We could optimize, but the application would be at least an order of magnitude slower. Memory use would also skyrocket, as so many classes are created.
我们可以做优化，但应用程序的速度将会变慢至少一个数量级，内存的使用也会扶摇直上，因为有这么多的类被创建。
In this example, a student will use the train (each depicted by separate classes) in order to go to school.
这个例子中，学生将乘坐火车(每部分都由单独的类描述)上学。
In all of the above examples, the EJB components have to import vendor-specific implementation classes in order to use the connection pooling facilities of the resource.
在以上所有示例中，EJB组件必须导入特定于供应商的实现类，以使用资源的连接合用设施。
With Web services however, you use WSDL, so the clients are able to create their own client invocation code and need no server classes on the local classpath in order to perform an invocation.
无论如何，和Web服务一起您将使用WSDL，所以客户端能够构造它们自己的客户端调用代码，在本地类路径上不需要服务器的类来执行调用。
You will need to download the Bouncy Castle classes (see Resources for a link) in order to use this article's sample code in accordance with its accompanying setup instructions.
您将需要下载BouncyCastle类（链接请参阅 参考资料）并遵照它所附带的设置指示才能使用本文的示例代码。
The Access class USES each of the helper classes in order to accomplish it's goal (characterized by the UML use dependency relationship diagrams, which look like partially lined arrows).
访问类使用每一个帮助类，用于完成它的目标(被uml使用依赖联系图特征化，其看起来像线状箭头)。
In order to make themes and skins work smoothly, portlet programmers use globally defined standardized CSS style classes, such as those defined in JSR 168 and WSRP, within their implementations.
为了使主题和外观顺利地工作，Portlet编程人员在其实现中使用了全局定义的标准化css样式类，例如在JSR 168和WSRP中定义的css样式类。
All school facilities are good, many of which are multimedia classes, and now we have made use of the weekend for a higher level of training, in order to be able to do better courseware.
各个学校设备都不错，很多都用多媒体上课，现在我们都利用周末时间进行更高层次的训练，为了以后能更好地做课件等。
All school facilities are good, many of which are multimedia classes, and now we have made use of the weekend for a higher level of training, in order to be able to do better courseware.
各个学校设备都不错，很多都用多媒体上课，现在我们都利用周末时间进行更高层次的训练，为了以后能更好地做课件等。
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