File Filter for a Jlist

Question

I'm new to filtereing, ive been looking on site and this one, but can't quite get round the filtering process.
Most filter examples I've seen are for Filechooser, but this program is a Jlist.
I wish to show only one file type, namely an AVI format.
Can anyone help
import javax.swing.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.io.File;
import java.io.FileFilter;
class Test2 extends JFrame
  DefaultListModel dim = new DefaultListModel();
  JList list = new JList(dim);
  private FileFilter fileFilter;
  public Test2()
    setLocation(200,100);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    JScrollPane sp = new JScrollPane(list);
    sp.setPreferredSize(new Dimension(150,200));
    FNameFilter filter = new FNameFilter();
    File directory = new File(".");
    File[] files = directory.listFiles(filter);
    for(int x = 0; x < files.length; x++)
        if(files[x].isFile()) dim.addElement(files[x].getName().toLowerCase().endsWith("txt"));
    JPanel panel = new JPanel();
    JButton btn = new JButton("Delete File");
    panel.add(btn);
    getContentPane().add(sp,BorderLayout.CENTER);
    getContentPane().add(panel,BorderLayout.SOUTH);
    pack();
    btn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent ae){
        int selectedIndex = list.getSelectedIndex();
        if(selectedIndex < 0)
          JOptionPane.showMessageDialog(null,"Please select file to delete");
        else
          File fileToDelete = new File((String)list.getSelectedValue());
          if(fileToDelete.delete()) dim.removeElementAt(selectedIndex);
   public static void main(String[] args){new Test().setVisible(true);}
}

Answer 1

I tried FileFilter, but the system wouldn'y excpt
that.
Would it be directly related to the file only.Just how did you try "FileFilter"? You know that you have to implement one first, don't you?