src/java.desktop/share/classes/java/awt/FileDialog.java

@@ -123,10 +123,11 @@
      * @serial
      * @see #getFilenameFilter()
      * @see #setFilenameFilter()
      * @see FileNameFilter
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     FilenameFilter filter;
 
     private static final String base = "filedlg";
     private static int nameCounter = 0;