Converts HTML FILE to PPT | Java Example

import java.io.*;
import org.apache.poi.hslf.HSLFSlideShow;
import org.apache.poi.hslf.HSLFSlideShow;
import org.apache.poi.hslf.model.Slide;
import org.apache.poi.hslf.usermodel.*;
import org.apache.poi.hslf.model.TextBox;

public class ReadHTML{
 public static void main(String[]args){
  try{
   File file = new File("Hello.html");
   FileInputStream fis = null;
   BufferedInputStream bis = null;
   DataInputStream dis = null;
   fis = new FileInputStream(file);
   bis = new BufferedInputStream(fis);
   dis = new DataInputStream(bis);
   String st="";
   while (dis.available() != 0) {
    st+=dis.readLine().toString()+"\n";
   }
   System.out.println(st);
   SlideShow slideShow = new SlideShow();
   Slide slide = slideShow.createSlide();
   TextBox txt = new TextBox();
   txt.setText(st+" ");
   slide.addShape(txt);
   FileOutputStream out = new FileOutputStream("Hello.ppt");
   slideShow.write(out);
   out.close();
   bis.close();
   dis.close();
  }
  catch(Exception e){}
 }
}