Normally whats the reason to get java.lang.ClassCastException ..? I get the following error in my application
java.lang.ClassCastException: [Lcom.rsa.authag
@Laurențiu Dascălu's answer explains how / why you get a ClassCastException.
Your exception message looks rather suspicious to me, but it might help you to know that "[Lcom.rsa.authagent.authapi.realmstat.AUTHw" means that the actual type of the object that you were trying to cast was com.rsa.authagent.authapi.realmstat.AUTHw[]; i.e. it was an array object.
Normally, the next steps to solving a problem like this are: