Created attachment 28029 [details]
Test document that causes the crash

I have just started using POI and I am trying to set the font family for a XWPFRun using XWPFRun#setFontFamily() but it always crashes with a NullPointerException.  I have tried this with POI versions 3.7 and 3.8 Beta 4 with the same results.

The font exists and the run's text is not null so why would this fail?  I cannot locate the source in question but the actual exception is:

java.lang.NullPointerException
                at org.apache.poi.xwpf.usermodel.XWPFRun.setFontFamily(XWPFRun.java:465)

Does anyone know how I can get around this?  Calling XWPFRun#getFontFamily() immediately before trying to set it returns null but I wouldn't have thought that would matter.

Thanks,

-jct

Here is the code for a test case to use with the attached document:

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Iterator;

import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;

public class RunTest {

	private static final String INPUT_FILE_NAME = "C:\\input.docx";
	private static final String OUTPUT_FILE_NAME = "C:\\output.docx";

	public static void main(final String[] args) {
		try {
			final XWPFDocument doc = new XWPFDocument(new FileInputStream(INPUT_FILE_NAME));
			final Iterator<XWPFParagraph> paragraphs = doc.getParagraphsIterator();
			while (paragraphs.hasNext()) {
				final XWPFParagraph paragraph = paragraphs.next();
				for (final XWPFRun run : paragraph.getRuns()) {
					if (run != null) {
						final String text = run.getText(0);
						if (text != null) {
							run.setFontFamily("Times New Roman");
						}
					}
				}
			}
			doc.write(new FileOutputStream(OUTPUT_FILE_NAME));
		} catch (final Exception e) {
			e.printStackTrace();
		}
	}
}