1. Introduction to Object-Oriented Programming
Bayu Priyambadha, S.Kom

2. OOP Vs. Procedural Commonly used programming methodologies are :
Procedural Programming
Object-Oriented Programming

3. Procedural Programming (1)
Involves dividing a large program into a set of subprocedures or subprograms that perform specific tasks.
Module consists of single or multiple procedures.
Procedures are also known as functions, routines, subroutines, or methods in various programming languages.
In a program following procedural methodology, each step of a subprogram is linked to the previous step.
Most of the data is shared as global that can be accessed from anywhere within the program.

4. Procedural Programming (2)

5. Object-Oriented Programming (1)
The two most important concepts in object-oriented programming are the class and the object
Object is a thing
Object is tangible and intangible that we can imagine
Object-Oriented Programming consist of interacting objects

6. Object-Oriented Programming (2)
Class is template that the computer used to create object
Object is called an instance of a class
Objects is belongs to a class

7. OOP in the Case of Banking
There are many objects, such as :
Account
Customer
Transaction
ATM, etc.
< class name >
< object name >
< class name>

8. Shows an instance-of relationship
Classes and Objects (1)
< Account>
Shows an instance-of relationship
Jojo
Jeje
Jaja
Account
Account
Account

9. Classes and Objects (2)
Every object comprised of data and operations (methods)
< class name >
< object name >
< class name >

10. Messages and Methods Object -> accomplish tasks (run the method)
Send a message to the object
Object must understand the message
Method :
Return value
No return value
Jeje
Customer
argument
deposit
deposit

11. Class and Instance Data Values (1)
Data Values for instance class (object)
Class Data Values
Data Values for class
< object name >
< class name>
Instance Data Values
< Customer >
Class Data Values

12. Class and Instance Data Values (2)
< Account >
Minimum Balance
50.000
Jojo
Jeje
Jaja
Account
Current balance
Account
Current balance
Account
Current balance

13. Advantages of Object-Oriented Programming
simplicity
modularity
modifiability
extensibility
maintainability
re-usability

14. Thanks...