Why doesn't read the RTF file?

Question

Hello,
Could anyone tell me what is the problem with the following code. It would
read an 'rtf' file but it doesn't.
import javax.swing.*;
import javax.swing.text.*;
import javax.swing.text.rtf.*;
import java.io.*;
import java.awt.event.*;
public class Rtf extends JFrame {
String filein = System.getProperty("user.dir")
+ System.getProperty("file.separator")
+ "BG.rtf";
public Rtf() {
     RTFEditorKit rtfKit = new RTFEditorKit();
     DefaultStyledDocument doc = new DefaultStyledDocument();
     try {
          rtfKit.read( new FileInputStream( filein ), doc, 0 );
     } catch(Exception e) {
          System.out.println("Read error: " + e);
     System.out.println("doc.getLength: " + doc.getLength());
public static void main(String[] args) {
JFrame frame = new Rtf();
During the execution the following lines are the result:
Read error: java.lang.NullPointerException
doc.getLength: 0
Press any key to continue...
Thank you in advance.

Answer 1

If your rtf is made in word 2000 or newer version, rtf kit cannot read it and return null pointer statement