What is Java ?
Small history of Java.
Different versions of Java.
Types of Java Applications.

What is Java?
Java is a programming language and also a platform.
What is a platform ?
An environment (software or hardware) in which program runs is called a platform.
Java has its own runtime environment(JRE) so it is called a platform.

History of Java :
Green Team (Java Team Members)
James Gosling, Mike Sheridan and Patrick Naughton (Green Team Members) , 1991 JUNE
The first name of Java was ‘Green talk’ and file extension was .gt
Later named as Oak.
Finally named as Java.

Types of Java Applications :
Mainly we can create 4 types of applications using Java language :
Web Application.
Standalone Application.
Enterprise Application.
Mobile Application.