JAVAVidya Topa Institute of Professional Studies.

History of Java

Research project : ”Green team”

“The father of Java”: James Gosling

Designed by Sun Micro System Inc(1991)

JAVA SUBPARTS

JAVA: J2SE J2EE J2ME JAVA CARD

Components of Java

JVM JRE Garbage Collection Java Tool Interface

Features of Java

Platform independent

Simple

Secure

Easy to use and write

Robust code: early error checking

Multithreaded

Network programming

Execution of Java file

What Java

Java is a general-purpose,  concurrent,  class-based,  object-oriented 

computer programming language   "write once, run anywhere" (WORA)

Cnt……. Java is an Object Oriented Language. As a

language that has the Object Oriented feature Java supports the following fundamental concepts:

Polymorphism Inheritance Encapsulation Abstraction Classes Objects Instance Method

What Class & Object

A class is nothing but a blueprint or a template for creating different objects which defines its properties and behaviors.

Object => instance of a class

State and behaviour

Identity

Responsibility

Cnt.. Writing Operations and methods stored in a

single class.This is Called Encapsulation Inheritance: The New Class is Existing from

Old Class,i.e SubClass is Existing from Super Class.

Polymorphisam: Single Form behaving diffreantly in diffreant Situations.

Abstraction:-Hidding non-essential features and showing the essential features (or) Hidding unnecessary data from the users details,is called abstraction. Real Time example:TV Remote Button

How to install & write java program

Practical implementaion

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