Java documentation comments

/** is known as documentation comments. It is used by javadoc tool while creating the documentation for the program code.

   * This is a documentation comment.
   * This is my first Java program.
   * This will print 'Hello World' as the output
   * This is an example of multi-line comments.

public class MyFirstJavaProgram {
   public static void main(String[] args) {
      System.out.println("Hello World");