--- old/src/java.base/share/classes/java/lang/Character.java	2019-08-27 17:27:03.710324386 -0700
+++ new/src/java.base/share/classes/java/lang/Character.java	2019-08-27 17:27:03.486324386 -0700
@@ -8293,6 +8293,7 @@
     private final char value;
 
     /** use serialVersionUID from JDK 1.0.2 for interoperability */
+    @java.io.Serial
     private static final long serialVersionUID = 3786198910865385080L;
 
     /**