diff -r 9b4717ca9bd1 -r 1def54255e93 src/java.naming/share/classes/com/sun/jndi/ldap/DefaultLdapDnsProvider.java
--- a/src/java.naming/share/classes/com/sun/jndi/ldap/DefaultLdapDnsProvider.java	Fri Sep 13 08:40:09 2019 +0200
+++ b/src/java.naming/share/classes/com/sun/jndi/ldap/DefaultLdapDnsProvider.java	Fri Sep 13 11:00:07 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -76,7 +76,7 @@
         }
 
         LdapDnsProviderResult res = new LdapDnsProviderResult(domainName, endpoints);
-        if (res.getEndpoints().size() == 0 && res.getDomainName().isEmpty()) {
+        if (res.getEndpoints().isEmpty() && res.getDomainName().isEmpty()) {
             return Optional.empty();
         } else {
             return Optional.of(res);