package com.tutorialspoint.documentation;

/**
 * The HelloWorld program implements an application that simply displays "Hello World!" to the
 * standard output.
 *
 * @author Peter
 * @version 1.0
 * @since 2015-07-18
 */
public class HelloWorld {
  public static void main(String[] args) {
    // Prints Hello, World! on standard output.
    System.out.println("Hello World!");
  }
}

package com.tutorialspoint.documentation;

/**
 * <h1>Hello, World!</h1> The HelloWorld program implements an application that simply displays
 * "Hello World!" to the standard output.
 * <p>
 * Giving proper comments in your program makes it more user friendly and it is assumed as a high
 * quality code.
 * </p>
 *
 * @author Peter
 * @version 1.0
 * @since 2015-07-18
 */
public class HelloWorld {
  public static void main(String[] args) {
    // Prints Hello, World! on standard output.
    System.out.println("Hello World!");
  }
}

Add example about the usage of <h1> and <p> tags.