Object Oriented
Programming in Java
Hi friends, really sorry for not for posting anything for
long time (around 2 months). So today we gonna have simple discussion on object
oriented programming principles J
1.
Inheritance
2.
Encapsulation
3.
Polymorphism
4.
Abstraction
In object oriented programming we learn that class is a blueprint
that describe the behavior and the state of an object. Let’s clarify what does
it mean by blueprint and how it applicable in this context.
Here the attributes of the phone shows the
state of the phone & functions (in java methods) express the behavior of
the phone
Here you can see the
relationship between class and its objects.
are objects of Phone Class.If these code segments are not clear I will post both the
github repo link & slideshare link where you can download the project &
the presentation.
As we discuss earlier here you can see the four main features
of object oriented programming. Let’s discuss each of these feature separately with
examples.
In programming we can define encapsulation is kind of blackbox
.Before learning about Encapsulation it will be very useful if you can Watch this video
Communicating with encapsulated area is only possible through
messages (getter & setter methods)
Word CUT get different meanings according to
the place it use.
- For a medical surgeon “cut” leads to do an operation.
- For an actor “cut” means to stop his /her acting
Also same way here we can ask for a “phone“ to perform different actions 
