Netbeans/C2/Designing-GUI-for-Sample-Java-Application/English-timed

Time	Narration
00:01	Hello everyone.
00:02	Welcome to the tutorial on Building GUIs using Netbeans.
00:06	In this tutorial, we will see one of the most attractive features of Netbeans, which is its GUI Builder.
00:13	What does Netbeans provide for building GUI?
00:16	It gives you a What You See Is What You Get designer to create your GUI.
00:21	Also it gives you an easy interface to drag-and-drop components to create your layout.
00:27	It comes with a Component Palette which has preinstalled AWT and Swing components.
00:33	We will be making use of this powerful visual editor to build a complete GUI application in just a few minutes.
00:39	For this demonstration I'm using a system that has
00:43	The Linux Operating system Ubuntu v11.04
00:46	and has the Netbeans IDE v7.1.1
00:50	For more details on the installation and requirements please refer to the previous tutorial.
00:56	In this tutorial we will learn to
00:58	Use the Form Editor
01:00	The Source Editor
01:02	The Palette, Inspector, and Properties features
01:05	Add event handlers
01:07	And also Compile and run our application
01:10	Let's get started and build a simple Account balance application in this tutorial
01:15	For this application we want to be able to
01:18	Input the amount credited to the account.
01:21	The amount debited from the account.
01:24	And compute the final balance.
01:26	We will also add a picture to make our application look more attractive.
01:31	Let's also have a menu bar on top for easy and quick navigation.
01:35	Let's now move to netbeans and start by creating a new project.
01:40	Fron the File menu choose New Project > and choose a Java Application. Say Next.
01:49	And give your project a name
01:51	I will name my project as Account balance.
01:58	Don't create a main class but set it as the main project.
02:02	Say Finish,' that should create a new project in your IDE
02:07	Now go back to File in the File menu and select New File
02:15	Choose Swing GUI forms under Categories
02:18	and Jframe Form under File Type
02:21	Say Next.
02:24	I'm going to call this AccountBalance as well,
02:29	But you can give it any other name you wish to.
02:33	Once you say Finish, it takes you to the main design area.
02:39	Lets get familiar with the GUI builder.
02:43	On the right here is the palette
02:45	This contains the pre-installed Swing and AWT components.
02:49	Down here below the palette is the Properties window.
02:53	This shows you the properties of the components as you choose them.
02:58	On the left here is the navigator or the inspector
03:01	which shows you the components that have been added to the frame.
03:05	Here on the workspace in the design mode
03:08	On the top here is the Source button
03:11	When you click on it, it takes you to the source code.
03:15	As you add components to the design,
03:18	'it takes the corresponding source code and adds it to the source here.
03:23	Let's go back to Design mode and see what components we'll use today.
03:28	We will be using some of the components from the palette
03:31	such as Buttons, Labels, Panels, Tabbed pane etc to create our applications
03:38	Now from the Palette let us choose a TabbedPane under swing Containers
03:45	Select Tabbed Pane and click on the form
03:50	This should give you a Tabbed frame. You can re-size it using your mouse.
03:58	Now Go back to the Palette and choose a Panel.
04:02	And Click again on your frame
04:06	That should give you a tab.
04:09	Go back and choose another Panel. And click on the form again
04:14	That gives you 2 tabs totally
04:17	Now you can Rename the tab by either double clicking on the tab or right clicking on the tab and selecting the Edit Text option
04:29	I will call the first tab as Image and rename the second tab to Balance
04:37	Now Let's go back to the Palette and add labels from swing Controls menu
04:43	Choose Label from the Swing Controls and add it to your form here
04:48	We are going to need 6 labels for our application.
04:54	I have now added six labels to my form
04:58	You can position and align them as you click them
05:02	And also use the mouse to re-position or re-align them.
05:06	Now to change the text on a label
05:08	You can either double click on it or right click on it
05:12	and choose the options Edit Text
05:14	Let us rename the labels now
05:16	I'm going to call the first one as Initial Amount.
05:22	The second label as Credit Amount.
05:30	The third one as Debit amount
05:35	And the fourth one as Balance
05:41	Initially, we'll set the initial amount to be Rs 5000.
05:48	Once we compute the balance we can put it into this level
05:53	But for now we will just make it as stars
06:01	Now, go back to the Palette and choose a TextField and we will add to text fields one each next to the credit amount and to the debit amount.
06:16	We should also leave the Textfield places blank.
06:20	Let me edit the text and remove the existing text here
06:27	Let us resize it using the mouse
06:35	Once you have done that, you can now go back to palette and choose a Button.
06:42	Add a button below your frame and
06:48	You can change the label by right clicking on it.
06:53	Choose the Edit text option and name it as Get Balance
06:58	Now this is our GUI!
07:01	Let's now go to the Image tab (tab1) and add an image.
07:05	To do that let's go back to the Palette
07:08	and choose another Label, and drop it on the panel.
07:13	Now from to Properties Window below the palette, search for the icon property and click on the 3 dots here on the right.
07:26	The icons properties windows opens
07:28	Here choose the options External Image, click on the (...) 3 dots again here on the right.
07:35	And look for the image you want to include in your applicaton
07:41	I have selected the image here. Click on OK
07:48	Let us repostion it using the mouse.
07:51	You can remove the text here on the label by double clicking on it and removing the text
07:59	Now we have added in image
08:02	Let us next add a menu to our GUI
08:05	Go to the palette and select the Menu bar option under swing menus
08:12	Choose Menu Bar and click here on top of panel.
08:17	By default it already has 2 Menu labels: File and Edit.
08:22	Double click on the Edit text and rename it to Help.
08:28	You can also add a submenu under File.
08:32	Now in the Inspector or the navigator on the left side , right-click on JMenu1 ,
08:39	Choose Add From Palette option and Select Menu Item.
08:45	That should add a MenuItem.
08:47	You can also rename that to say Exit.
08:54	Now we have added a submenu under the file menu and rename that menu item as well
09:00	Now, our GUI is more or less complete.
09:03	Let's now look at a preview.
09:05	Click on the 'Preview Design' button on the top
09:09	That shows a preview of what you have done so far.
09:12	Here, the buttons don't work yet .
09:16	But once you add in the code, you can have everything working.
09:20	Let us close the preview
09:22	Now, before adding the code, let's give proper variable names to the input textfields.
09:28	Go to the Balance tab, let us give proper variable name to these text fields here.
09:34	Right click on JTextfield1 in the inspector.
09:40	Select change variable name.
09:43	Let us change the variable name to Credit amount
09:50	Click on Ok
09:53	You can also right click on the textfield here in the design mode
09:56	Select Change Variable Name.
10:00	And change variable name into debitAmount.
10:04	Click on OK
10:08	I'm also going to call this final label i.e the stars textfields label as resultBalance.
10:16	Select the Change variable name option again and change the variable to resultBalance
10:23	Click on OK
10:25	Let's now see the code, to get the application working.
10:30	Now this is my sample code
10:32	What I want is to getText() from the creditAmount;
10:37	getText() from the debitAmount,
10:39	compute the balance and place the amount in the final resultBalance.
10:44	Let us copy the code here and let us go back to the IDE
10:51	Now right click on the Get Balance button.
10:55	Choose the option Events, Action and Action Performed
11:00	This will take you to the section of the code
11:03	where you will have to write or paste the code for the action to be performed on the button press.
11:10	Let me paste the copied code here
11:17	Let's save this code and go back to Design mode
11:22	Now lets adding the code to Exit the application.
11:25	Right click on the MenuItem, Exit and Choose Events, Action and Action Performed.
11:40	It switches to the source mode and now we have to a write the code to Exit successfully from the application
11:46	That is going to be System.exit(1).
11:53	Now Save the code and go back to design mode.
11:57	Let us also add a shortcut to the Exit MenuItem
12:02	Double click on the shortcut option here in the Window thats opens
12:07	Give the key stroke as Q and Ctrl and Click on OK
12:14	So now we have set Ctrl Q as the keyboard shortcut to quit from the application
12:20	That its our application is now complete
12:23	Let's now run the application by pressing F6 on your keyboard.
12:30	It as already selected the main class that as to run
12:33	Click on OK
12:37	And here it is. This is our GUI
12:40	Now let's run a check
12:43	Go to the balance tab, enter the credit amount with Rs.300/-.
12:47	And the debit amount as Rs.200. And Say 'Get Balance'.
12:53	This gives us the correct amount in the balance.
12:56	Let us now exit from the application.
12:58	I'll Go to File menu and I'll click on Exit.
13:02	We could have also quit the application by pressing Ctrl Q on the keyboard
13:08	Now With the application complete, it's time for the assignment.
13:14	The task is to create a Temperature convertor application.
13:18	I should have to tabs like the previous one
13:21	1 to convert from Centigrade to Fahrenheit and another for Fahrenheit to Celsius.
13:27	It should also take an input temperature.
13:30	And Display the converted temperature
13:33	It should also have a menu bar on top that shows File and Help options
13:38	And under the file menu have an Exit item with a keyboard shortcut to Exit from the application
13:46	I have already solved the assignment
13:48	Let us see how it shoud look
13:50	I'm going to run my assignment and this is my GUI
13:56	Now let us Enter the input temperature as -40 Celcius and let me click on get Fahrenheit
14:05	The application should give the correct converted output temperature.
14:10	Now let us try the short-cut key to Exit i.e Ctrl X to exit from the application.
14:18	So we have successfully exited from the application upon the keyboard shortcut
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Contributors and Content Editors

PoojaMoolya, Pratik kamble, Sandhya.np14