Cannot bring all the element from html to docx that have same tag with java -

i have project converting html docx java, in html document have 2 paragraph 2 header title, when converting both of them docx format, 1 paragraph converted, other paragraph doesn't converted have same tag. image below

and code this

import java.io.file; import java.io.fileoutputstream; import java.util.list; import java.util.set; import static org.apache.poi.hslf.model.textproperties.textpropcollection.textproptype.paragraph; import org.apache.poi.openxml4j.opc.opcpackage; import org.apache.poi.xwpf.usermodel.verticalalign; import org.apache.poi.xwpf.usermodel.xwpfdocument; import org.apache.poi.xwpf.usermodel.xwpfparagraph; import org.apache.poi.xwpf.usermodel.xwpfrun; import org.zwobble.mammoth.documentconverter; import org.zwobble.mammoth.result;  /**  *  * @author alwan  */  public class testword {      /**      * @param args command line arguments      */     public static void main(string[] args) {         // todo code application logic here         try         {             file file = new file("src/test/test.docx");             documentconverter converter = new documentconverter();             result<string> result = converter.extractrawtext(file);             string html = result.getvalue(); // generated html             set<string> warnings = result.getwarnings(); // warnings during conversion              string[] part = html.split("<p>");             string[] part2 = html.split("<h1>");              fileoutputstream out = new fileoutputstream(new file("testformat.docx"));             xwpfdocument doc = new xwpfdocument();             xwpfparagraph paragraph = doc.createparagraph();              xwpfrun paragraphonerunone = paragraph.createrun();                          xwpfrun paragraphonerunthree = paragraph.createrun();                          (int = 0; < html.length(); i++)              {             if (i % 2 != 0)              {                           paragraphonerunone.setbold(true);                 paragraphonerunone.setitalic(true);                 paragraphonerunone.settext(part[i].trim());                 paragraphonerunone.addbreak();                  paragraphonerunthree.setstrike(true);                 paragraphonerunthree.setfontsize(20);                 paragraphonerunthree.setsubscript(verticalalign.subscript);                 paragraphonerunthree.settext(part2[i].trim());                  system.out.println(part2[i].trim());                 system.out.println(part[i].trim());                      doc.write(out);                     out.close();             }               system.out.println("testformat.docx written successully");             }             system.out.println("success");         } catch(exception e) {             e.printstacktrace();         }       }  } 

the question is, how bring paragraph html docx format when have same tag? thank attention before. sorry bad english