Problems for exercises and homework for the "Java Web Development Basics" course @ SoftUni. Submit your solutions on the course page of the current instance.

We will implement a simple application, only with Servlets and JSP, exploring the most interesting exploits of the Servlet API nad JavaServer pages.

MeTube is an application in which you create tubes, with several properties. It has many versions, and you will most probably see it several times.

You will have to create a simple web application which has several pages and 1 object entity.

This is the data layer of the application. There is 1 data object for you to implement.

So let's create our Tube. The Tube is a data object which stores data about an abstract tube. You will see later what it will be used for.

First implement a class Tube -- which has these properties:

• Name -- a String.

• Description -- a String.

• YouTubeLink -- a String.

• Uploader - a String.

In this application you must create several views, similar to the pictures below:

This is the home page, in other words the page that should be visualized when the application starts.

The index page must contain buttons that redirect to create-tube.jsp and all-tubes.jsp.

{width="6.3in" height="1.9458333333333333in"}

This is the page where you create your tubes. It must contain input field for title, textarea for description, inputs for YouTube link and Uploader and a button which creates a Tube with the given values and a link that returns the home page.

{width="6.3in" height="3.441666666666667in"}

This is the page which renders full data about the selected Tube. The selected Tube should be extracted from the database, using the title from the query parameters. If tube does not exist -- write an apropriate message.

{width="6.3in" height="2.1277777777777778in"}

Renders only the titles of the Tubes. Upon clicking a title of a Tube, you should be redirected to a details page, with query parameter -- the title of the Tube. If no tubes are added yet -- write "No tubes -- Create some!"

{width="6.3in" height="2.2020833333333334in"}

Implement a Servlet -- TubeCreateServlet, which listens on route "/tubes/create".

Upon a GET request, it should return a form which accepts 4 inputs -- a title, a description, a YouTubeLink and an uploader.

The form should send a POST request to the same route.

Upon a POST request, you should redirect to "/tubes/details".

Implement a Servlet -- TubeAllServlet, which listens on route "/tubes/all".

Upon a GET request, the Servlet should render a page with the names of all created Tubes. Upon clicking a title of a Tube, you should be redirected to a "/tubes/details", with query parameter -- the title of the Tube.

Implement a Servlet -- TubeDetailsServlet, which listens on route "/tubes/details".

Upon a GET request, the Servlet should extract the Tube with the given title in the query parameters, and render a page with full information about it.

You must use the following things while implementing your application:

• Servlets

• Hibernate

• Repository layer

• Service layer

• Web layer