Thread: Why FilenameFilter is never working?

While coding in Java, I did many programs with GUI at which I needed to save something to a file. I usually use FileDialog to save something. Sometimes I wanted to filter the names of files that I wanted to see, so I tried to use FilenameFilter. But I never managed to make it working. Usually, I do like that:

package mainPack;
 
import java.awt.*;
import java.awt.event.*;
import java .io .*;
 
public class FerPrinc1 extends Frame implements ActionListener {
 
	public static void main(String[] args) {
		FerPrinc1 f1 = new FerPrinc1("Testare");
		f1.show();
	}
 
 
	FerPrinc1(String  titlu)
	{
		super(titlu);
		this.addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				dispose();
			}
 
		});
		Button b1 = new Button ("Alege fisier");
		add(b1, BorderLayout.CENTER);
		pack();
		b1.addActionListener(this);
	}
 
 
 
 
 
 
	public void actionPerformed(ActionEvent e) {
		FileDialog fd = new FileDialog(this, "Alege fisier", FileDialog.LOAD);
 
		fd.setFilenameFilter(new FilenameFilter()
		{
 
			@Override
			public boolean accept(File dir, String numeFis) {
 
				return (numeFis.endsWith(".txt"));
			}
 
		});
		fd.show();
		setTitle("Fisierul ales este"+fd.getFile());
 
	}
 
 
 
 
}

The piece of code with the FilenameFilter is this one:

fd.setFilenameFilter(new FilenameFilter()
{

@Override
public boolean accept(File dir, String numeFis) {

return (numeFis.endsWith(".txt"));
}

});

As I told you, I never seen this working. Any clue what I am doing wrong? Is it any problems with using this on windows 8? Or what ?

By not working I mean for example if i set the Loading FilenameFilter with ".txt", it will not show only .txt files as I wanted, it still shows all files in the folder!!!