JTidy java API toConvert HTML to XHTML

Question

I am using JTidy to convert from HTML to XHTML but I found in my XHTML file this tag  . Can i prevent it ?
this is my code

    //from html to xhtml
   try   
    {  
        fis = new FileInputStream(htmlFileName);  
    }  
    catch (java.io.FileNotFoundException e)   
    {  
        System.out.println("File not found: " + htmlFileName);  
    }  
        Tidy tidy = new Tidy(); 
        tidy.setShowWarnings(false);
        tidy.setXmlTags(false);
        tidy.setInputEncoding("UTF-8");
        tidy.setOutputEncoding("UTF-8");
        tidy.setXHTML(true);// 
        tidy.setMakeClean(true);
        Document xmlDoc = tidy.parseDOM(fis, null);  
    try  
    {  
        tidy.pprint(xmlDoc,new FileOutputStream("c.xhtml"));  
    }  
    catch(Exception e)  
    {  
    }

Answer 1

I had only success, when the input is treated as XML as well. So either set xmltags to true

 tidy.setXmlTags(true);

and live with the errors and warnings or do the conversion twice. First conversion to sanitize the html (html to xhtml) and a second conversion from xhtml to xhtml with set xmltags, thus no errors and warnings occur.

        String htmlFileName = "test.html";
    try( InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream(htmlFileName);
         FileOutputStream fos = new FileOutputStream("tmp.xhtml");) {
        Tidy tidy = new Tidy();
        tidy.setShowWarnings(true);
        tidy.setInputEncoding("UTF-8");
        tidy.setOutputEncoding("UTF-8");
        tidy.setXHTML(true);
        tidy.setMakeClean(true);
        Document xmlDoc = tidy.parseDOM(in, fos);
    } catch (Exception e) {
        e.printStackTrace();
    }

    try( InputStream in = new FileInputStream("tmp.xhtml");
         FileOutputStream fos = new FileOutputStream("c.xhtml");) {
        Tidy tidy = new Tidy();
        tidy.setShowWarnings(true);
        tidy.setXmlTags(true);
        tidy.setInputEncoding("UTF-8");
        tidy.setOutputEncoding("UTF-8");
        tidy.setXHTML(true);
        tidy.setMakeClean(true);
        Document xmlDoc = tidy.parseDOM(in, null);
        tidy.pprint(xmlDoc, fos);
    } catch (Exception e) {
        e.printStackTrace();
    }

I used the latest jtidy version 938.