Re: List of files with given extension in a directory

in a user chosen directory. The user chooses a directory with a
JFileChooser or something like that and all entries of a certain file
type in there are showed in a drop down list. It seems to be
straightforward to me.

First you define a FilenameFilter :

import java.io.File;
import java.io.FilenameFilter;

public class ExtensionFilter implements FilenameFilter {
 protected String pattern;
 public Filter (String str) {
   pattern = str;
 }

 public boolean accept (File dir, String name) {
   return name.toLowerCase().endsWith(pattern.toLowerCase());
 }
}