Object References

First, remember the difference between objects and classes! An object does not contain the methods.
We can send an object by using the Serializable interface and writing it on a socket. Easy!
But, an object reference somehow needs to point back to the machine:object so that a method call on that object reference will call the appropriate machine.
We can achieve this by building an object lookup table on the client.

Object	Machine	Obj ID		Obj ID	Object
Client				m.sc.edu (Server)
o	m.sc.edu	101	—new o()→ ←m.sc.edu:01— —101:calc()→	101	o