Added check for parameter, to make sure only valid can pass

Signed-off-by: Roland Häder <roland@mxchange.org>

diff --git a/src/java/org/mxchange/addressbook/beans/user/AddressbookAdminUserWebSessionBean.java b/src/java/org/mxchange/addressbook/beans/user/AddressbookAdminUserWebSessionBean.java
index afd96c373de0dad27948f97e5ecac51159a392fd..7affb06450723ee538f8365c4f490d030afc087a 100644 (file)
--- a/src/java/org/mxchange/addressbook/beans/user/AddressbookAdminUserWebSessionBean.java
+++ b/src/java/org/mxchange/addressbook/beans/user/AddressbookAdminUserWebSessionBean.java
@@ -601,6 +601,14 @@ public class AddressbookAdminUserWebSessionBean implements AddressbookAdminUserW
 
        @Override
        public User lookupUserById (final Long userId) throws UserNotFoundException {
+               if (null == userId) {
+                       // Throw NPE
+                       throw new NullPointerException("userId is null"); //NOI18N
+               } else if (userId < 1) {
+                       // Not valid
+                       throw new IllegalArgumentException(MessageFormat.format("userId={0} is not valid.", userId)); //NOI18N
+               }
+
                // Init variable
                User user = null;