COSC 111 Lecture Notes - Lecture 25: Reference Class Problem, Instance Variable, Local Variable
4 Dec 2018
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Document Summary
Polymorphism (this will not be discussed in this course) This = reference than an object can use to refer to itself. A class member can be referenced from anywhere within the class. A constructor can only be invoked within another constructor public class circle extends shape{ private int radius; public circle() { this(10); public circle(int radius) { this. radius = radius; Super = refers to the superclass of the class where this super is in can reference class members in the superclass. A constructor in the class can invoke another constructor in the superclass. = if a subclass extends a class, all the constructors of the class is inherited to the subclass. = when passing arguments to methods, the what"s going in to the method"s parameter is a copy of the variable that the method called. = a value is passed to method"s parameter, so there"s now two objects.
