Netbeans/C2/Developing-a-Sample-Web-Application/English-timed

Time	Narration
00:01	Hiii everybody
00:02	Welcome to the tutorial on Introduction to Developing Web Applications on the Netbeans IDE.
00:08	We assume that you have the basic working knowledge of netbeans
00:12	if not please visit the spoken tutorial website for relevant tutorials on Netbeans
00:19	Having viewed the first tutorial you would already be familiar
00:22	with the installation and interface of Netbeans.
00:25	The previous tutorial also teaches you how to create a new project.
00:29	For this demonstration I am using the Linux Operating System Ubuntu v11.04 and Netbeans IDE v7.1.1
00:40	This tutorial will take you through the basics of using Netbeans to develop web applications.
00:45	we will see
00:46	setting up a web application project
00:49	creating and editing web applications source files
00:52	creating a java package and a java source file
00:56	Generating the Getter and Setter methods
00:59	Editing the default JavaServer Pages file
01:02	Creating a JavaServer pages file
01:05	and finally running our web application project
01:08	To follow this tutorial, you will need the Netbeans IDE
01:13	The Java Development Kit (JDK) version 6
01:17	The GlassFish Server Open Source Edition
01:20	All the above can be downloaded in a single bundle from the link shown on the screen
01:26	This tutorial demonstrates how to create a simple web application,
01:30	Deploy it to a server,
01:32	and View its presentation in a browser.
01:35	The application employes (JSP) JavaServer Pages to ask you to input your name
01:42	It then uses JavaBeans component to persist the name during the HTTP session,
01:48	and then retrieves the output on a second JSP page.
01:51	Let us now move to Netbeans and create our web application project
01:58	From the File menu choose New Project
02:01	Under Categories, select Java Web.
02:04	Under Projects, select Web Application , and click Next.
02:09	Give your project a name. I will name my project as HelloWeb
02:15	Specify the Project Location to any directory on your computer.
02:20	Click Next.
02:22	The Server and Settings panel opens.
02:25	Select the version of Java you want to use with your application.
02:29	And Select the server, you want to deploy your application to.
02:34	Click Next.
02:36	In the Frameworks panel,
02:38	click Finish to create the project.
02:41	The IDE creates the HelloWeb project folder.
02:46	This folder contains all of your sources and project metadata.
02:51	The Welcome page, 'index.jsp opens in the Source Editor in the main window.
02:57	You can view the project's file structure in the Files window on the left here
03:05	and it's logical structure in the Projects Window.
03:10	Creating and editing source files is the most important function that the IDE serves.
03:15	Now in the Projects window, expand the Source Packages node.
03:20	Note that the Source Packages node contains only an empty default package node.
03.25	Right-click on the Source Packages and choose New > Java Class.
03:32	Give your class a name. I will name the class as NameHandler
03:40	and in the Package combobox let me type org.mypackage.hello
03:54	And Click Finish.
03:57	The NameHandler.java file opens in the Source Editor.
04:01	Now lets us declare a String variable directly below the class declaration
04:07	I will delare a string variable String name and
04:12	I will also add a constructor public NameHandler to the class
04:23	Now let me also add name = null; within the constructor.
04:30	Let us next generate the Getter and Setter Methods
04:33	Right-click the name field in the Source Editor choose Refactor and Encapsulate Fields from the contextual menu
04:46	Refactoring is a disciplined technique for improving the structure of existing code without changing the observable behaviour.
04:56	In short, you can change the structure of the code without changing the behaviour.
05:01	With Refactoring, you can easily move fields, methods or classes around, without breaking things.
05:08	Lets move back to the IDE.
05:11	The Encapsulate Fields dialog opens, listing the name field.
05:16	Notice that the Fields visibility is set to private,
05:20	and Accessors visibility is set to public, by default
05:24	Indicating that the access modifier for the class variables wil be specified as private,
05:30	Whereas the getter and setter methods will be generated with public modifiers respectively.
05:36	Click on Refactor.
05:39	The Getter and Setter methods are generated for the name field.
05:46	The modifier for the class variable is set to private whereas the getter and setter methods are generated with public modifier.
05:56	Your java class should finally look like this
05:59	Let us next Edit the Default JavaServer Pages File
06:04	Let us Refocus the index.jsp file by clicking its tab displayed at the top of the Source Editor.
06:11	Now let us open the Palette manager by going to the Tools menu > Palette and click on HTML/JSP code clips
06:21	The Palatte manager opens.
06:26	In the palette manager expand the HTML forms options
06:31	Select the Form items.
06:34	Drag it and drop it to the points after the h1 tags in your Source Editor
06:42	The Insert form dialog box opens .
06:45	Let us Specify the values as been shown on the screen:
06:49	The Action as response.jsp
06:54	The Method as GET
06:56	And lets us give our form a name as Name input form.
07:04	Click OK.
07:07	An HTML form is added to the index.jsp file.
07:13	Now from the Palette manager select a Text Input item drag it and drop it to a point just before the closing form tags
07:25	In the Insert text input dialog box specify the Name as name
07:32	Leave the Type at text
07:34	And Click on OK.
07:36	A HTML input tag is now added between the form tags.
07:41	Let us delete the empty value attribute from the input tag.
07:49	Now from the palette select the Button item.
07:53	Drag it and drop it to the point before the closing form tag
07:58	Specify the Label as OK
08:00	The Type as submit
08:03	And Click on OK again
08:05	An HTML button is now added to a form tags.
08:12	Infront of the first input tag let us enter the text Enter your name
08:22	And let us change the default text between the h1 tags
08:28	We will change the text to Entry form
08:34	Now Right click, let me close the palette manager for now.
08:38	Right-click within your Source Editor
08:41	Select the Format option to tidy the format of your code.
08:46	Your index.jsp file should now look like this.
08:49	Let us next Create a JavaServer Pages File
08:53	In the Projects window, right-click on the HelloWeb project node, choose New > JSP.
09:01	The New JSP File wizard opens.
09:05	Name the file as response, and click on Finish.
09:14	Notice that a response.jsp file node displays in the Projects window beneath the index.jsp file ,
09:23	And the new file opens in the Source Editor.
09:26	Open the Palette manager again
09:35	Now expand the JSP option.
09:39	Select a Use Bean item, drag it and drop it to a point just below the body
09:53	The Insert Use Bean dialog opens.
09:56	Specify the values as
09:58	The ID as mybean
10:01	The Class as org.mypackage.hello.NameHandler
10:13	Set the Scope as session
10:15	And click on OK.
10:18	Notice that a jsp:useBean tag is added beneath the body tag.
10:30	JavaBeans are reusable software components for Java.
10:34	They are used to encapsulate many objects into a single object
10:38	So that they can be passed around as a single bean object instead of multiple individual objects.
10:46	Now from the Palette manager, Select a setbean property item, drag it and drop it to a point just before the h1 tags
11:03	And click on OK.
11:12	Here in the jsp:setProperty tag that appears, delete the empty value attribute.
11:21	And set the name attribute to mybean and the Property to name
11:30	Now in between the h1 tags let us change the text to Hello comma space and a exclamation mark
11:40	Now from the Palette manager Select a Get Bean property item drag it and drop it after the Hello text in between the h1 tags
11:51	In the Get Bean Property item
11:53	Set the Bean Name to mybean
11:57	And the Property Name to name
11:59	Click on OK.
12:01	Notice that jsp:getProperty tag is now added between the h1 tags.
12:07	Right-click within the Source Editor again, click on Format to tidy the format of your code if required
12:16	The next step is to run our Web Application Project
12:20	Let me close the palette manager
12:26	In the Projects window, right-click the HelloWeb project node and choose the Run option
12:32	You can also click the Run option from the toolbar or press F6 key on your keyboard to run your Project.
12:41	I will select the button on the toolbar to run my Project
12:44	When you run a Web application the IDE builds and compiles the application code
12:53	Launches the server and deploys the application to the server
12:58	and finally displays the application in a browser window
13:02	To view this process you can open the output window from the Window menu and select the Output option
13:10	You can see that your application has been built successfully
13:17	The index.jsp page opens in your default browser
13:23	Let me run the project again
13:27	Here it is, it opens in your default browser
13:32	Note that the browser window may sometime open before the IDE displays the server output
13:38	Now let us Enter the name in the text box in the browser
13:42	For eg Ubuntu and click on OK.
13:46	The response.jsp page displays, providing you with a simple greeting.
13:52	Now to the assignment part
13:56	As an extension to the web application project, insert two more text fields that is totally three input text fields in your application
14:06	Use the JavaBeans Component to set the bean property and
14:09	View its presentation in the browser
14:12	And finally Retrieve the output on the second JSP page
14:17	I have already constructed my assignment
14:21	Let me open my assignment and run it in the IDE
14:30	I am presented with 3 input text fields
14:35	Let me enter the details and click on Ok
14:42	I should be presented with an output like this
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15:40	This tutorial has been contributed by IT for Change
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Contributors and Content Editors

PoojaMoolya, Pratik kamble, Sandhya.np14