This presentation provides an overview of the Java programming language. It discusses what Java is, where it is used, its features, how Java programs are translated and run on the Java Virtual Machine. It also covers Java concepts like object-oriented programming, data types in Java, garbage collection, and the development phases of a Java program. Finally, it proposes a project idea of developing an intranet mailing system and concludes by thanking the audience and asking if there are any questions.

1. PRESENTATION
ON
CORE JAVA
BY
MAHIR JAIN

2. CONTENT
• What is Java ?
• Where is Java used ?
• Features of Java
• Java Program Translation
• Java Virtual Machine
• Java system overview
• Java Program-Development phase
• Advantage of java
• Disadvantage of java
• Project

3. WHAT IS JAVA ?
 Java is Object Oriented Programming language as
well as Plateform.
 Java was developed by a team led by James Gosling
at Sun Microsystems.
 Java is a first programming language which provide
the concept of writing programs that can be
executed using the web.

4. WHERE IS JAVA USED ?
According to the Sun , 3 billion devices run java.
There are many devices where Java is currently used.
 Desktop Applications - Acrobat reader, Media player,
Antiviruses etc.
 Web Applications - irctc.co.in , javatpoint.com etc.
 Enterprise Application – Banking Application, Business
Application.
 Mobile.
 Embedded System.
 Games.
 Robotics.

5. FEATURES OF JAVA
• Java is Simple.
• Java is Object Oriented
• Java is Distributed
• Java is Architecture Neutral
• Java is Robust
• Java is Interpreted and Compiled
• Java is Secure
• Java is Portable
• Java is Multi-Threaded

6. JAVA PROGRAM TRANSLATION
Hello.java javac Hello.class
Interpreter for WinXP
Interpreter for Mac
Interpreter for Unix
Source Program Java Compiler Java Bytecode

7. JAVA VIRTUAL MACHINE
 Java virtual machine is the like usual computer
which translate high level language into machine
language.
 Just like that Java virtual machine also translate
Bytecode into machine language.
 JVM are available for many hardware and software
Plateform.

8. WHAT IS OOP ?
 Object-oriented programming is a method of
implementation.
 A language in which everything represent in the
form of Object is called Object Oriented
Programming Language.
 It not only makes the program less complex but
also makes the software reuse feasible and possible.
 Java is not truly Object Oriented Programing
Language

9. CONCEPTS OF OOP
• Object
• Class
• Encapsulation
• Inheritance
• Polymorphism
• Abstraction

10. JAVA SYSTEM OVERVIEW
Java Application
Java Programming Language
Java Native
Interface
Java Class Library
Operating System
Class
Loader
Verifier Execution
Java Virtual Machine

11. JAVA PROGRAM-DEVELOPMENT PHASES

12. DATA TYPES IN JAVA

13. GARBAGE COLLECTION
 Garbage collection is the mechanism that De allocate
the memory of an object when it is no longer referenced
by a variable.
 In C++, the memory of an Object is released by use of
delete operator.
 Java virtual machine determines when to free up the
memory of an object.

14. ADVANTAGES OF JAVA
 Java is simple language.
 Java does not support POINTERS.
 Java is first language in which programs can be
executed using web.
 Write Once Run Anywhere (WORA).

15. DISADVANTAGES OF JAVA
 Slow Performance.
 No support for Low level programming.
 Poor features in Java.
 No control over Garbage Collection.

16. PROJECT
INTRANET MAILING SYSTEM
• Users can send information and query to each
other.
• Provides the facility to maintain profile and inbox
of each employee separately.
• Develop a communication interface for the
organization.

17. THANK
YOU

18. Any Query
?