Java -Net Beans IDE- Introduction

-

INTRODUCTION JAVA



Java was invented by James Gosling, Patrick Naughton, Chris Warth, Ed Frank and Mike Sherdian in 1991. It took 18 months to develop the first working version. Java is a High Level language it was originally called Oak but was renamed Java in 1995. Java is an easy to learn, general purpose, concurrent, class based, object oriented programming language developed by Sun Microsystems Java is a platform independent language it means with Java you can write an application and it can run on many different operating systems (including Windows, Mac OS, Unix and Mainframes) without modifications to the code  


Features of Java

Ø  Compile and Interpreted

Ø  Platform Independent and portable

Ø  Object Oriented

Ø  Robust and Secure

Ø  Distributed

Ø  Familiar Simple and small

Ø  Multithreaded and Interactive

Ø  High Performance

Ø  Dynamic and extensible


Java Structure

§  Java is case sensitive

§  Whitespace, tabs and newline characters are ignored except when part of string constants.

§  Single line comments begin with //

§  Multiline comments begin with /* and end with */

§  Statements terminate in semicolon(;)


Swing Java

Swing is a set of classes that provides more powerful and flexible components than are possible with the AWT. In addition to the familiar components such as buttons, check boxes and labels Swing supplies several exciting additions, including tabbed panes, scroll panes, trees and tables. Even familiar such as button have more capabilities in Swing. For example a button may have  both an image and a text string associated with it. Also the image can be changed as the state of the button changes.

What is Net Bean?

The Net Bean IDE is open source and is written in the Java programming language. It provides the services common to creating desktop applications such as window and menu management and also the first IDE to fully support JDK features. 


JVM(Java Virtual Machine)



The imaginary computer whose machine language is Java byte-code. Also used to refer to computer programs that act as interpreters for programs written in bytecode; to run Java programs on your computer, you need a JVM.


Java Bean

A Java bean is a software component that has been designed to be reusable in a different environments. A bean may be visible/invisible  to an end user. One example of this is a button on a GUI.


IDE (Integrated Development Environment)

An IDE is a programming environment that has been packaged as an application program, consists of a code editor, palette window, properties window, Frame designer window, Project windows, output windows etc. Or 

A programming environment, where all the tools required for programming are available under one roof is called IDE


RAD (Rapid Application Development)
Rapid application development is a programming system that enables the programmers to quickly build working programs. In general, RAD systems provide a number of tools to help build graphical user interfaces. Two of the most popular RAD systems for windows are: Visual Basic and Delphi and for Java NetBeans and Borland Jbuilder

Comments

Post a Comment

Popular posts from this blog

Computer Networking

-
COMPUTER NETWORKING 1.          Define a network. Ans: A computer network is a system in which computers are connected to share information and resources. 2.          Write two advantages of networks. Ans: Advantages : i.          Data or information can be shared among the users. ii.         Fast communication can be achieved. iii)         Expensive hardware or software can be shared among the users. 3.          Write two disadvantages of networks. Disadvantages of networks: i)           Sophisticated Hardware and software technology is required. ii)          Expensive to install network. iii)       ...
Read more

Python-NumPy

-
1.        Write the command for the following: (a)   Print the NumPy version. (b)   Create a Null array X of size 10. (c)    Create a 1D Y array with values ranging from 10 to 49 2.        Create an array starting from 0 with an interval of 2 till 20. 3.        Convert a 1D array to a 2D array with 2 rows 4.        Create 3 X 3 identity matrix 5.        Create a 3 X 3 matrix with values ranging from 0 to 8 6.        Create a 3 X 3 NumPy array of all True’s 7.        Create a 1D array of length 10 & all elements initialized with value 7. 8.        Create a 2D array of 4 rows and 5 columns and all elements initialized with value 9. 9.        Write a NumPy program to test w...
Read more

MySQL Simple Queries

-
MYSQL INTRODUCTION TO MySQL MySQL is a relational database management system(RDBMS). MySQL stands for “My Structured Query Language” it is also pronounced as My SEQuel. MySQL is a freely available open source RDBMS that uses SQL. MySQL is a fast, easy-to-use RDBMS used for small and big business applications. MySQL is developed, marketed, and supported by a Swedish Company MySQL AB. It is also used in many high-profile, large scale world wide web products including Wikipedia, Google and Facebook Some of the key features of MySQL are: Ø   Cost: MySQL is Open source, and is available free. Ø   Trusted: MySql is used by some of the most important and prestigious organizations and sites, all of whom entrust it with their critical data Ø   MySQL is released under an open-source license so it is customizable. It requires no payment for its usage Ø   MySQL is a platform independent application which works on many operating sy...
Read more