有了链接资源，您现在可以添加到项目内文件的链接，而不必将相关文件复制到您的工作空间之中。

With linked resources, you can now add links to files inside your project without copying the file into your workspace.

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添加derby jar文件到一个项目的类路径中。

The ability to add the Derby jar files to the class path of a project.

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要添加uml元素到概要文件，在项目浏览器中选择它，并右击，并且点击add UML，如图5所示。

To add UML elements to the profile, select it in the Project Explorer, right-click it, and click add UML, as shown in Figure 5.

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