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Java Technology

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Core Java Tutorial or Java Technology is a most used robust technology.In U.S 8 out of 10 computers run on java. Now we start learning java from basics like what is core java, where it is applied, what type of applications are developed in java and why we use java.

What is Java

In general terms, java is Island in Indonesia and Indonesia is popular for its coffee that is the reason behind java logo is of cup of coffee . Technically , Java is a programming language and as well as a platform. Java is object-oriented, high level, robust and secured programming language.Many Programming language have implement OOPs and other features but java security and extensibility make it different from other programming languages. Platform means : Any hardware or software environment on which a program runs, is known as a platform. Java provide, its own run time environment i.e JRE and API, that 's why it is called a platform.

Java Example

Let's have our first example.The first example is a basic one ,a welcome program.

class Simple
{
public static void main(String args[])
{
System.out.println("Welcome to the world of Java...");
}
}

way for compile and run program

javac Simple.java
java Simple

Output:

Welcome to the world of java...

Application of java or Uses of java

According to Sun (now acquired by Oracle),more then 5 billion devices run on java. There are many devices that run on java. Some of them are as follows:


1.Many Desktop based Applications such as media players, antiviruses ,customized user based app etc.

2.Web or Intenet Applications such as irctc.co.in ,IBM Developerworks etc.

3.Many banking applications like punjab national bank etc.

4.Embedded System,Smart Card

5.Robotics and Many embedded Technologies like Lift etc.

6. Many Games are also developed in java etc.