added exception name in error output; added new instance executor

server/src/main/java/com/uqac/rthoni/java_rmi/server/ServerApplication.java

@@ -186,8 +186,11 @@ public class ServerApplication {
         else {
             try {
                 data = executor.run(command, this);
+                if (data == null) {
+                    data = "OK";
+                }
             } catch (Exception e) {
-                data = String.format("Error when handling command: %s", e.getMessage());
+                data = String.format("Error when handling command: %s %s", e.getClass().getName(), e.getMessage());
                 System.err.println(data);
             }
         }

server/src/main/java/com/uqac/rthoni/java_rmi/server/executors/NewInstanceExecutor.java

@@ -0,0 +1,24 @@
+package com.uqac.rthoni.java_rmi.server.executors;
+
+import com.uqac.rthoni.java_rmi.common.Command;
+import com.uqac.rthoni.java_rmi.server.ServerApplication;
+
+/**
+ * Created by robin on 9/16/16.
+ */
+public class NewInstanceExecutor extends AbstractCommandExecutor {
+    @Override
+    public String getCommandName() {
+        return "creation";
+    }
+
+    @Override
+    public String run(Command command, ServerApplication server) throws Exception {
+        String className = command.getArgument(0);
+        String id = command.getArgument(1);
+        Class c = Class.forName(className);
+        Object obj = c.newInstance();
+        server.addObject(id, obj);
+        return null;
+    }
+}