Netbeans/C2/Adding-a-File-Chooser/English-timed

Time	Narration
00.00	Hello
00.01	Welcome to the tutorial on Adding a File Chooser to a Java Application.'
00.07	In this tutorial, we will
00.09	Create the application
00.10	Create the application form.
00.12	Add the File Chooser
00.14	Configure the File Chooser.
00.17	And run the application
00.19	For this demonstration, I am using the Linux Operating System, Ubuntu v12.04.
00.26	and Netbeans IDE v7.1.1
00.31	In this tutorial, we will learn to add a File chooser to a Java Application using the javax.swing.JFileChooser component.
00.42	As a part of this exercise, we will learn to create a small Java application that loads a .txt file into a Text Area.
00.52	Let us first create the Java Application:
00.55	Launch the IDE.
00.57	From the main menu, choose File and New Project
01.03	Choose the Java category and the Java Application project type.
01.08	And click Next.
01.10	In the Project Name field, let's type JFileChooserDemo.
01.20	Clear the Create Main Class checkbox.
01.23	Make sure that the Set as Main Project checkbox is selected.
01.27	Click Finish.
01.31	Here, we will create the JFrame container and add a few components to it.
01.37	Right click on the Source Packages node.
01.41	Choose New > Other..
01.45	Choose the Swing GUI Forms categories and the JFrameForm type.
01.51	Click Next.
01.54	For Class Name, type JFileChooserDemo.
02.02	In the Package field, type jfilechooserdemo.resources.
02.12	Click Finish.
02.17	In the Properties window, select the Title property.
02.22	And type Demo Application.
02.30	Press Enter to confirm.
02.32	In the Palette, open the Swing Menus category.
02.40	Select the Menu Bar component and drag it to the top left corner of the Jframe.
02.50	Right-click the Edit item of the Menu Bar component.
02.55	Select Delete in the context menu.
02.59	Next let us add a menu item that allows to open the FileChooser from the running application.
03.07	Make sure the Menu Bar' is selected before you drag another Menu Item here.
03.14	In the Swing Menus category in the Palette, select a new Menu Item
03.22	Drag it to the Menu Bar, and drop it onto the File item of the Menu Bar.
03.30	Right click jMenuItem1 in the Design view.
03.35	And choose Change Variable Name from the context menu.
03.41	Rename the item to Open and click OK.
03.48	Make sure that the jMenuItem1 is still selected in the Design view.
03.53	Press the Space bar to edit the text of the component.
03.58	Change the text to Open and press Enter to confirm.
04.04	Specify the action handler for the Open menu item.
04.08	Right click the Menu Item Open and choose Events, Action, Action Performed from the context menu.
04.20	The GUI builder automatically switches to the source view
04.25	A new event handler method OpenActionPerformed() is generated.
04.31	Let us switch back to the Design view.
04.35	Let's add a menu item to exit the File Chooser.
04.39	In the Palette , choose Swing Menus category.
04.45	Select Menu Item
04.48	Drag it to the Menu Bar below the Open menu item on the form.
04.53	Notice the orange highlighting that indicates where the jmenuItem1 is going to be placed.
05.03	Right click jMenuItem1 in the Design View.
05.07	Choose Change Variable Name from the context menu.
05.12	Rename the item to Exit and click on OK.
05.20	Make sure that the jMenuItem1 is still selected in the Design View.
05.25	Press the Space bar to edit the text of the component
05.30	Change the text to Exit and press Enter to confirm.
05.36	Specify the action handler for the Exit menu item.
05.41	Right click the menu item Exit.
05.44	Choose Events, Action, Action Performed() from the context menu..
05.51	The GUI Builder automatically switches to the Source view.
05.56	A new event handler method named ExitActionPerformed() is generated.
06.02	The ExitActionPerformed node appears in the Navigator window above the OpenActionPerformed() node.
06.12	If you cannot view your Navigator,
06.14	go to the Window menu in the menu bar,
06.18	choose Navigating and click on Navigator.
06.25	Here, you can see the ExitActionPerformed node appearing above the OpenActionPerformed node.
06.33	To make the Exit menu item work,
06.36	Let us include the statement System.exit(0); into the ExitActionPerformed() method body.
06.47	Switch back to Design mode.
06.50	From the Swing Controls category of the Palette , drag a Text Area onto the form.
07.06	Resize the added component to make room for the text displayed by the File Chooser later.
07.18	Rename the variable as textarea.
07.26	Let us next add the actual File Chooser.
07.31	If your Navigator window is not open, choose Window, Navigating, a Navigator to open it..
07.38	And in the Navigator , right click the Jframe node.
07.44	Choose Add From Palette, Swing Windows, and File Chooser from the context menu.
07.54	You can notice in the Navigator that a JFileChooser was added to the form.
08.01	Right click the JFileChooser node and rename the variable to fileChooser.
08.16	Click OK
08.19	We have now added the File Chooser.
08.21	The next step is to configure the File Chooser to display the title that you want.
08.27	We will also add a custom file filter, and integrate the File Chooser into your application.
08.34	Click to select the JfileChooser in the Navigator window.
08.38	Now let's edit its properties in the Properties dialog box.
08.43	In the Properties window below the Palette,
08.47	Change the dialogTitle to This is my open dialog.
09.00	Press Enter to confirm.
09.03	Now switch to the Source mode.
09.07	Now, to integrate the FileChooser into your application..
09.12	I have an existing code snippet, which I will copy and paste into the existing OpenActionPerformed() method.
09.20	This example reads the file contents and displays them in the TextArea.
09.27	We will now call the FileChooser's getSelectedFile() method to determine which file the user has clicked.
09.36	I will copy this code onto my clipboard, and in the Source view of the IDE, paste it inside the OpenActionPerformed method.
09.51	If the editor reports errors in your code, right click anywhere in the code and select Fix Imports.
10.00	Now, let us add a custom file filter that makes the File Chooser display only .txt files.
10.09	Switch to the design mode and select the fileChooser in the Navigator window.
10.16	In the Properties window, click the ellipsis button next to the fileFilter property.
10.25	In the fileFilter dialog box, select Custom Code from the combo-box..
10.31	Type new MyCustomFilter() in the text field.
10.41	and Click OK.
10.44	To make the custom code work, we will write the MyCustomFilter class.
10.52	This inner or outer class will extend the fileFilter class.
10.57	I will copy and paste this code snippet
11.04	Into the source of our class below the import statements.
11.11	This inner or outer class will extend the fileFilter class.
11.20	Right click the JFileChooserDemo project in the Project window, and select Run to start the sample project.
11.31	In the Run Project dialog box, select the jfilechooserdemo.resources.JFileChooserDemo main class.
11.41	Click OK.
11.47	In the running Demo Application, choose Open in the File menu to trigger the action.
11.55	Open any text file to display its contents in the text area.
12.00	Let me select the Sample.txt file, and choose Open.
12.06	The fileChooser displays the contents of the text file.
12.10	To close the application select Exit in the File Menu
12.17	In this tutorial, you learnt to,
12.19	Add a File chooser to a Java application and
12.23	Configure the File chooser
12.27	As an assignment, use the same demo project we have created and add the following features:
12.35	Add a Save menu item under the menu bar
12.38	Add keyboard short-cuts for all the menu items
12.42	Add a code snippet to the Save action, to save the file.
12.51	I have already created a similar assignment, where the filechooser displays the Save option under the File menu,
13.01	and gives you the option to save the text file which you open.
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13.59	This tutorial has been contributed by IT for Change
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Contributors and Content Editors

PoojaMoolya, Pratik kamble, Sandhya.np14