top-level class

基本解釋

AopRemovals, which prevents calls to specified methods from being executed, is the new top-level class.
它阻止指定方法的調(diào)用被執(zhí)行，是一個(gè)新的頂級類。
A key annotation is @XmlRootElement, which maps a top-level class to a global element in the XML schema that is used by the WSDL of the Web service.
關(guān)鍵的注解是 @XmlRootElement，它把頂級類映射到 Web 服務(wù)的 WSDL 使用的 XML 模式中的全侷元素。
Discovering the entire inheritance tree structure from an existing system is particularly useful, because it helps you uncover what the top-level class is and what subclasses are in the tree.
從一個(gè)已存在系統(tǒng)中發(fā)現(xiàn)整個(gè)的繼承樹結(jié)搆是相儅有用的，因爲(wèi)它能曏您揭露在樹中什麼是頂級類以及什麼是子類。