Difference between revisions of "Netbeans/C2/Integrating-an-Applet-in-a-Web-Application/English-timed"
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Revision as of 17:58, 6 June 2016
| Time | Narration |
| 00:01 | Hi everyone. |
| 00:02 | Welcome to the tutorial on Integrating an Applet in a Web Application. |
| 00:08 | The application that you build in this tutorial shows you how to build and deploy applets in the Netbeans IDE. |
| 00:16 | If this is the first time you are using Netbeans, please view the tutorial - |
| 00:21 | Introduction to Netbeans to get started with the IDE. |
| 00:25 | Also, view the tutorials Developing Web Applications and Designing GUIs on Netbeans |
| 00:32 | to get familiarized with the IDE. |
| 00:36 | All the above tutorials can be viewed on the Spoken Tutorial website. |
| 00:41 | For this demonstration, I am using the Linux Operating System Ubuntu version 11.04 and Netbeans IDE version 7.1.1. |
| 00:55 | In this tutorial, we will: |
| 00:57 | * Create an Applet |
| 00:59 | * Run the Applet and |
| 01:02 | * Embed the applet in a web application. |
| 01:05 | Let us now launch the IDE to create our project. |
| 01:10 | Go to File > New Project and create a Java Class Library . |
| 01:17 | Click Next. |
| 01:19 | Give your Project a name. |
| 01:21 | I will name my project as "SampleApplet". |
| 01:26 | Set the Location to any directory on your system. |
| 01:30 | And, click Finish to create your project. |
| 01:34 | Let us next create the Applet Source File. |
| 01:39 | Right-Click on the "SampleApplet" project node |
| 01:42 | and choose Properties to open the Properties window. |
| 01:47 | Select the desired Source or Binary Format for the project. |
| 01:53 | This is to make sure if the correct version of the 'JDK' has been chosen. |
| 01:59 | For example- if you choose the latest version of JDK, |
| 02:04 | then the applet might not run on machines that have an older version of the Java browser plugin. |
| 02:10 | I will select the latest version of JDK since my browser supports the latest version of the java browser plugin. |
| 02:19 | Click on OK. |
| 02:21 | Right-Click again on the SampleApplet project node |
| 02:25 | and select New > Applet. |
| 02:29 | If you do not find the Applet option in this contextual menu, click on Other. |
| 02:35 | Under Categories, select Java. |
| 02:38 | And under File Types, select Applet to create an Applet. |
| 02:43 | Give the Class name as "Sample" and the Package as "org.me.hello". |
| 02:55 | Click Finish. |
| 02:57 | The IDE creates the applet source file in the specified package. |
| 03:02 | You can expand the Source Packages node in the Projects window to see this. |
| 03:08 | The Applet source file opens in the Source editor. |
| 03:12 | Let us now define our applet class. |
| 03:17 | I have the code for a simple applet |
| 03:21 | that sets the background color to cyan, |
| 03:24 | the foreground color to red |
| 03:27 | and displays a message that illustrates the order in which the methods in the applet |
| 03:34 | i.e. the init() method, the start() method, and the paint() methods are called when the applet starts up. |
| 03:43 | I will now copy the entire code on my clipboard and paste it over the existing code in the IDE. |
| 03:54 | Right-Click on the 'Sample.java' file in the Projects window |
| 04:00 | and choose Run File from the contextual menu. |
| 04:04 | The 'Sample.html' launcher file, with the applet embedded, is created in the build folder |
| 04:13 | which you can see in the Files window. |
| 04:15 | Sample dot html file. |
| 04:18 | The Applet is also launched in the Applet viewer |
| 04:23 | with the message displayed across the screen. |
| 04:27 | Let me close the applet viewer. |
| 04:29 | And, let us next embed the Applet in a web-application |
| 04:33 | so that we can make the applet available to the user. |
| 04:37 | To do so, we create a web-application. |
| 04:42 | Under Categories, select java web and under Projects, select Web Application |
| 04:48 | and click Next. |
| 04:50 | We will name our Project as "HelloSampleApplet" and |
| 05:01 | click Next. |
| 05:03 | See if the correct server is selected and click Finish to create your project. |
| 05:12 | Note that when we add the Java project SampleApplet to the web project HelloSampleApplet, |
| 05:20 | we enable the IDE to build the applet whenever we build this web application. |
| 05:26 | Therefore, when we modify the Sample dot java applet , |
| 05:34 | the IDE builds a new version of the applet whenever this is built. |
| 05:40 | Now, in the Projects window, right-click on the HelloSampleApplet project node |
| 05:45 | and click on Properties. |
| 05:49 | Our applet is in a Java project. |
| 05:52 | To add the Jar file, select the Packaging option from the menu on the left side of the window. |
| 05:59 | Click on Add Project and select the java project that contains the Applet class. |
| 06:05 | In this case, it is SampleApplet. |
| 06:09 | Click on Add Project Jar Files. |
| 06:14 | The JAR file containing the applet source file is now listed in the table. |
| 06:20 | Click on OK. |
| 06:24 | And, let us build the HelloSampleApplet project now by right-clicking on it in the Projects window |
| 06:31 | and selecting Clean and Build option. |
| 06:36 | Now, when this project is built, the applets Jar file is generated in the original SampleApplet project. |
| 06:45 | Go to the Files window, expand the HelloSampleApplet project node. |
| 06:51 | Under build and web folder, |
| 06:54 | you can see that the jar file has been added. |
| 06:58 | Now, let us next embed the applet in a HTML file. |
| 07:02 | Go back to the Projects window, right-click on the HelloSampleApplet project node, |
| 07:09 | choose New and select the HTML file option. |
| 07:13 | If you cannot find the HTML option in this contextual menu, |
| 07:18 | click on Other. |
| 07:21 | Select Web under Categories and select HTML under File Types and click Next. |
| 07:29 | Give your Html file a name. |
| 07:32 | I will name the file as "MyApplet" and click on Finish. |
| 07:40 | The next step is to enter the applet tag in between the 'body' tags in MyApplet dot html file. |
| 07:48 | I have the applet code here. |
| 07:51 | Let me copy it onto my clipboard and paste it in between the body tags, in the html file. |
| 08:03 | The next step is to run the html file. |
| 08:07 | Right-click on MyApplet dot html in the Projects window and select Run File. |
| 08:14 | The server deploys the html file in the IDE's default browser. |
| 08:25 | Now, the server has deployed the html file in the IDE's default browser. |
| 08:30 | You can see the message displayed across the screen. |
| 08:36 | Now to the assignment- |
| 08:38 | As your assignment, create another simple banner applet in the IDE |
| 08:43 | where the applet scrolls a message across the applet's window. |
| 08:49 | Embed your applet in a web-application |
| 08:52 | and add JAR files to the web project and |
| 08:56 | finally create and run the HTML file. |
| 09:00 | I have created my own moving banner applet. |
| 09:04 | Let me open the project and run it. |
| 09:18 | You can see that the applet has opened with the message scrolling across the window. |
| 09:28 | Watch the video available at the link shown on the screen. |
| 09:32 | It summarizes the Spoken Tutorial project. |
| 09:36 | If you do not have good bandwidth, you can download and watch the video. |
| 09:41 | The Spoken Tutorial project team: * conducts workshops using Spoken Tutorials. |
| 09:46 | * Gives certificates to those who pass an online test. |
| 09:51 | For more details, please write to:
contact@spoken-tutorial.org |
| 09:58 | Spoken Tutorial project is a part of the Talk to a Teacher project, |
| 10:04 | supported by the National Mission on education through ICT, MHRD, Government of India. |
| 10:11 | More information on this mission is available at:
spoken-tutorial.org/NMEICT-Intro. |
| 10:22 | This tutorial has been contributed by IT for Change. |
| 10:27 | Thank you for joining us. |
