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class.md

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  • Class -> Template for an object
    Object -> an instance of a class
    A class creates a new data type that can be used to create objects
    Class is a logical construct. An object has physical reality.

  • Objects are characterized by three essential properties: state, identity, and behavior.
    State -> value from its data type
    identity -> distinguishes one object from another, It is useful to think of an object’s identity as the place where its value is stored in memory.
    behavior -> the effect of data-type operations

  • Dot operator(.) -> links the name of the object with the name of an instance variable