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Presentation ON: Core Java

This presentation provides an overview of the core concepts of Java, including what Java is, where it is used, its features, how Java programs are translated and executed, and the Java development process. Key points covered include that Java is an object-oriented programming language created at Sun Microsystems, it is used widely in applications from desktop to mobile to enterprise systems, its features include being simple, object-oriented, distributed, architecture neutral and secure. The presentation also explains Java concepts like the Java virtual machine, bytecode, object-oriented programming principles, and the Java development lifecycle. Advantages and disadvantages of Java are listed as well.

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294 views18 pages

Presentation ON: Core Java

This presentation provides an overview of the core concepts of Java, including what Java is, where it is used, its features, how Java programs are translated and executed, and the Java development process. Key points covered include that Java is an object-oriented programming language created at Sun Microsystems, it is used widely in applications from desktop to mobile to enterprise systems, its features include being simple, object-oriented, distributed, architecture neutral and secure. The presentation also explains Java concepts like the Java virtual machine, bytecode, object-oriented programming principles, and the Java development lifecycle. Advantages and disadvantages of Java are listed as well.

Uploaded by

anon_253910224
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
You are on page 1/ 18

PRESENTATION

ON
CORE JAVA
BY
MAHIR JAIN
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
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.
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.
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
JAVA PROGRAM TRANSLATION
Interpreter for WinXP

Hello.java javac Interpreter for Mac


Hello.class

Source Program Java Compiler Java Bytecode

Interpreter for Unix


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.
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
CONCEPTS OF OOP
• Object
• Class
• Encapsulation
• Inheritance
• Polymorphism
• Abstraction
JAVA SYSTEM OVERVIEW
Java Application

Java Programming Language

Java Class Library


Java Native
Interface
Java Virtual Machine

Class Verifier Execution


Loader

Operating System
JAVA PROGRAM-DEVELOPMENT PHASES
DATA TYPES IN JAVA
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.
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).


DISADVANTAGES OF JAVA
 Slow Performance.

 No support for Low level programming.

 Poor features in Java.

 No control over Garbage Collection.


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.
THANK
YOU
Any Query
?

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