i am a student of java.and this is my first applet programme to communicate with database.there is some problem. my programme is compiled and successfully run in jbuilder(enter the data and retrieve the data from database). running this programme in appletviewer data is not entering nor retrived and there is exception thrown by this programme (java.security.AccessControlException: access denied (java.lang.RuntimePermission accessClassInPackage.sun.jdbc.odbc) ). running this programme in internet explorer the programme is not enter or retrieve the data from database and also didn't change window please answer my question. i am very thankfull to you.