Problem in uploading (at run time)

I'm using com.oreilly package to upload file in servlet.

when I compile the file it gives no error but when I call the servlet through it gives the error "NoClassDefFoundError :javax/servlet/ServletRequest at com.oreilly.servlet.MultipartRequest. I wonder if my own class "UploadTest" can approach ServletRequest object then why not MultipartRequest.

would anyone help me in this regard.thanks

[420 byte] By [ijaz_m] at [2007-9-26 1:25:55]