Boost performance JAVA EJB

Using EJB (entity java beans) for enterprise client server application may be a good idea.

but it is highly important to divide your code into many EJB's as you can , for each EJB class being responsible for its logical functionality.  

But doing the above can result in a performance issue , because jumping and calling many time to the EJB server from the client code takes time.

for example having this EJB:

@remote

MyEjb

..

..

public List<Object> getObject1()

{

return new ArrayList<Object>();

}

public List<Object> getObject1()

{

return new ArrayList<Object>();

}

Client code:

public static void main (String []args)

{

List<Object> list1 = MyEjb.getObject1();

List<Object> list2 = MyEjb.getObject1();

}

we have here 2 calling and to the EJB server. which takes time....

and time is something that we want to save.

A Much better option would be:

@remote

MyEjb

..

..

public Pair<List<Object>,List<Object>> getObjects()

{

return new Pair<List<Object>,List<Object>>( new ArrayList<Object>,  new ArrayList<Object>);

}

Client code:

public static void main (String []args)

{

Pair pair = MyEjb.getObjects();

//and then retrieve the data from the pair.

}

this is a better option!!

*please note: this is a sample code , calling the EJB server must be done via the interface.