I try to make the class a member of a package, and then import the entire package, actually I've put the class("FileListFilter") inside an existing example package("num"), it works fine when I import the package using <%@ page import="num.*"%>, however it fails when I try to call FileListFilter within the jsp!!
And for placing the file in WEB-INF/classes, there's no directory as "classes" in JSWDK, does it mean that I have to add it by myself?? And in fact I try to add the directory "classes" under WEB-INF, and put my classes inside it.. but it still fails when I import the package by using <%@ page import="FileListFilter"%>.
Thanks so much for your help!!!