--- old/src/java.base/share/classes/java/io/UTFDataFormatException.java	2019-08-27 17:26:57.430324386 -0700
+++ new/src/java.base/share/classes/java/io/UTFDataFormatException.java	2019-08-27 17:26:57.254324386 -0700
@@ -44,6 +44,7 @@
  */
 public
 class UTFDataFormatException extends IOException {
+    @java.io.Serial
     private static final long serialVersionUID = 420743449228280612L;
 
     /**