Define a class whose instances represent remote object references. It should contain information and should provide access methods needed by the request- reply protocol. Explain how each of the access methods will be used by that protocol. Give a justification for the type chosen for the instance variable containing information about the interface of the remote object.

Question

What will be an ideal response?

Answer 1

```
class RemoteObjectReference{
private InetAddress ipAddress;
private int port;
private int time;
private int objectNumber;
private Class interface;
public InetAddress getIPaddress() ( return ipAddress;}
public int getPort() { return port;);
}
```
The server looks up the client port and IP address before sending a reply.

The variable interface is used to recognize the class of a remote object when the reference is passed as an argument or result. explains that proxies are created for communication with remote objects. A proxy needs to implement the remote interface. If the proxy name is constructed by adding a standard suffix to the interface name and all we need to do is to construct a proxy from a class already available, then its string name is sufficient. However, if we want to use reflection to construct a proxy, an instance of Class would be needed. CORBA uses a third alternative.