Object Oriented Technologies

Object Oriented Technologies,[object Object],Tushar B Kute,[object Object],Assistant Professor in I.T.,[object Object],Sandip Institute of Technology & Research Centre, Nashik,[object Object]

Programming Paradigms,[object Object],Procedure Oriented ,[object Object],Object Oriented,[object Object]

3R,[object Object],Readability,[object Object],Reusability,[object Object],Reliability,[object Object]

Procedure Oriented Programming,[object Object],Procedures / Functions are used to form a modular program.,[object Object],For example:,[object Object],C,[object Object],Pascal,[object Object],Cobol,[object Object]

Example: C Program,[object Object],#include<stdio.h>,[object Object],int main( ),[object Object],{,[object Object],. . . . . . ,[object Object],},[object Object],void display( ),[object Object],{,[object Object],. . . . . .,[object Object],},[object Object],intaddme(int a, int b),[object Object],{,[object Object],. . . . . .,[object Object],},[object Object]

Object Oriented Techniques,[object Object],ADT,[object Object],Polymorphism,[object Object],Inheritance,[object Object]

Abstract Data Type,[object Object],Denotes the essential characteristics of an object that distinguish it from all other kinds of things.,[object Object],ADT = data representation + its operations,[object Object],Information hiding,[object Object],Encapsulation,[object Object]

Abstract Data Type,[object Object],state, implemented by attributes,[object Object],behaviour, implemented by operation,[object Object],identity,[object Object]

Abstract Data Type,[object Object],class,[object Object],object,[object Object],instance,[object Object],encapsulation,[object Object],method,[object Object],message,[object Object],protocol,[object Object]

Abstract Data Type,[object Object],Class A class is a blueprint for creating objects. It is like a data type in traditional language.,[object Object],Instance An instance is a particular element of a class. It is like a variable in traditional language.,[object Object]

Polymorphism ,[object Object],Monomorphismevery values & variables is interpreted to be of one and only one type.,[object Object],Polymorphism some variables may have more than one type.,[object Object]

Polymorphism ,[object Object],Binding,[object Object],static or early bindingaddInt(x, y)addFloat(x, y),[object Object],dynamic or lateadd(x, y),[object Object]

Polymorphism ,[object Object],universal polymorphism1. parametric (ex) generic function2. inclusion (ex) subtyping, inheritance mechanism,[object Object],ad hoc. polymorphism1. overloading (ex) +2. coercion (ex) 3 + 4.5,[object Object]

Example:,[object Object],int add (int a, int b),[object Object],float add (float a, int b),[object Object],float add (float a, float b),[object Object],int add (int a, int b, int c),[object Object],float add (int a, float b, int c),[object Object]

Inheritance ,[object Object],vehicle,[object Object],land,[object Object],vehicle,[object Object],water,[object Object],vehicle,[object Object],air,[object Object],vehicle,[object Object],car,[object Object],truck,[object Object],canoe,[object Object],submarine,[object Object],jet,[object Object],rocket,[object Object],18-wheeler,[object Object],pickup,[object Object]

Inheritance ,[object Object],Kind-of,[object Object],Part-of,[object Object]

Inheritance ,[object Object],A room is a part of a house.A kitchen is a kind of room.,[object Object],A boat is a part of a fleet.A cruiser is a kind of a boat.,[object Object],A child is a part of a family.A son is a kind of a child.,[object Object],A word is a part of a sentence.A noun is a kind of a word.,[object Object]

Problem Solving using OOP,[object Object],Behaviour of a system (otherwise the state of the system) is exposed through the change of some characteristics.,[object Object],paint new color,[object Object],Property name : surface-color,[object Object],Property value ; green,[object Object],Property name : surface-color,[object Object],Property value ; red,[object Object],The force that change surface-color is PAINT action,[object Object]

Class ,[object Object],Class Describes an object, description includes properties (attributes) and methods the object can perform,[object Object],CD_Drive {,[object Object],boolean _latchState,[object Object],boolean _contentState,[object Object],openLatch(),[object Object],closeLatch(),[object Object], insert(),[object Object], eject(),[object Object],},[object Object],Object,[object Object],Each object consume its own space (Identity),[object Object],Description about CD-Driver,[object Object]

Abstraction ,[object Object],Class wraps necessary details of the object and expose few through interface,[object Object],Interface or method is communication point.,[object Object],Interface or method can be invoked on an object.,[object Object],CD_Drivelg,[object Object],CD_Drivesegate,[object Object],lg.openLatch();,[object Object]

Object Oriented Languages,[object Object],Objects are supported.,[object Object],Objects are organized into classes.,[object Object],Classes are organized into hierarchies using inheritance.,[object Object],An object communicates by sending messages to invoke the operations of other objects,[object Object],Objects of varying types respond to the same message differently using polymorphism.,[object Object]

Object Oriented Programming Languages ,[object Object],First object-oriented language, Simula at 1967.,[object Object],Proved by Smalltalk at 1976. ,[object Object],C++, Effiel, Common Lisp, Object-Pascal, ... appeared at late 1970s. ,[object Object],Object-oriented programming environments matured at 1980s. ,[object Object],User interface (1980s) : WIMP, Dynabook, Apple Lisa and Macintosh, Window systems..,[object Object]

Object Oriented Programming Languages ,[object Object],Java appeared at 1995,[object Object],C# by Microsoft at 2001,[object Object]

Object Oriented Languages,[object Object],Ada,[object Object],CLU,[object Object],C++,[object Object],Modula-2,[object Object],Objective-C,[object Object],Smalltalk,[object Object],CLOS (Lisp),[object Object],Java ,[object Object],C#,[object Object]

Object Oriented Languages,[object Object],C++,[object Object],AT&Tdesigned by BjarneStroustrup,[object Object],ANSI-C compatible,[object Object],OOP ,[object Object]

Object Oriented Languages,[object Object],JAVA,[object Object],Designed at SUNby James Gosling and team,[object Object],C/C++syntax compatible,[object Object],True OOP,[object Object],ByteCode,[object Object],JVM,[object Object]

Industrial Importance of OOT,[object Object],Java ,[object Object],J2SE,[object Object],J2EE,[object Object],J2ME,[object Object],Microsoft Visual Studio.net,[object Object],PHP,[object Object]

Market Share in I.T.,[object Object],62 percent technologies are based on Java,[object Object],22 percent are on .net,[object Object],16 percent are on others… ,[object Object]

Thank You,[object Object],tbkute@gmail.com,[object Object]

Object Oriented Technologies

Object Oriented Technologies

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Object Oriented Technologies