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J2ME WIRELESS TOOLKIT
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Figure D.2 The KToolBar allows developers to configure, compile, preverify, package, and test MIDP applications.
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on KToolBar will start the application and you should see a window like that depicted in figure D.2. This application allows you to create and configure projects, build or package your applications and run your applications in various emulators. Applications in this instance, as we shall see, mean MIDlet suites. D.3.2 Creating a project Development in the KToolBar is accomplished via a project. A project is a collection of MIDlets in a MIDlet suite. Before writing, packaging or testing any code, the MIDlet code must be established as part of a project. To create a new project, push the New Project button on the top left hand corner of the KToolBar window. A New Project window will display, requesting you to provide a Project Name and MIDlet Class Name (see figure D.3).
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Figure D.3 A new project name and associated first MIDlet are entered in this window that displays after pushing the New Project button on the KToolBar.
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Enter the name of your MIDlet suite in the Project Name field. In the case of our Hello World example, we enter the name SmallWorldSuite. In the MIDlet Class Name field enter the name of the first MIDlet you want to be part of the suite. In this example, our first and only MIDlet will be the HiSmallWorld class. Once you enter these names and press the Create Project button on this window, a Settings for project SmallWorldSuite should display as seen in figure D.4. These are the settings or attributes for our project, MIDlet suite and all the MIDlets in the suite. We discuss these attributes in the next section so don t hit either the OK or Cancel button quite yet. HELLO WORLD PROJECT REVISITED 467
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Figure D.4 When creating a new project, settings for the project, MIDlet suite and associated MIDlets are provided in this window.
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Once the OK button on this window is pushed, a new J2ME Wireless Toolkit project is created. Pay particular attention to the text displayed in the main KToolBar window after a project is created. Move, but do not cancel the Settings window so that you can see the KToolBar window. As in our example shown in figure D.5, the toolkit indicates the directories being used by your new project. In particular, it tells you where to place your MIDlet application code and associated files. We will need this information later so it is a good idea to take note of these directories now.
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Figure D.5 Note the directories that the toolkit specifies for source code, resource and library files. These will be used later on in the application development.
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J2ME WIRELESS TOOLKIT
D.3.3
Editing the project settings The Settings for project SmallWorldSuite window acts as an editor for the attributes found in the MIDlet and MIDlet suite JAD and manifest files. If you push the tabs at the top of this window, you will see the various attributes that can be set for the MIDlet suite or individual MIDlet. For example, if you push on the MIDlets tab, you will see a table listing the MIDlets in our SmallWorldSuite (see figure D.6).
Figure D.6 The MIDlets associated with the project and MIDlet suite are listed in the MIDlets tab on the Settings window.
In our particular case, we do not yet have an icon for our HiSmallWorld MIDlet. So let s change this to indicate that the MIDlet has no icon. Click on the only row in the table and push the Edit button. In the window provided (see figure D.7), remove the SmallWorldSuite.png text that is in the Icon text field and press the OK button. Once you have entered the settings to your liking and push the OK button, the appropriate files (JAD and manifest) are modified by KToolBar and the project is created. After the project has been created, you can return to the project settings by pushing the Settings button on the KToolBar. As can be seen by the Settings window, there are several attributes in the project. Once you have had a chance to get your first MIDlet up and running with the J2ME Wireless Toolkit, we suggest you read the documentation on the tool and play with these attributes. HELLO WORLD PROJECT REVISITED 469
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