准备环境以及范例源代码。

Prepare the environment and the sample source code.

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为了对转换前后的代码不同有一个总体了解，我们提供了两种WorldClock portlet的范例源代码。

For a better overview about the code differences that result from this conversion, we provide sample source code of both WorldClock portlets.

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此案例研究包括许多工作产品范例，从业务用例到源代码，以整个项目生命周期的不同完成状态进行显示，如表2所示。

The case study includes numerous work product examples, from business case to source code, shown at different completion states over the project lifecycle, as illustrated in Table 2.

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