diff --git a/cs656/lab4/PresenceServiceImpl.java b/cs656/lab4/PresenceServiceImpl.java
index 414a272..e6b0c87 100644
--- a/cs656/lab4/PresenceServiceImpl.java
+++ b/cs656/lab4/PresenceServiceImpl.java
@@ -21,7 +21,7 @@ public class PresenceServiceImpl implements PresenceService
      * Register a client with the presence service.
      * @param reg The information that is to be registered about a client.
      */
-    void register(RegistrationInfo reg) throws Exception
+    public void register(RegistrationInfo reg) throws Exception
     {
     }
 
@@ -30,7 +30,7 @@ public class PresenceServiceImpl implements PresenceService
      * method when it terminates execution.
      * @param userName The name of the user to be unregistered.
      */
-    void unregister(String userName) throws Exception
+    public void unregister(String userName) throws Exception
     {
     }
 
@@ -40,7 +40,7 @@ public class PresenceServiceImpl implements PresenceService
      * @return The RegistrationInfo info for the client, or null if
      * no such client was found.
      */
-    RegistrationInfo lookup(String name) throws Exception
+    public RegistrationInfo lookup(String name) throws Exception
     {
         return null;
     }
@@ -50,7 +50,7 @@ public class PresenceServiceImpl implements PresenceService
      * @param name The name of the user whose status is to be set.
      * @param status true if user is available, false otherwise.
      */
-    void setStatus(String userName, boolean status) throws Exception
+    public void setStatus(String userName, boolean status) throws Exception
     {
     }
 
@@ -59,7 +59,7 @@ public class PresenceServiceImpl implements PresenceService
      * @return An array of RegistrationInfo objects - one for each client
      * present in the system.
      */
-    RegistrationInfo[] listRegisteredUsers() throws Exception
+    public RegistrationInfo[] listRegisteredUsers() throws Exception
     {
         return null;
     }