The basic syntax of a Java program is as follows:

public class ClassName {
    public static void main(String[] args) {
        // code you want to execute
    }
}

Note: The class name should be exactly the same as the file name.

How JAVA Code gets Executed :

1) Compilation

SOURCE CODE ———> JAVA COMPILER ———> BYTE CODE

(*.java) (**.class)

2) Execution

BYTE CODE ———> JAVA VIRTUAL MACHINE ———> NATIVE CODE

(*.class) (Windows, Mac, Linux)

A Few Things to Know About Java

• JAVA was developed by James Gosling in 1995 at Sun Micro Systems, which was later acquired by Oracle in 2010.
• It was originally called OAK, after an Oak Inc. that stood outside Gosling's office. Later, it was renamed Green and then finally renamed Java, inspired by Java Coffee.

JAVA EDITIONS

• Standard Edition (SE):
  • This is the core platform used for beginners' learning stage. It contains all of the libraries that every Java developer should learn.
• Enterprise Edition (EE):
  • It is used for building very large-scale and distributed systems.
  • It's built on SE and provides additional libraries for building fault-tolerant, distributed multi-tier software.
• Micro Edition (ME):
  • It is a subset of SE designed for mobile devices.
• Java Card:
  • It is used in smart cards