When do you need to explicitly call a superclass constructor?

Question

So say I have a subclass that extends a superclass. In what scenarios do I need to explicitly type super() to get the superclass constructor to run?

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Answer 1

The super() method is always called in constructors of sub-classes, even if it is not explicitly written in code.

The only time you need to write it, is if there are several super(...) methods in the super-class with different initialization parameters.