPMYADMIN > privileges > Edit User > Under Administrator tab Click SUPER. > Go If you want to do it …

Now I want to test the childRunner() method of ChildClass and since this method internally calls the super class method, i need some help/piece of code on how to mock the run() method …

Apr 20, 2015 · The only workaround I found is to declare all members final yourself and use the @Data annotation instead. Those subclasses need to be annotated by …

Jul 9, 2018 · I wrote the following code. When I try to run it as at the end of the file I get this stacktrace: AttributeError: 'super' object has no attribute do_something class Parent: def …

What is the difference between List<? super T> and List<? extends T> ? I used to use List<? extends T>, but it does not allow me to add elements to it list.add (e), whereas the Li...