Here I had describe Basic Introduction of java. History Of Java and Features Of Java etc. Basically java is a 3rd language.

2.  Java is a high-level programming language developed
by Sun Microsystems.
 It was originally designed for developing programs for
set-top boxes and handheld devices, but later became
a popular choice for creating web applications.
 It is the most popular programming language for
Android smartphone applications and is among the
most favored for edge device and internet of
things development.

3.  James Gosling, Mike Sheridan, and Patrick Naughton
initiated the Java language project in June 1991. The
small team of sun engineers called Green Team.
 Originally designed for small, embedded systems in
electronic appliances like set-top boxes.
 Firstly, it was called "Greentalk" by James Gosling and
file extension was .gt.
 After that, it was called Oak and was developed as a
part of the Green project.

4.  Object Oriented
 Compiled and Interpreted Language
 Simple
 Platform Independent
 Architectural Neutral
 Dynamic and Extensible
 Object Oriented

5. • Portable
• Multi Threading
• Distributed
• Networked
• More Secure Any Robust
• Secured
• High Performance

6.  class keyword is used to declare a class in java.
 Object − Objects have states and behaviors. Example: A dog has
states - color, name, breed as well as behavior such as wagging
their tail, barking, eating. An object is an instance of a class.
 static is a keyword, if we declare any method as static, it is known
as static method.

7.  void is the return type of the method, it means it
doesn't return any value.
 main represents startup of the program.
 String[] args is used for command line argument. We
will learn it later.
 System.out.println() is used print statement. We will
learn about the internal working of System.out.println
statement later.

8. Example : Creating hello java
class Simple
{
public static void main(String args[])
{
System.out.println("Hello Java");
}
}
Output:Hello Java