--- old/src/java.desktop/share/classes/javax/swing/table/TableColumn.java	2017-11-07 08:17:55.616052377 -0800
+++ new/src/java.desktop/share/classes/javax/swing/table/TableColumn.java	2017-11-07 08:17:55.456052373 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, 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
@@ -83,7 +83,7 @@
  * @see JTable#getCellEditor(int, int)
  */
 @SuppressWarnings("serial") // Same-version serialization only
-public class TableColumn extends Object implements Serializable {
+public class TableColumn implements Serializable {
 
     /**
      * Obsolete as of Java 2 platform v1.3.  Please use string literals to identify