Difference between revisions of "Netbeans/C2/Handling-Images-in-a-Java-GUI-Application/English-timed"

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| 00:01
 
| 00:01
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|Hii everyone.  
+
|Hi everyone.  
  
 
|-
 
|-
 
| 00:02
 
| 00:02
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| Welcome to this tutorial on '''Handling Images in a Java GUI Application using Netbeans IDE. '''
+
| Welcome to this tutorial on '''Handling Images in a Java GUI Application''' using '''Netbeans IDE. '''
  
 
|-
 
|-
 
|00:10
 
|00:10
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|We assume that you have the basic working knowledge of Netbeans.  
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|We assume that you have the basic working knowledge of '''Netbeans'''.  
  
 
|-
 
|-
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|-
 
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| 00:22
 
| 00:22
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| If not, then please visit the Spoken Tutorial website for relevant tutorials on Netbeans.  
+
| If not, then please visit the '''Spoken Tutorial''' website for relevant tutorials on '''Netbeans'''.  
  
 
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|-
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| 00:34
 
| 00:34
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|And perform actions on them, in a sample '''GUI''' application.
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|and perform actions on them, in a sample '''GUI application.'''  
  
 
|-
 
|-
 
|00:39
 
|00:39
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|For this demonstration, I am using the Linux Operating System Ubuntu v11.04 and Netbeans IDE v7.1.1  
+
|For this demonstration, I am using the '''Linux Operating System Ubuntu v11.04''' and '''Netbeans IDE v7.1.1'''.
  
 
|-
 
|-
 
| 00:52
 
| 00:52
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|The standard way to handle and access images in a Java Application is by using the '''getResource()''' method.  
+
|The standard way to handle and access images in a Java Application is by using the ''''getResource()' '''method'''.  
  
 
|-
 
|-
 
| 00:59
 
| 00:59
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| We will learn how to use the IDE's GUI Builder to generate the code to include images in your application,
+
| We will learn how to use the IDE's '''GUI Builder''' to generate the code, to include images in your application  
  
 
|-
 
|-
 
|01:07
 
|01:07
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|and create a simple Jframe with one Jlabel displaying an image.  
+
|and create a simple '''Jframe''' with one '''Jlabel''' displaying an image.  
  
 
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|01:15
 
|01:15
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|Create the application form  
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|* Create the application form  
  
 
|-
 
|-
 
|01:18
 
|01:18
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|Add a package for the image  
+
|* Add a package for the image  
  
 
|-
 
|-
 
| 01:20
 
| 01:20
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|Display the image on the Label  
+
|* Display the image on the Label  
  
 
|-
 
|-
 
|01:22
 
|01:22
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|Create mouse-events and pop-ups  
+
|* Create mouse-events and pop-ups  
  
 
|-
 
|-
 
|01:25
 
|01:25
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|Build and run the application  
+
|* '''Build''' and '''run''' the application.
  
 
|-
 
|-
 
|01:28
 
|01:28
−
|Now let us switch to the '''IDE''' to create our sample application.  
+
|Now, let us switch to the '''IDE''' to create our sample application.  
  
 
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|-
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|-
 
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|01:37
 
|01:37
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|Under '''Categories ''', select  '''Java''', under '''Projects''' select ''' Java Application''' and click '''Next. '''
+
|Under '''Categories ''', select  '''Java'''; under '''Projects''' select ''' Java Application''' and click '''Next. '''
  
 
|-
 
|-
 
|01:46
 
|01:46
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| In the '''Project Name''' field, type '''ImageDisplayApp. '''
+
| In the '''Project Name''' field, type "ImageDisplayApp".
  
 
|-
 
|-
 
| 01:54
 
| 01:54
−
|Clear the ''' Create Main Class''' checkbox.  
+
|Clear the ''' Create Main Class''' check-box.  
  
 
|-
 
|-
 
| 01:58
 
| 01:58
−
|Make sure that the '''Set as Main Project''' checkbox is selected.  
+
|Make sure that the '''Set as Main Project''' check-box is selected.  
  
 
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| 02:08
 
| 02:08
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|In this section, we will create the '''Jframe form''' and add a '''Jlabel''' to the form.  
+
|In this section, we will create the '''Jframe form''' and add a '''Jlabel''' to the '''form'''.  
  
 
|-
 
|-
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|-
 
|-
 
| 02:17
 
| 02:17
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|In the '''Projects''' window, expand the ''' ImageDisplayApp''' node.  
+
|In the '''Projects''' window, expand the '''ImageDisplayApp''' node.  
  
 
|-
 
|-
 
| 02:23
 
| 02:23
−
|Right-click on the '''Source Packages''' node and choose ''' New''',  '''Jframe form.'''  
+
|Right-click on the '''Source Packages''' node and choose ''' New >> Jframe Form.'''  
  
 
|-
 
|-
 
|02:30
 
|02:30
−
|In the '''Class Name''' field, type '''ImageDisplay. '''
+
|In the '''Class Name''' field, type: "ImageDisplay".  
  
 
|-
 
|-
 
|02:37
 
|02:37
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| In the '''Package''' field, type '''org.me.myimageapp.'''
+
| In the '''Package''' field, type: "org.me.myimageapp"
  
 
|-
 
|-
 
|02:45
 
|02:45
−
| And Click '''Finish. '''
+
| and click '''Finish.'''
  
 
|-
 
|-
 
|02:48
 
|02:48
−
|Now let us add the '''Jlabel. '''
+
|Now, let us add the '''Jlabel.'''
  
 
|-
 
|-
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|-
 
|-
 
| 03:01
 
| 03:01
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|For now, your form should look something like this.  
+
|For now, your '''form''' should look something like this.  
  
 
|-
 
|-
 
|03:06
 
|03:06
−
|When you use images or other resources in an application, typically you create a separate Java package for the resource.  
+
|When you use images or other resources in an application, typically you create a separate Java package for the '''resource'''.  
  
 
|-
 
|-
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|-
 
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| 03:30
 
| 03:30
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|In the '''New Package Wizard,''' add '''.resources''' to '''org.me.myimageapp.'''
+
|In the '''New Package Wizard,''' add ''''.resources'''' to '''org.me.myimageapp.'''
  
 
|-
 
|-
 
| 03:40
 
| 03:40
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|So the new package is now called '''org.me.myimageapp.resources.'''
+
|So, the new package is now called '''org.me.myimageapp.resources.'''
  
 
|-
 
|-
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|-
 
|-
 
| 04:04
 
| 04:04
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| Let us now add the image to the label.  
+
| Let us now add the image to the '''label'''.  
  
 
|-
 
|-
 
| 04:08
 
| 04:08
−
|In the '''GUI designer''', select the label that you have added to your form.  
+
|In the '''GUI designer''', select the label that you have added to your '''form'''.  
  
 
|-
 
|-
 
| 04:14
 
| 04:14
−
|In the '''Properties''' window, below the palette, on the right hand side of the window, scroll to the '''Icon''' property.  
+
|In the '''Properties''' window, below the '''Palette''', on the right hand side of the window, scroll to the '''icon''' property.  
  
 
|-
 
|-
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|-
 
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| 04:30
 
| 04:30
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|In the '''Icon Property''' dialog box, click '''Import to Project.'''
+
|In the '''icon Property''' dialog-box, click '''Import to Project.'''
  
 
|-
 
|-
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|-
 
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| 04:45
 
| 04:45
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|In the '''Select Target Folder''' page of the wizard, select the '''Resources''' folder.
+
|In the '''Select target folder''' page of the wizard, select the '''resources''' folder  
  
 
|-
 
|-
 
| 04:49
 
| 04:49
−
|And click '''Finish. '''
+
|and click '''Finish. '''
  
 
|-
 
|-
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|-
 
|-
 
| 04:57
 
| 04:57
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|Therefore, when you build and run the application, the image is included in the distributable '''JAR''' file.  
+
|Therefore, when you '''build''' and '''run''' the application, the image is included in the distributable '''JAR''' file.  
  
 
|-
 
|-
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|-
 
|-
 
| 05:11
 
| 05:11
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| And right click on your project node and select ''' Clean and Build''' option.  
+
| And right-click on your project node and select ''' Clean and Build''' option.  
  
 
|-
 
|-
 
| 05:18
 
| 05:18
−
|You can now go to the '''Files''' menu, and under the '''build''' folder,
+
|You can now go to the '''Files''' menu and under the '''build''' folder,
  
 
|-
 
|-
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|-
 
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| 05:33
 
| 05:33
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|It generates the code in the imagedisplay class to access the image.  
+
|It generates the code in the ''''imagedisplay' class''' to access the image.  
  
 
|-
 
|-
 
| 05:38
 
| 05:38
−
|It also displays your image on the label in the '''Design''' view of your form.  
+
|It also displays your image on the label in the '''Design''' view of your '''form'''.  
  
 
|-
 
|-
 
| 05:43
 
| 05:43
−
|At this point, you can do some simple things to improve the appearance of the form.  
+
|At this point, you can do some simple things to improve the appearance of the '''form'''.  
  
 
|-
 
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| 06:15
 
| 06:15
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|So this text is not needed.  
+
|So, this text is not needed.  
  
 
|-
 
|-
 
| 06:18
 
| 06:18
−
|Now let us drag the '''label''' to center it on the form.  
+
|Now, let us drag the '''label''' to center it on the '''form'''.  
  
 
|-
 
|-
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|-
 
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| 06:30
 
| 06:30
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|Scroll down to the line that says ''' Generated Code.'''  
+
|Scroll down to the line that says '''Generated Code'''.
  
 
|-
 
|-
 
| 06:33
 
| 06:33
−
| And click the plus sign (+) to the left of the ''' Generated Code''' line to display the code that the ''' GUI Designer''' has generated.  
+
| And click the plus sign (+) to the left of the ''' Generated Code''' line, to display the code that the ''' GUI Designer''' has generated.  
  
 
|-
 
|-
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|-
 
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| 06:49
 
| 06:49
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|Since you have used the ''' Property editor''' for ''' jLabel1'''s icon property, the '''IDE''' has generated the '''setIcon''' method.  
+
|Since you have used the ''' Property editor''' for ''' jLabel1'''s icon property, the '''IDE''' has generated the '''setIcon''' '''method'''.  
  
 
|-
 
|-
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|-
 
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| 07:28
 
| 07:28
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|Here you can add the code to customize your action on a mouse click.  
+
|Here you can add the code to customize your action on a '''mouse-click'''.  
  
 
|-
 
|-
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|-
 
|-
 
| 08:05
 
| 08:05
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|First I have created a new ''' Jframe''' for the pop-up.  
+
|First, I have created a new ''' Jframe''' for the pop-up.  
  
 
|-
 
|-
 
| 08:12
 
| 08:12
−
|And I have set the default close operation.  
+
|And I have set the '''defaultCloseOperation'''.  
  
 
|-
 
|-
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|-
 
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| 08:24
 
| 08:24
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|After adding these lines of code, let us import the necessary packages by adding two statements at the beginning of the file.  
+
|After adding these lines of code, let us '''import''' the necessary packages by adding two statements at the beginning of the file.  
  
 
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| 08:53
 
| 08:53
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|This will import the necessary packages required for this program.  
+
|This will import the necessary '''package'''s required for this program.  
  
 
|-
 
|-
 
| 08:59
 
| 08:59
−
|Let us now build and run the application.  
+
|Let us now '''build''' and '''run''' the '''application'''.  
  
 
|-
 
|-
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|-
 
|-
 
| 09:16
 
| 09:16
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|When you set the ''' Main class''', the ''' IDE''' knows which class to run when you run the project.  
+
|When you set the ''' Main class''', the ''' IDE''' knows which '''class''' to run when you run the project.  
  
 
|-
 
|-
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|-
 
|-
 
| 09:33
 
| 09:33
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|Here right-click on the '''ImageDisplayApp''' project's '''Node''' in the Projects window, and choose '''Properties. '''
+
|Here, right-click on the '''ImageDisplayApp''' project's '''Node''' in the '''Projects''' window and choose '''Properties. '''
  
 
|-
 
|-
 
| 09:41
 
| 09:41
−
|In the '''Project Properties''' dialog box, select the '''Run''' category on the left side.  
+
|In the '''Project Properties''' dialog-box, select the '''Run''' category on the left side.  
  
 
|-
 
|-
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|-
 
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| 10:01
 
| 10:01
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|Say OK here.  
+
|Say '''OK''' here.  
  
 
|-
 
|-
 
| 10:05
 
| 10:05
−
|Now right-click  on the ''' Project node,'''  and select '''Clean & Build. '''
+
|Now, right-click  on the ''' Project node'''  and select '''Clean & Build. '''
  
 
|-
 
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| 10:20
 
| 10:20
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|The '''Build''' folder contains the compiled class.  
+
|The '''Build''' folder contains the compiled '''class'''.  
  
 
|-
 
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| 10:34
 
| 10:34
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|Our output window opens with the image.  
+
|Our '''output''' window opens with the image.  
  
 
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| 10:42
 
| 10:42
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|And you can see the pop-up at the top, which shows the description of the image.  
+
|And you can see the pop-up at the top which shows the description of the image.  
  
 
|-
 
|-
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| 10:54
 
| 10:54
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|Create another GUI with four images, similar to the demonstration shown in this tutorial,
+
|Create another GUI with four images, similar to the demonstration shown in this tutorial.
  
 
|-
 
|-
 
| 11:01
 
| 11:01
−
|For each of the image, specify different events such as '''keyboard event, mouse-motion event, mouse-click event, mouse-wheel event'''  
+
|For each of the images, specify different events such as '''keyboard event, mouse-motion event, mouse-click event, mouse-wheel event'''.
  
 
|-
 
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| 11:17
 
| 11:17
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|Let us run the assignment project.
+
|Let us '''run''' the assignment project.
  
 
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| 11:26
 
| 11:26
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|I have created keyboard-events and mouse events for my assignment here.  
+
|I have created keyboard-events and mouse-events for my assignment here.  
  
 
|-
 
|-
 
| 11:34
 
| 11:34
−
|So, to summarize,
+
|So, to summarize-
  
 
|-
 
|-
 
| 11:36
 
| 11:36
−
|we have, created a Jframe form  
+
|we have created a '''Jframe form''',
  
 
|-
 
|-
 
| 11:39
 
| 11:39
−
|added a package for the image  
+
|added a package for the image,
  
 
|-
 
|-
 
| 11:41
 
| 11:41
−
|displayed the image on the label  
+
|displayed the image on the label,
  
 
|-
 
|-
 
| 11:44
 
| 11:44
−
|and also created mouse events and pop-ups  
+
|and also created mouse-events and pop-ups.
  
 
|-
 
|-
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|-
 
|-
 
| 12:02
 
| 12:02
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|The Spoken Tutorial project team conduct workshops using Spoken Tutorials.  
+
|The Spoken Tutorial project team: * conducts workshops using Spoken Tutorials.  
  
 
|-
 
|-
 
| 12:07
 
| 12:07
−
|Gives certificates to those who pass an online test.  
+
|* Gives certificates to those who pass an online test.  
  
 
|-
 
|-
 
| 12:11
 
| 12:11
−
|For more details please write to contact@spoken-tutorial.org
+
|For more details, please write to:
 +
contact@spoken-tutorial.org
  
 
|-
 
|-
 
| 12:19
 
| 12:19
−
|Spoken Tutorial Project is a part of the Talk to a Teacher Project
+
|'''Spoken Tutorial''' project is a part of the '''Talk to a Teacher''' project.
  
 
|-
 
|-
 
| 12:23
 
| 12:23
−
| It is Supported by the National Mission on education through ICT, MHRD, Government  of India
+
| It is supported by the National Mission on education through ICT, MHRD, Government  of India.
  
 
|-
 
|-
 
| 12:30
 
| 12:30
−
|More information on this mission is available at spoken-tutorial.org/NMEICT-Intro
+
|More information on this mission is available at:
 +
spoken-tutorial.org/NMEICT-Intro.
  
 
|-
 
|-
 
| 12:42
 
| 12:42
−
|This tutorial has been  contributed by IT for Change  
+
|This tutorial has been  contributed by '''IT for Change'''.
  
 
|-
 
|-
 
| 12:46
 
| 12:46
 
|Thank you for joining us.
 
|Thank you for joining us.

Revision as of 21:53, 26 October 2015

Time Narration
00:01 Hi everyone.
00:02 Welcome to this tutorial on Handling Images in a Java GUI Application using Netbeans IDE.
00:10 We assume that you have the basic working knowledge of Netbeans.
00:15 We also assume that you know to place text fields, buttons, menus, etc. on a JFrame form.
00:22 If not, then please visit the Spoken Tutorial website for relevant tutorials on Netbeans.
00:29 In this tutorial, we will learn in detail about handling images
00:34 and perform actions on them, in a sample GUI application.
00:39 For this demonstration, I am using the Linux Operating System Ubuntu v11.04 and Netbeans IDE v7.1.1.
00:52 The standard way to handle and access images in a Java Application is by using the 'getResource()' method.
00:59 We will learn how to use the IDE's GUI Builder to generate the code, to include images in your application
01:07 and create a simple Jframe with one Jlabel displaying an image.
01:13 In this tutorial, we will -
01:15 * Create the application form
01:18 * Add a package for the image
01:20 * Display the image on the Label
01:22 * Create mouse-events and pop-ups
01:25 * Build and run the application.
01:28 Now, let us switch to the IDE to create our sample application.
01:33 From the File menu, choose New Project.
01:37 Under Categories , select Java; under Projects select Java Application and click Next.
01:46 In the Project Name field, type "ImageDisplayApp".
01:54 Clear the Create Main Class check-box.
01:58 Make sure that the Set as Main Project check-box is selected.
02:03 Click Finish. The project is created in your IDE.
02:08 In this section, we will create the Jframe form and add a Jlabel to the form.
02:14 Let us first create the Jframe form.
02:17 In the Projects window, expand the ImageDisplayApp node.
02:23 Right-click on the Source Packages node and choose New >> Jframe Form.
02:30 In the Class Name field, type: "ImageDisplay".
02:37 In the Package field, type: "org.me.myimageapp"
02:45 and click Finish.
02:48 Now, let us add the Jlabel.
02:52 In the Palette, on the right hand side of the IDE, select the Label component and drag it to the Jframe.
03:01 For now, your form should look something like this.
03:06 When you use images or other resources in an application, typically you create a separate Java package for the resource.
03:15 On your local file system, a package corresponds with a folder.
03:19 In the Projects window, right-click the org.me.myimageapp node and choose New > Java Package.
03:30 In the New Package Wizard, add '.resources' to org.me.myimageapp.
03:40 So, the new package is now called org.me.myimageapp.resources.
03:47 Click Finish.
03:49 In the Projects window, you should see the image appear within the org.me.myimageapp.resources package, when you add the image.
03:59 In this application, the image will be embedded within a Jlabel component.
04:04 Let us now add the image to the label.
04:08 In the GUI designer, select the label that you have added to your form.
04:14 In the Properties window, below the Palette, on the right hand side of the window, scroll to the icon property.
04:23 Click the ellipsis (...) or the three dots on the right side.
04:30 In the icon Property dialog-box, click Import to Project.
04:34 In the file chooser, navigate to the folder that contains your image that you want to use.
04:42 Click Next.
04:45 In the Select target folder page of the wizard, select the resources folder
04:49 and click Finish.
04:52 After you click Finish, the IDE copies the image to your project.
04:57 Therefore, when you build and run the application, the image is included in the distributable JAR file.
05:07 Click OK here.
05:11 And right-click on your project node and select Clean and Build option.
05:18 You can now go to the Files menu and under the build folder,
05:29 under dist folder, you can see the jar file.
05:33 It generates the code in the 'imagedisplay' class to access the image.
05:38 It also displays your image on the label in the Design view of your form.
05:43 At this point, you can do some simple things to improve the appearance of the form.
05:48 In the Properties window, select the Text property
05:56 and delete jLabel1.
06:04 That value was generated by the GUI Builder as display text for the label.
06:10 However, you are using the label to display an image rather than text.
06:15 So, this text is not needed.
06:18 Now, let us drag the label to center it on the form.
06:26 In the GUI Designer, click the Source tab.
06:30 Scroll down to the line that says Generated Code.
06:33 And click the plus sign (+) to the left of the Generated Code line, to display the code that the GUI Designer has generated.
06:42 Here, the keyline is this.
06:49 Since you have used the Property editor for jLabel1s icon property, the IDE has generated the setIcon method.
06:57 The parameter of that method contains a call to the getResource() method on an anonymous inner class of ImageIcon.
07:10 Once your image has been added, in the Design view right-click on the image.
07:19 Click on Events > Mouse > mouseClicked.
07:24 The view is switched to the Source mode.
07:28 Here you can add the code to customize your action on a mouse-click.
07:33 Let me add a few lines of code to generate a pop-up when the image is clicked in the GUI.
08:00 I have now entered a few lines of code to generate the pop-up.
08:05 First, I have created a new Jframe for the pop-up.
08:12 And I have set the defaultCloseOperation.
08:15 And finally provided the text for the pop-up.
08:24 After adding these lines of code, let us import the necessary packages by adding two statements at the beginning of the file.
08:36 Include: import javax.swing.*;
08:45 and import java.awt.*;
08:53 This will import the necessary packages required for this program.
08:59 Let us now build and run the application.
09:02 We have generated the code for accessing and displaying the image.
09:07 Let us build and run the application to ensure that the image is accessed.
09:12 First, we need to set the project's Main class.
09:16 When you set the Main class, the IDE knows which class to run when you run the project.
09:21 In addition, this ensures that the Main class element in the application's JAR file is generated when you build the application.
09:33 Here, right-click on the ImageDisplayApp project's Node in the Projects window and choose Properties.
09:41 In the Project Properties dialog-box, select the Run category on the left side.
09:47 Click the Browse button, that is next to the Main Class field.
09:51 Select org.me.myimageapp.ImageDisplay and click on Select Main Class
10:01 Say OK here.
10:05 Now, right-click on the Project node and select Clean & Build.
10:11 You can view the Build properties of the application in the Files window.
10:20 The Build folder contains the compiled class.
10:23 The dist folder contains an executable JAR file that contains the compiled class and the image.
10:32 Now choose Run from the tool bar.
10:34 Our output window opens with the image.
10:39 I will click on this image now.
10:42 And you can see the pop-up at the top which shows the description of the image.
10:50 Now, time for the assignment!
10:54 Create another GUI with four images, similar to the demonstration shown in this tutorial.
11:01 For each of the images, specify different events such as keyboard event, mouse-motion event, mouse-click event, mouse-wheel event.
11:12 I have already created the assignment.
11:17 Let us run the assignment project.
11:20 Your assignment should look similar to this.
11:26 I have created keyboard-events and mouse-events for my assignment here.
11:34 So, to summarize-
11:36 we have created a Jframe form,
11:39 added a package for the image,
11:41 displayed the image on the label,
11:44 and also created mouse-events and pop-ups.
11:49 Watch the video available at the link shown on the screen.
11:53 It summarizes the Spoken Tutorial project.
11:56 If you do not have good bandwidth, you can download and watch it.
12:02 The Spoken Tutorial project team: * conducts workshops using Spoken Tutorials.
12:07 * Gives certificates to those who pass an online test.
12:11 For more details, please write to:

contact@spoken-tutorial.org

12:19 Spoken Tutorial project is a part of the Talk to a Teacher project.
12:23 It is supported by the National Mission on education through ICT, MHRD, Government of India.
12:30 More information on this mission is available at:

spoken-tutorial.org/NMEICT-Intro.

12:42 This tutorial has been contributed by IT for Change.
12:46 Thank you for joining us.

Contributors and Content Editors

PoojaMoolya, Pratik kamble, Sandhya.np14

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