Java

Java Programming Language 

Java is one of the most popular and widely used programming languages

• Java has been one of the popular programming languages for many years.
• Java is OOPS based programming language.
• Java is not considered as complete object-oriented because it supports primitive data types.
• Java programming language has various categories like J2SE, J2EE, J2ME.
• Java is used to develop the Desktop application, Web application, Moblie application, client-server, enterprise application,
  according to the sun microsystem, more than 3 billion devices run on java.
• Java code is firstly compiled and generate byte code (byte code are machine-independent)

Java is a Programming Language and a platform.
Java is a high level, robust, object-oriented, and very secure programming language.

why java is a Platform?
Any hardware or software environment in which a program runs is known as a platform. Since Java has a run time environment (JRE) and API, that's why it's called platform.

Let's have a look at a very first java Programme,

class JavaOneWorld
  {
      public static void main(String []s)
        {
           System.out.println("Hello javaoneworld");
         } 
  }

Next applications of java.

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Why java is not fully object-oriented?