Exception created and dropped

Change-Id: I4548daa036c4b17f30535d849eb84f1c920feaab
diff --git a/apps/yms/app/src/main/java/org/onosproject/yms/app/yab/YangApplicationBroker.java b/apps/yms/app/src/main/java/org/onosproject/yms/app/yab/YangApplicationBroker.java
index aa76750..8be223c 100644
--- a/apps/yms/app/src/main/java/org/onosproject/yms/app/yab/YangApplicationBroker.java
+++ b/apps/yms/app/src/main/java/org/onosproject/yms/app/yab/YangApplicationBroker.java
@@ -846,10 +846,13 @@
                         .getDeclaredMethod(yangNode.getJavaClassNameOrBuiltInType(),
                                            inputObject.getClass().getInterfaces());
             }
+            if (methodObject != null) {
+                return methodObject.getReturnType().getSimpleName();
+            }
+            throw new YabException("No such method in application");
         } catch (NoSuchMethodException e) {
-            new YabException(e);
+            throw new YabException(e);
         }
-        return methodObject.getReturnType().getSimpleName();
     }
 
     /**