An emerging trend in Social Networking sites and Web portals is the opening up of their APIs to external application develop- ers. For example, the Facebook Platform, Google Gadgets and Yahoo! Widgets allow developers to design their own applications, which can then can be integrated with the platform and shared with other users. However, current APIs are targeted towards develop- ers with programming expertise and database knowledge; they are not accessible to a large class of users who do not have a programming/database background, but would nevertheless like to create new applications. To address this need, we have developed the AppForge system, which provides a WYSIWYG application development platform. Users can graphically specify the components of webpages inside a Web browser, and the corresponding database schema and application logic will be automatically generated on the fly by the system.
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Starting Excel
1. Main Menu: Contains all features in Excel.
2. Tool Bars: Standard Tool Bar and Formatting Tool Bar. These allow you quick access to commonly used tools.
3. Cell: The standard unit you work with in Excel.
4. Worksheet: The workspace of Excel.
5. Task Pane: Shows current options of your currently selected category.
6. Worksheet Tabs: Multiple Worksheets, easily changed by clicking on the tabs.
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This tutorial covers the main packages in the Spring Framework. For full details, we refer you to Rod Johnson’s book, Expert One-on-One J2EE Design and Development, published by Wrox Press in 2002. The book’s ISBN number is 1-86100-784-1. The code for the Spring Framework is contained in package com.interface21. We provide UML diagrams for the subpackages, as well as code samples.
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