 all of them will have to be loaded in main memory. It can cause space exhaustion.
To prevent this situation you should avoid to store in variables references to container objects which 
contain references to a large number of members. Especially it is true for storage root object.
In this case GC is able to do it work and throw out from the memory objects which are not used 
at this moment (to which there are no references from local variable). 
But it is important to say that objects accessible though the