diff -r 2b1e684c3ce6 -r e3ff12d14d43 src/java.base/share/classes/java/net/AbstractPlainDatagramSocketImpl.java
--- a/src/java.base/share/classes/java/net/AbstractPlainDatagramSocketImpl.java	Fri Oct 18 17:08:59 2019 +0100
+++ b/src/java.base/share/classes/java/net/AbstractPlainDatagramSocketImpl.java	Fri Oct 18 21:25:01 2019 +0100
@@ -46,7 +46,9 @@
  * @author Pavani Diwanji
  */
 
-abstract class AbstractPlainDatagramSocketImpl extends PlatformDatagramSocketImpl
+abstract class AbstractPlainDatagramSocketImpl
+    extends DatagramSocketImpl
+    implements PlatformDatagramSocketImpl
 {
     /* timeout value for receive() */
     int timeout;