Objectoriented programming oop uses objects to model realworld objects. Pdf object oriented programming in coldfusion by matt gifford free downlaod publisher. Objectoriented programming oop consist of some important concepts namely encapsulation, polymorphism, inheritance and abstraction. The object concept an object is an encapsulation of data. The language has gained widespread popularity as the internet has boomed, although its market penetration has been limited by its inefficiency. Object oriented technology is both an evolution and a revolution as evolution it is the logical descendant of hll, procedures, libraries, structured programming, and abstract data types. Objectoriented programming lecture notes download b. Pythonbookspython 3 objectoriented programming second. Member function preceded by keyword virtual in base class and overridden in derived class. Pdf object oriented programming principles francis mk. An object has identity a unique reference, state, also called characteristics behavior an object is an instance of an abstract data type. Object innovations course 4101 student guide revision 4. If object of base class invokes virtual function, then copy of base class is invoked and if derived class object invokes it, then copy of derived class is invoked.