import java.awt.event.*;
import java.io.File;
import javax.swing.filechooser.FileFilter;

class PicsFileFilter extends FileFilter
{
    String ext;
    
    public PicsFileFilter(String ext)
    {
        this.ext = ext;
    }
    
    public boolean accept(File file)
    {
        if (file.isDirectory())
            return true;
        
        String fileName = file.getName();
        int index = fileName.lastIndexOf('.');

        if (index > 0 && index < fileName.length()-1) {
            //