評估 XML 文件中的 NodeList

給出以下 XML 文件：

<documentation>
    <tags>
        <tag name="Java">
            <topic name="Regular expressions">
                <example>Matching groups</example>
                <example>Escaping metacharacters</example>
            </topic>
            <topic name="Arrays">
                <example>Looping over arrays</example>
                <example>Converting an array to a list</example>
            </topic>
        </tag>
        <tag name="Android">
            <topic name="Building Android projects">
                <example>Building an Android application using Gradle</example>
                <example>Building an Android application using Maven</example>
            </topic>
            <topic name="Layout resources">
                <example>Including layout resources</example>
                <example>Supporting multiple device screens</example>
            </topic>
        </tag>
    </tags>
</documentation>

以下內容檢索 Java 標記的所有 example 節點（如果僅在 XML 中評估 XPath，請使用此方法。請參閱其他示例，瞭解在同一 XML 檔案中評估多個 XPath 呼叫的時間。）：

XPathFactory xPathFactory = XPathFactory.newInstance();
XPath xPath = xPathFactory.newXPath(); //Make new XPath
InputSource inputSource = new InputSource("path/to/xml.xml"); //Specify XML file path

NodeList javaExampleNodes = (NodeList) xPath.evaluate("/documentation/tags/tag[@name='Java']//example", inputSource, XPathConstants.NODESET); //Evaluate the XPath
...