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Classes

Represent all objects of a kind (example: “a car”, “ a monster”)

Objects

( instance)

Represent specific items from the real world, or from some problem domain

(example: “the red car out there in the parking lot”)

An object is an instance of a class – arbitrarily instances can be created

Attributes

Objects are described by attributes stored in fields

Methods

Objects have “operations” which can be invoked

Parameters

Methods may have parameters to pass additional information needed to

execute

Return values

Methods may return values as a result of the operation