Folder folder = store.getFolder("INBOX");
folder.open(Folder.READ_ONLY);
System.out.println(">>>>>>>>>>>>>>>>>");
Folder ff[] = folder.list();
for (int t = 0; t < ff.length; t ++) {
System.out.println(ff[t].getFullName());
}

The above code throws the following exception at folder.list():
javax.mail.MessagingException: not a directory.

Can someone help?