JFileChooser problem opening just java files

Question

Hi everyone, trying to write simple text ed. that will only open java files (part of JFileChooser). Yes have looked at API but so stupid that i couldnt get it to work can anyone help?
public void openFile() {
          BufferedReader in = null;
          try {
               JFileChooser chooser = new JFileChooser();
               //---Open Java Files only---
               if (chooser.showOpenDialog(null)
               == JFileChooser.APPROVE_OPTION) {
               File selectedFile = chooser.getSelectedFile();          
               in = new BufferedReader
                         (new FileReader(selectedFile));
     catch(FileNotFoundException e) {
          JOptionPane.showMessageDialog
               (null, "Bad Filename. Try Again");
     catch(IOException e) {
          JOptionPane.showMessageDialog
               (null, "Corrupted File. Try Again");
     finally {
          if (in != null)
               try {
                    StringBuffer buffer = new StringBuffer();
                    String text = new String();
                    text_chat.setText(text + "\n\n");
                    while((text=in.readLine())!=null)
                         buffer.append(text+ "\n");
                    text_chat.setText(buffer.toString());
               catch(IOException e) {
                    JOptionPane.showMessageDialog
                         (null, "Error closing File.");
}

Answer 1

Can you tell me how did you solve the problem? Right now I am encounter ing the same problem. The java files on JFileChooser did not show up!