Convert HTML to PDF in Java

import com.spire.doc.*;
import java.io.*;

public class htmlStringToWord {

    public static void main(String[] args) throws Exception {

        String inputHtml = "InputHtml.txt";
        //Create a new document
        Document document = new Document();
        //Add a section
        Section sec = document.addSection();

        String htmlText = readTextFromFile(inputHtml);
        //add a paragraph and append html string.
        sec.addParagraph().appendHTML(htmlText);

        //Save to PDF
        document.saveToFile("HTMLstringToPDF.pdf", FileFormat.PDF);
    }
    public static String readTextFromFile(String fileName) throws IOException{
        StringBuffer sb = new StringBuffer();
        BufferedReader br = new BufferedReader(new FileReader(fileName));
        String content = null;
        while ((content = br.readLine()) != null) {
            sb.append(content);
        }
        return sb.toString();
    }
}

import com.spire.doc.*;
import com.spire.doc.documents.XHTMLValidationType;

public class htmlFileToWord {

    public static void main(String[] args) throws Exception {
        // Load the sample HTML file
        Document document = new Document();
        document.loadFromFile("InputHtmlFile.html", FileFormat.Html, XHTMLValidationType.None);

        //Save to file
        document.saveToFile("Result.pdf",FileFormat.PDF);
    }
}