w:t not an instance of org.docx4j.wml.Text?

Question

I want to extract all bold text from a DOCX file using docx4j but I get a class cast exception with this code:

import java.util.List;
import javax.xml.bind.JAXBException;
import org.docx4j.Docx4J;
import org.docx4j.openpackaging.exceptions.Docx4JException;
import org.docx4j.wml.Text;

public class Main
{
    public static void main(String[] args) throws Docx4JException, JAXBException
    {
        var wordMLPackage = Docx4J.load(new java.io.File("input.docx"));
        var doc = wordMLPackage.getMainDocumentPart();
        System.out.println((Text)doc.getJAXBNodesViaXPath("//w:r[w:rPr/w:b]/w:t", false).get(0));
    }
}

The error is:

Exception in thread "main" java.lang.ClassCastException: class javax.xml.bind.JAXBElement cannot be cast to class org.docx4j.wml.Text (javax.xml.bind.JAXBElement and org.docx4j.wml.Text are in unnamed module of loader 'app') at Main.main(Main.java:37)

Why is an occurence "w:t" not an instance of org.docx4j.wml.Text and how I get the text instead?

Answer 1

Apparently the way I tried it only works with the R (run) element, text nodes seem to be nested further. I could extract the text as follows:

System.out.println( ((JAXBElement<Text>)doc.getJAXBNodesViaXPath("//w:r[w:rPr/w:b]/w:t", false) .get(0)).getValue().getValue());