small changes to factory and implemented rmi awareness with a simple register/deregister program

rmi_Awareness/Client.java

@@ -0,0 +1,18 @@
+package rmi_Awareness;
+
+import java.rmi.RemoteException;
+import java.rmi.server.UnicastRemoteObject;
+
+/**
+ * Created by Giovanni on 01/12/2014.
+ */
+public class Client extends UnicastRemoteObject implements call_me_back {
+
+    public Client() throws RemoteException {
+    }
+
+    @Override
+    public void notify(String in) throws RemoteException {
+        System.out.println(in);
+    }
+}