@Override
	public int compare(File f1, File f2) {
		if(f1.isFile() && f2.isFile()) {
			String one = f1.getName();
			String two = f2.getName();
			
			one = one.replaceAll("[^0-9]", "");
			two = two.replaceAll("[^0-9]", "");
			
			try {
				
				return Integer.parseInt(one) - Integer.parseInt(two);
				
			} catch(Exception e) {
				
			}
		}
		return 0;
	}