Thread: JAVA RMI question

I am a newbie to RMI.

From the client side, calling Remote method and passing hashmap of keys and values are null. I want the server to fill the values for each key. is that possible.


Map<String, Object> mapObj = new HashMap<String, Object>();
in a loop, I just fill the keys (string of the mapObject) and values as null.
remoteObjectIF.callMethod(mapObj)

mapObj.get("key1") gives me null. the server side logging gives the whatever object i am filling.

can We pass hashmap to server and have it filled and clien access the same hashmap?


the objects in hashmap are serializable.

Please explain.

yes. i realised that it is between 2 jvms.

when I explicitly return the structure back again, the client received the values.

yes i changed my code on the Remote method to return the map;

Map<String, Object> mapObj = new HashMap<String, Object>();

mapObj = remoteObjectIF.callMethod(mapObj);

in the remote method it returns as shown below..

map<string, Object> callMethod(Map<string, Object> m_map){

map<string, Object> localmap;

fill m_map objects

result = m_map;

retrun result;

}

I am getting java outofmemory: java heap space exception when deserializing.
the returned object is bigger. how to handle this situation?