Java Standard Edition

JAVA INTRODUCTION

  • Java is both a programming language and a platform.
  • The Java platform / runtime environment is platform independent in the sense that the same libraries (images, networking, File IO etc.) are available and work in the same way on all platforms.
    Platform :It is basically the hardware or software environment in which program runs. Java has its own Runtime Environment (JRE) and API, and so it is called a platform.
    API(application programming interface): API document is a .html file that contains description of all features of a software,a product,or a technology.API document is helpful for the user to understand how to use the software or technology.To create an API document,we should use a special compiler called javadoc compiler.
  • Java is a piece of code. It is a 100% object oriented programming language (OOP'S). Java is a open source software(free of cost).

HISTORY OF JAVA

James Gosling
James Gosling
  • James Gosling, Mike Sheridan, and Patrick Naughton initiated the java language project in January 1991.
  • Originally designed for small, embedded systems in electronic appliances like set-top boxes.
  • This language was initially called "Oak", as it was already registered by some other company,later it was changed to java. Java is just a name not an acronym.
  • Java was originally developed by James Gosling at Sun Micro Systems (which is now subsidiary of oracle corporation) and released in 1995.
  • JDK 1.0 released in (January 23, 1996).

JAVA VERSION HISTORY

History of java released as follows:


Java Graph
Java Release History and New Concept

TYPES OF JAVA APPLICATIONS:

Java various platforms are

Java Tool Kit
Java Tool Kit
There are mainly four types of java applications. They are namely
  1. Standalone Application:
    An application that we install on every machine such as media player, antivirus etc. This is also called as "Desktop Application" .
  2. Web Application:
    An Application that runs on the server side and creates dynamic pages is called web Application. Example Servlets, Jsp, Struts etc.
  3. Enterprise Application:
    An application that is distributed in nature such as banking applications etc.
  4. Mobile Application:
    An application that is created for the mobiles is called Mobile Application. Presently Android and java ME is used for creating mobile applications.

FEATURES OF JAVA:

  1. Simple ,Small & familiar
  2. Object Oriented
  3. Distributed
  4. Robust(means strong it means they do not crash easily like c or c++
  5. Secure
  6. Platform independent
  7. Portable(means it gives same result on every machine)
  8. Compiled and Interrupted
  9. High performance
  10. Multithreading and interactive
  11. Dynamic and Extensible

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