oop - what its mean by class, object, instance, attribute in object oriented programing ?

Question

i have learned class is a blueprint of structurally identical items, and the items created using class are called instances. please let me know what are the difference between class, object, instance and attribute in object oriented programming concept. is the object, instance, attribute same?

http://en.wikipedia.org/wiki/Class_(computer_programming)

Answer 1

Typically they are used like so:

• class - blueprint for creating object instances; defines properties and methods
• object - synonymous with instance usually (sometimes improperly equated with class)
• instance - an actual manifestation of a class; the class defines what properties and methods the instance has while the instance holds the values of the object attributes
• attribute - typically synonymous with "property" (an object member whose value can be set), but in some dynamic languages this can also include "methods" (an object member which can be called)