The JWaveExecute class provides client access to a JWAVE wrapper function on the server. Parameters and data that are set with JWaveExecute methods are sent to a JWAVE wrapper function when the execute method is called. The methods getReturnedData, getReturnParams, and getReturnProxy are all used to retrieve data returned from the server. Sometimes it is necessary to cast the returned data to the desired data type. The JWaveConnection class allows you to create and manipulate the JWAVE client-server connection. Client-server connection and JWAVE wrapper errors are handled by a set of JWaveException subclasses.