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Overriding Methods (where child class provides method with same signature as method in parent)
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To override a method, a subclass of the class that originally declared the method must declare a method with the same name, return type (or a subclass of that return type), and same parameter list.
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When the method is invoked on an instance of the subclass, the new method is called rather than the original method.
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The overridden method can be invoked using the super variable.
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Super can be used to refer to instance variables in the superclass as well.
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