Не читаются некоторые doc-файлы

import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.extractor.WordExtractor;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
//вывод
class TestDoc {
 
    public static void main(String[] args) throws IOException {
        String[] file = TestDoc.ScanDoc("C://Thh.doc");
        String word = "- Present";
        for (String str : file) {
            if (str.toLowerCase().contains(word.toLowerCase())) {
            System.out.println(1 + ": " + word);
                }
            Pattern patter = Pattern.compile("([-|–|—]\\s*(Present))");
            Matcher matcher = patter.matcher(str);
            if (matcher.find()) {
                System.out.println(2 +": " + matcher.group());
            }
 
            Pattern patter2 = Pattern.compile("Present");
            Matcher matcher2 = patter2.matcher(str);
            if (matcher2.find()) {
                System.out.println(3 +": " + matcher2.group());
            }
        }
 
    }
 
    static String[] ScanDoc(String path) throws IOException {
        File file;
        WordExtractor extractor;
        String[] fileData = null;
        try {
            file = new File(path);
            FileInputStream fis = new FileInputStream(file);
            HWPFDocument document = new HWPFDocument(fis);
            extractor = new WordExtractor(document);
            fileData = extractor.getParagraphText();
        } catch (Exception ignored) {
        }
        return fileData;
    }
 
 
}

static String[] ScanDoc(String path) throws IOException

Exception in thread "main" java.lang.NullPointerException
    at main.TestDoc.main(TestDoc.java:18)
 
Process finished with exit code 1