By default, this class loader is the parent of any class loader created by the user.

默认情况下，这个类装入器是用户创建的任何类装入器的父类。

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In J2SE 1.4, the standard versions of these APIs are now in the extensions class path, so these will normally override any implementations present in the user class path.

在J2SE 1.4中，这些API的标准版现在位于扩展的类路径中，所以它们通常将覆盖用户类路径中出现的任何实现。

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OmniFind is a repository that does not have any notion of an item class; instead, it relies on the user to define what properties can be set for a particular item.

OmniFind是一种没有任何项目类概念的存储库，相反，它依靠用户来定义该为某一个项目设置什么样的属性。

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