Can jsoup be used to parse XML documents?

Yes, jsoup can be used to parse XML documents. Jsoup is a Java library primarily designed for parsing, extracting, and manipulating HTML, but it can also be used to parse XML. The library provides a very convenient API for fetching and manipulating data, using the best of DOM, CSS, and jquery-like methods.

To parse an XML document with jsoup, you can use the Jsoup.parse method with an InputStream, a File, or a String. You need to specify that the document being parsed is XML by using the Parser.xmlParser() method as a parser argument.

Here's a basic example of how to parse an XML document with jsoup:

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.parser.Parser;
import org.jsoup.select.Elements;

public class JsoupXMLParsingExample {
    public static void main(String[] args) {
        String xml = "<root><element key='value'>Text content</element></root>";

        Document doc = Jsoup.parse(xml, "", Parser.xmlParser());
        Elements elements = doc.select("element");

        System.out.println(elements.attr("key")); // prints "value"
        System.out.println(elements.text()); // prints "Text content"
    }
}

This example shows how to parse a simple XML string. The Parser.xmlParser() method tells jsoup to use the XML parser, which ensures that XML-specific parsing rules are applied (for example, preserving case sensitivity of tags).

If you have an XML file you want to parse, you can read it into a String or use an InputStream and parse it similarly:

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.parser.Parser;
import java.io.File;
import java.io.IOException;

public class JsoupXMLFileParsingExample {
    public static void main(String[] args) {
        File input = new File("path/to/your/xmlfile.xml");

        try {
            Document doc = Jsoup.parse(input, "UTF-8", "", Parser.xmlParser());
            // Use the document as needed...
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Remember that while jsoup can parse XML, it is not a full-fledged XML parser with all the features that might be found in libraries specifically designed for XML, such as support for XML Namespaces, XPath expressions, or XSLT transformations. For those advanced XML parsing and manipulation needs, you might want to use libraries like JDOM, DOM4J, or Java's built-in javax.xml.parsers.DocumentBuilderFactory.