Receiving Objects of different classes??

Question

Hi,
i have a little question...I know how to receive an ObjectMessage in JMS and how to retrieve the object from the message, but so far the message receiver knew what Object it is about to receive..and hence I used a cast like this:
Person p = (Person) objectmessage.getObject();
Now, I want, that the receiver does not know in advance what object it is about to receive....Does anybody have a good Idea??...Can I use something like this??
if (objectmessage.getClass().getName.equals("de.bla.Person"))
Person p = (Person) objectmessage.getObject();
Is this a good idea??...Ok. thanks...

Answer 1

it's probably better if you use an overloaded type and send this as the payload of your ObjectMessage.
e.g., inheritance relationships:
A <- B
A <- C <- D
Then you send and receive Objects of type A. There could be an overloaded method m (with different implementations according to which actual class the received object has). Like this you don't need explicit casts or class checks and let the JVM do the runtime type checking more efficiently and more object-oriented.