Introduction to Web Programming

1Differentiate between Java & Java scripts.

Java :-

Java Programming language, is an OOP Language and development environment, application environment, deployment environment. It is  standalone programming Language that do not require a web browser to execute.

Java script:

It is a contained in the HTML source of webpage. It controls document appearance and content.

It also manipulates embedded images and it also interacts with Applets. Its advantage is that it is simplified,

it doesn’t have to be compiled and the source code resides within our HTML document.

1 What are cookies? And why are cookies used for?

Cookies are small text strings you store on a user's computer. Cookies store information for tracking users in  name-value pairs. When you first visit a website it may store a cookie on your computer. Next, when you again visit the site it may read or manipulate the value of the cookie and perform an action based on it. For example, if a site allows you to customize the color of the user interface, it may set the color selected by you in a cookie on your computer and read the color value when next time you request the page of the website. The page can them be displayed in the color stored in the cookie.

2What is XML? Give the XML document.

XML is a simple, common format for representing structured information as text. You can create your own tags to define and structure data, and transmit it.  The basic syntax of XML is extremely simple. As with HTML, XML represents information as text using tags to add structure. A tag begins with a name in between angular brackets (<>). In XML, every tag must have a closing tag. An opening tag, closing tag and any content in between are collectively referred to as an element of an XML document. Elements can contain other elements but they must be properly nested. Elements can also contain text or a combination of elements and text.