package jp.sourceforge.qrcode.example.jmf;   import java.io.File;   import javax.swing.*;   import javax.swing.filechooser.*;   /* ImageFilter.java is a 1.4 example used by FileChooserDemo2.java. */   public class MOVFilter extends FileFilter {       public boolean accept(File f) {           if (f.isDirectory()) {               return true;           }           String extension = MOVFilter.getExtension(f);           if (extension != null) {               if (extension.equalsIgnoreCase("MOV")) {                       return true;               } else {                   return false;               }           }           return false;       }       //The description of this filter       public String getDescription() {           return "QuickTime Movies";       }              public static String getExtension(File f) {           String ext = null;           String s = f.getName();           int i = s.lastIndexOf('.');           if (i > 0 &&  i < s.length() - 1) {               ext = s.substring(i+1).toLowerCase();           }           return ext;       }   }