Added Prominent comments for more understandable code

Author: garvit-joshi

A_Hello_World.java

@@ -1,26 +1,27 @@
 class A_Hello_World
 {
-/*
+/********************************************
 - Every program in Java must have a class.
 - Every Java program starts from the main method.
-*/
+******************************************/
 public static void main(String args[])
 {
 System.out.println("Hello World");
 }
 }
-/*
+/************************************************************************************************
 - public: anyone can access it
 - static: method can be run without creating an instance of the class containing the main method
 - void: method doesn't return any value
 - main: the name of the method
-*/
-/*
+**************************************************************************************************/
+/************************************************************
 -Another name for a Multi-Line comment is a Block comment.
-*/
-/**
+************************************************************/
+/******************************************
 This is also a documentation comment
-*/
-/**
-Javadoc is a tool which comes with JDK and it is used for generating Java code documentation in HTML format from Java source code which has required documentation in a predefined format.
-*/
+******************************************/
+/***********************************************************************************************
+Javadoc is a tool which comes with JDK and it is used for generating Java code documentation in 
+HTML format from Java source code which has required documentation in a predefined format.
+***********************************************************************************************/

C_UserInput.java

@@ -13,7 +13,7 @@ public static void main(String[ ] args)
 */
 }
 }
-/**
+/***************************
 Read a byte - nextByte()
 Read a short - nextShort()
 Read an int - nextInt()
@@ -23,4 +23,4 @@ public static void main(String[ ] args)
 Read a boolean - nextBoolean()
 Read a complete line - nextLine()
 Read a word - next().charAt(0);
-*/
+******************************/

D_Conditionals.java

@@ -22,9 +22,9 @@ else if(age<13)
 {
 System.out.println("Error");
 }
-/*
+/******************************
 Logical Statements two=&& , ||
-*/
+***************************/
 age = 25;
  int money = 100;
  if (age > 18 || money > 500)