How to use FileFilter in JChooser

Question

Hello
All i want to do is something simple like
having only txt files to show up in the dialog file list.
but am stuck with this error
{color:#ff0000}Cannot instantiate the type FileFilter{color}
any help will be much appreciated
thanks
package stage04;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.Date;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;
import javax.swing.filechooser.FileView;
import stage02.Item;
import stage02.CD;
import stage02.DVD;
import java.util.ArrayList;
import stage03.ItemController;
import java.text.*;
import java.util.NoSuchElementException;
public class MainGui implements ActionListener {
  public void openFile(){
  JFileChooser fc = new JFileChooser(".");
  FileFilter ff = new FileFilter();
  ff.addExtension("txt");
  fc.setFileFilter(ff);
  fc.showDialog(fc,"Open");
}

Answer 1

That code won't compile.
I suggest you get rid of the ActionListener stuff since you haven't implemented that yet (and it has nothing to do with your current problem). And that you replace those imports with statements improting each of the classes you actualy use.
FileFilter - the one you mean - is an abstract class. There's an example of its usage at the start of the JFileChooser documentation. The Tutorial page linked to from there will also be useful.