Need to understand concept of cookies and his programing now a days people are using cookies policy can anyone please guide steps by steps what is the benefit and how to develop that programmatically ?
Either I'm not sure what you are asking or you aren't sure what you are asking because this doesn't make sense... A Cookie Policy is simply a disclosure. Disclosing the information you are storing and tracking. A Cookie is simply a text file that is stored on the visitors computer which holds certain text data that a web site is allowed to write/fetch. A common use for a cookie is storing a session id that is created right after you sign in to your account. With each click of a page the cookie is passed to the web site giving the site ability to keep state (or in this case... keep the visitor signed in). You can use the cookie to track/follow the customer around your site etc. Creating cookies and fetching data is simple. While the actual header data is the same, most languages have their own api/library to handle cookies.
It's very strange to see in your signature "Web Development Company" and read that question It's seems you should start from Google and find what cookie is )
Have a look at the cookies stored in your browser for any particular site you're on? Use Firebug in Firefox, with webdev toolbar for instance? And... these questions from someone stating "web development company" in their signature doesn't really bestow confidence. Seriously. Here's an example of a cookie from this page we're on right now: Name _gat Value 1 Host .digitalpoint.com Path / Expires Thu, 26 Feb 2015 00:22:16 GMT Secure No HttpOnly No Code (markup): This is collected from the Cookie-menu in Webdev toolbar in Firefox