Commons.net.ftp.FTPClient.listFiles() and file names with 'é'

[Millet Regis]

Hello!
I have a problem with the file with accents

I have one named "blé.txt", but in the filenames list, it is renamed in 
"bl?.txt"  (i cannot copy-paste the correct symbol, so i put a ? Instead)
 

Here is my source code, where oFTPClient is a FTPClientInstance, connected to 
my FTP repository


        HashSet oHashSet_Reponse = new HashSet();
        FTPFile[] oFTPFiles = oFTPClient.listFiles();
        for (int i =0;i<oFTPFiles.length;i++) {
          if (oFTPFiles[i].isFile()) {
            oHashSet_Reponse.add(oFTPFiles[i].getName());
          }
        }
        return oHashSet_Reponse;


Could anyone help me to find how to make the filename good?
I think it's a character encoding problem. My JRE runs under UTF-8.