--- old/src/java.base/share/classes/java/net/InetSocketAddress.java	2019-08-27 17:27:59.298324386 -0700
+++ new/src/java.base/share/classes/java/net/InetSocketAddress.java	2019-08-27 17:27:59.118324386 -0700
@@ -136,6 +136,7 @@
 
     private final transient InetSocketAddressHolder holder;
 
+    @java.io.Serial
     private static final long serialVersionUID = 5076001401234631237L;
 
     private static int checkPort(int port) {
@@ -259,11 +260,13 @@
      * @serialField addr InetAddress
      * @serialField port int
      */
+    @java.io.Serial
     private static final ObjectStreamField[] serialPersistentFields = {
          new ObjectStreamField("hostname", String.class),
          new ObjectStreamField("addr", InetAddress.class),
          new ObjectStreamField("port", int.class)};
 
+    @java.io.Serial
     private void writeObject(ObjectOutputStream out)
         throws IOException
     {
@@ -275,6 +278,7 @@
          out.writeFields();
      }
 
+    @java.io.Serial
     private void readObject(ObjectInputStream in)
         throws IOException, ClassNotFoundException
     {
@@ -296,6 +300,7 @@
         UNSAFE.putReference(this, FIELDS_OFFSET, h);
     }
 
+    @java.io.Serial
     private void readObjectNoData()
         throws ObjectStreamException
     {