#fixed code
                                public void testXhtmlParsing() throws Exception {
        String path = "/test-documents/testXHTML.html";
        Metadata metadata = new Metadata();
        String content = Tika.parseToString(
                HtmlParserTest.class.getResourceAsStream(path), metadata);

        assertEquals("application/xhtml+xml", metadata.get(Metadata.CONTENT_TYPE));
        assertEquals("XHTML test document", metadata.get(Metadata.TITLE));

        assertEquals("Tika Developers", metadata.get("Author"));
        assertEquals("5", metadata.get("refresh"));
        assertTrue(content.contains("ability of Apache Tika"));
        assertTrue(content.contains("extract content"));
        assertTrue(content.contains("an XHTML document"));
    }
#vulnerable code 
                                public void testXhtmlParsing() throws Exception {
        Parser parser = new AutoDetectParser(); // Should auto-detect!
        ContentHandler handler = new BodyContentHandler();
        Metadata metadata = new Metadata();

        InputStream stream = HtmlParserTest.class.getResourceAsStream(
                "/test-documents/testXHTML.html");
        try {
            parser.parse(stream, handler, metadata);
        } finally {
            stream.close();
        }

        assertEquals("application/xhtml+xml", metadata.get(Metadata.CONTENT_TYPE));
        assertEquals("XHTML test document", metadata.get(Metadata.TITLE));
        String content = handler.toString();
        assertEquals("Tika Developers", metadata.get("Author"));
        assertEquals("5", metadata.get("refresh"));
        assertTrue(content.contains("ability of Apache Tika"));
        assertTrue(content.contains("extract content"));
        assertTrue(content.contains("an XHTML document"));
    } 
                            #location 9 
                            #vulnerability type NULL_DEREFERENCE