#7 help with wap push

[Student]

Hi,

I wanna use the smsj API for sending a wap push (service indication) message.

I am using tha package org.marre with the SmsSender class.

I have an account in clickatell, so I'm using the method

getClickatellSender(java.lang.String username,
java.lang.String password, java.lang.String apiid)

then I got an object of the class SmsSender. After I use the method

sendWapSiPushMsg(java.lang.String url, java.lang.String
text, java.lang.String dest)

I can compile my java application, but when I execute it, I got the folloiwng Error:

Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/Logger Factory

I'm not sure what's wrong, I am executing it from a host with Internet access, not from a server. is it the reason?

Please help me!