--- old/src/jdk.naming.dns/share/classes/com/sun/jndi/dns/ZoneNode.java	2018-12-06 17:26:49.441626005 -0500
+++ new/src/jdk.naming.dns/share/classes/com/sun/jndi/dns/ZoneNode.java	2018-12-06 17:26:49.273625172 -0500
@@ -124,7 +124,7 @@
      * name and its resource records.  Returns the zone's new contents.
      */
     NameNode populate(DnsName zone, ResourceRecords rrs) {
-        // assert zone.get(0).equals("");               // zone has root label
+        // assert zone.get(0).isEmpty();               // zone has root label
         // assert (zone.size() == (depth() + 1));       // +1 due to root label
 
         NameNode newContents = new NameNode(null);