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BITS Pilani Hyderabad Campus
BITS Pilani Ms. Prafulla Kalapatapu
Computer Science & Information Systems Group
BITS-Pilani Hyderabad Campus
[email protected]
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BITS Pilani Hyderabad Campus
Object Oriented Programming Summer term Semester 2015
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
Course Assessment
Course Reference
Overview
Todays Agenda
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
Evaluation
Chamber Consultation hours
Chamber : B204
Tuesday : 4:00 PM to 5:00 PM
Email : [email protected]
Notices:
IPC Notice Board & Course Management site
Course Assessment
Component Mode Weightage
Test-1 Closed Book 20%
Test-2 Closed Book 20%
Lab Open Book 20%
Comprehensive Open+Closed
Book
40%
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
Text Books
T1: Object Oriented Design & Patterns, Cay Horstmann, John
Wiley &
Sons, 2004
Reference Books
R1: The complete Reference Java 2, 5th Edition, Herbert Schildt,
Tata
McGraw-Hill Edition
R2: JavaTMDesign Patterns - A Tutorial, James W. Cooper,
Addison-Wesley,
2000
R3: Core JAVA 2, Volume I Fundamentals (Seventh Edition), Cay
Horstmann and Gary Cornell, Prentice-Hall, 2005
Course Reference
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
What is Object Oriented Programming.
Properties of OOP.
History and OOP Features.
Encapsulation.
Overview
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
Object Oriented Programming
Object Oriented Programming
Data + Instructions
To perform some task
Consists
An Entity in real World
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
What an Object Consists?
What an Object Consists?
has
does
Properties
Behaviour / Operations
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
Few of them are
C++
JAVA
Small Talk
C#
Languages with object oriented properties
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
There are 4 properties
1. Encapsulation
2. Abstraction
3. Polymorphism
4. Inheritance
What are object oriented properties?
If any language satisfies these 4
properties, then we can call it as
object oriented programming
language.
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
1. Encapsulation : Combining data and code together at one
place.
2. Abstraction : hiding essential details and unhiding the
non-essential
details.
3. Polymorphism : One name acts as multiple forms based on
user
interaction.
4. Inheritance : Deriving one from an existing one.
Single line definition for each of above properties
Data + code
a
b
A
B
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
History of JAVA
1. First name was OAK
2. It was developed for Electronic devices.
JAVA
Renamed to JAVA
Because it got
registered by other
company
Mr. James Gosling Team
By
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
1. Simple:
[ follows C,C++ syntax rules]
- Pointers break security
- Memory allocation and deallocation problem
- So, pointers leads to confusion to a programmer
Features of JAVA [1]
Difficult concepts of C and C++ have been omitted in JAVA
Pointers Why eliminated from Java
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
2. Distributed:
Using JAVA, we can write program to send/receive information
from
one system to other in the network
Eg: Client- Server program
Features of JAVA [2]
Client Server
Request
Response
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
3. Robust:
There are 2 reasons to say it Robust
- Exception Handling
- Memory Management by JVM
Features of JAVA [3]
Strong
S1 S2 S3 . .
S25 . . .
S100
Exception
(An error at
runtime)
Abnormal Termination from program [loss of
data, user does not know what happened]
If Memory management
[allocation & deallocation]
not there, program may crash
at runtime [lack of memory]
In JAVA, JVM will take care of
that
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
4. System Independence:
JAVAs byte code is machine independent
Features of JAVA [4]
Java Comp
iler
------------------------
1.java 1.class
Consists of byte code
Runs on any OS
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
5. Portability:
If a program yields the same results on every machine , then
that program
is called portable.
- JAVA programs are portable
Features of JAVA [5]
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
6. Interpreted:
JAVA uses both compiler and interpreter for the execution
Features of JAVA [6]
A program that can analyze
and execute a program line
by line
A program that transforms
source code into machine
code in total.
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CS F213 OOP Summer Term 2015 Prafulla Kalapatapu BITS Pilani,
Hyderabad Campus
7. High Performance:
Because of the use of interpreter, java programs execution is
slow. To
overcome this problem, along with interpreter, they have
introduced JIT
Compiler [JUST IN TIME]
8. Multi-Threading:
Thread
Multi threading
Features of JAVA [7]
Represents individual process, to execute group of
statements simultaneously
Multiple processes running at a time.
