The call chain for the methods can be intercepted and functionality injected. Super() lets you avoid referring to the base class explicitly, which can be nice But the main advantage comes with multiple inheritance, where all sorts of fun stuff can happen. 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. 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, access hidden fields or invoke a superclass's constructor. Super e>) says that it's some type which is an ancestor (superclass) of e Extends e>) says that it's some type which is a subclass of e (in both cases e itself is okay.) so the constructor uses the Extends e form so it guarantees that when it fetches values from the collection, they will all be e or some subclass (i.e As for chaining super::super, as i mentionned in the question, i have still to find an interesting use to that
I'm currently learning about class inheritance in my java course and i don't understand when to use the super() call I found this example of code where super.variable is used How to call super ().super () in overridden method (grandparent method) [duplicate] asked 13 years, 2 months ago modified 8 years, 9 months ago viewed 46k times I wrote the following code When i try to run it as at the end of the file i get this stacktrace 'super' object has no attribute do_something class parent
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 which is present in superclass. How to add super privileges to mysql database Asked 13 years, 2 months ago modified 1 year, 3 months ago viewed 409k times The automatic insertion of super () by the compiler allows this Enforcing super to appear first, enforces that constructor bodies are executed in the correct order which would be If you add any other column/attribute to a primary key then it become a super key, like employeeid + fullname is a super key
