WHAT IS JAVA ?

Java is a programming language and a platform .
The java language is the language in which the java applications (including Applets, Servlets and JavaBeans components) are written.
When a java program is compiled then it is converted to the byte codes that are architectural neutral and portable to machine language of a CPU Architecture known as Java Virtual Machine(JVM).The JVM can be directly implemented in hardware , but it is normally implemented in form of a software program that interprets and executes the byte codes.

Platform: Any hardware or software environment in which a program runs, is known as a platform.
The java platform is separated from both the Java language and Java VM. The java platform is the predefined group of java classes that exists on each Java installation. These classes are approachable for use by all Java programs. The java platform is sometimes related to as the (JRE)
Java Runtime Environment or the core Java APIs (Application Programming Interfaces).

 

FEATURES OF JAVA

1.Compiled and Interpreter

2.Platform independent

3.Object-oriented

4.Robust

5.Secure

6.Simple Small and Familiar

7.Multithreaded and Interactive

8.High Performance

 

WHERE IT IS USED ?

There are many devices where java is currently used. Some of them are as follows:

1.Desktop Applications such as acrobat reader, media player, antivirus etc.

2.Web Applications such as irctc.co.in, javatpoint.com etc.

3.Mobile

4.Enterprise Application such as banking applications.

5.Games

6.Robotics

7.Smart Card etc.