Polymorphism and Casting

joannazhang13
Flashcards by joannazhang13, updated more than 1 year ago
joannazhang13
Created by joannazhang13 almost 6 years ago
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Flashcards on polymorphism and casting

Resource summary

Question Answer
Polymorphism Mechanism of selecting the appropriate method for a particular object in a class hierarchy
Selection of the correct method occurs: During the run of the program
Dynamic binding Compiler decides which instance method to call when the program is running
Static binding The compiler decides which method to run at compile time.
Downcasting Casting a superclass to a subclass type
ClassCastException Thrown when there's an attempt to cast an object to a class of which it's not an instance
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