The document provides an overview of Java programming including: - A brief history of Java and its evolution since its initial release in 1995. - An explanation that Java is both an object-oriented language and a robust platform with its own runtime environment and APIs. - Descriptions of Java's key features like portability, security, multi-threading, and being platform independent. - Examples of Java's widespread use in areas like mobile technology, web applications, and enterprise applications.

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OOPS With Java
- Java Language Overview

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Mousum Dutta
Chief Data Scientist, Spotle.ai
IIT Kharagpur
Instructors
Sk Mamtajuddin
Head of Technology,
Spotle.ai
2

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OOPS With Java
3
Java is a good example – in fact
a great example of an Object
Oriented Language with
advanced and simplified
features. Java is free to
access and can run on all
platforms. Like your coffee, java
is strong, flexible; powering
large enterprise applications
around the world.

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Java – A Bit Of History
4
Java was developed by James
Gosling at Sun
Microsystems (now acquired by
Oracle) and released in 1995.
Java has undergone a lot of
evolution since JDK 1.0 released
in 1996 . The latest java library
release is Java SE 12 (released
in March 2019).

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Java Is Both A Language And A
Platform
Java is a secure, robust,
object oriented
language.
Java has its own run-time
environment and APIs
also making it a robust
platform.
5

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Java Features
6
Java
Portable
Secure
Multi-threaded
Platform -
Independent
Object-Oriented
Distributed
Java Is
Awesome!

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Advantage Java
7
✓Is comparatively easy to learn, code, compile and debug
✓Object-oriented providing higher reusability and
modularisation
✓Is platform independent allowing java programs to be run
on any platform or Operating System
✓Provides robust security features. Java considers
security as part of its design. The Java language, compiler,
interpreter, and runtime environment were each developed
with security in mind
✓Supports distributed computing through in-built network
features
✓Multi-threaded to allow concurrent processing
✓Garbage collection is built into the program, allowing
unused memory to be reclaimed.

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Key Application Areas
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Robotics Mobile Tech
Web
Applications
Embedded
Systems
Enterprise
Applications
3 Billion Devices Including
the popular Android OS
run on Java!

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Java Platforms
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J2SE
The Core
Java
Functionality
J2EE
For Network
Applications
J2ME
Java For Mobile
Applications
JAVAFX
For
Building
Rich GUI
Java
Platforms

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What Is New In Java 12?
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Make the coding process easier by extending the switch
statement to be used as statement or expression
Boosts the JDK (Java Development Kit) build process for
the 64 bit platform
Reduces garbage collection time by running evacuation
work in threads
Upgrades the garbage collector to instantly return
unused Java heap memory to the OS. Makes the
termination of garbage collector more efficient.

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Careers In Java

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How many Java Developers In The
World?
Oracle says it's
9,000,000. Wikipedia
claims it's 10,000,000.
And the guys from
NumberOf.net seem to
be the most precise –
they know that there are
exactly 9,007,346 Java
developers out there.
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Src: plumbr.io

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It Pays To Know Java
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Average pay for
a Java Software Developer /
Programmer (at entry
level) is Rs 4,34,304 per
year
Average pay for a Senior
Java Architect is
Rs 22,01,562
Source: Payscale.com

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Typical Career Path
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Developer
Senior
Developer
Software
Designer
Solution
Architect
J2EE
Development
Core Java
Development
Android
Development
Where Can You Start?How Do You Progress?

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Some Typical Interview Questions
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Which is the latest version of Java in use?
What new features are included in the
latest Java release?
What are the types of Java Platform?
What are the key advantages of Java?
How does Java ensure better memory
utilization?
How does Java provide better
performance?