Objects, classes and more

class: A class is a blueprint or prototype from which objects are created. A set of objects.
object: An instance of a class.
member: Attributes or methods that belong to the class or object. They are directly contained within the class block.
attributes: Global variables that are the characteristics of the class.
methods: Behaviors or actions of the class.
state: The specific values of an object. (It's attribute values.)
visibility: Applied to class members, visibility defines the public scope of the member (public or private).
encapsulation: The combining of attributes and behaviors into a single package that protect that class of objects and their data.
instantiation: The act of creating a new object from a class.
qualified name: A member name that is "qualified" by an object name or a class name.
accessor methods: Methods which access data within an object but do not change the object's state.
mutator methods: Methods which access data within an object and change the state of one or more attributes.

private: The class member is visible only to its own class methods.
public: The class member is visible to any class's methods that chooses to use it.
this: A java reserved word which refers to the calling object.

Class notes