By Colette Burrus, Stephanie Parkin

This advisor to constructing purposes utilizing the WebSphere Studio visible Editor for Java and JavaBeans teaches programmers to construct purposes extra successfully. They examine fundamentals resembling constructing Java applets and purposes, in addition to extra complicated issues, reminiscent of utilizing relational databases and XML files to shop program facts. using WebSphere Studio to construct purposes with JavaBeans is roofed, and the explanations why JavaBeans are so priceless for software programming is defined.

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Extra info for Building Applications with IBM WebSphere Studio and JavaBeans: A Guided Tour (IBM Illustrated Guide series)

Example text

Panel the superclass for your new class. Panel is a container class for other visual elements, so it will hold the visual portion of your subcomponent. 5. 2. 2: Creating the subcomponent class 6. Click Finish. Your new FileManipulationPanel class opens in the Visual Editor. Adding a layout manager and visual beans Layout managers are used to align, space, and size controls placed on an applet, frame, panel, or other container. In the previous chapters, you used a null layout, which meant that the visual components were placed in the container exactly where you dropped them (called absolute positioning).

Also verify that your package and class names are spelled correctly. Java is case sensitive, so make sure upper and lower case letters match exactly. In review In this chapter you learned how to build and run a simple application in WebSphere Studio. You used the Visual Editor to add visual and non-visual beans to your application and to customize the properties of the beans. You learned how to use the ReadFile and WriteFile beans to work with files and how to run your application outside of WebSphere Studio.

2. Set the panel's layout property to GridBagLayout. When you add beans to the panel, GridBagLayout groups the beans in the center of the panel. 3. Select a Button bean from the palette of AWT Controls, and drop it on the panel. 4. Set the button's label property to Load. Notice that the button is automatically resized to match the length of the string used for the label. 5. Click on the + sign next to the button's constraint property, and set the constraint-insets property to 3,3,3,3. The insets constraint is padding outside the bean, like margins, specified in pixels.

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