started task 7

week3_TinsaeGhilay/Task 4/src/client/Client.java

@@ -0,0 +1,44 @@
+package client;
+
+// Client/Client.java class represents the client that has to relay on the Hello engine
+// to perform tasks remotely.
+// it needs the Hello interface from Hello package
+import compute.Compute;
+
+// it also needs those to access the registry,
+// so it can get remote object reference of the server
+import java.rmi.registry.LocateRegistry;
+import java.rmi.registry.Registry;
+import java.util.Scanner;
+
+public class Client {
+    private Client() {
+    }
+
+    public static void main(String[] args) {
+
+        // normally, the address of the server is passed here on the command line as an
+        // argument
+        // we get that address from args[0] if provided, else we use null for localhost
+        String host = (args.length < 1) ? null : args[0];
+
+        try (Scanner scanner = new Scanner(System.in);) {
+
+            // get the registry from host(server)
+            Registry registry = LocateRegistry.getRegistry(host);
+
+            // look up the remote object by name in the registry
+            // stub is the a reference to the remote object
+            Compute stub = (Compute) registry.lookup(Compute.SERVICE_NAME);
+            boolean isAuthenticated = stub.authenticate();
+            if (isAuthenticated) {
+                System.out.println("Client authenticated successfully. Door opens.");
+            } else {
+                System.out.println("Client authentication failed. Door remains closed.");
+            }
+
+        } catch (Exception e) {
+            System.err.println("Client exception: " + e.getMessage());
+        }
+    }
+}