src/java.base/share/classes/sun/util/calendar/ZoneInfo.java

@@ -161,10 +161,11 @@
     /**
      * True if the object has been modified after its instantiation.
      */
     private transient boolean dirty = false;
 
+    @java.io.Serial
     private static final long serialVersionUID = 2653134537216586139L;
 
     /**
      * A constructor.
      */

@@ -724,10 +725,11 @@
      */
     public static Map<String, String> getAliasTable() {
          return ZoneInfoFile.getAliasMap();
     }
 
+    @java.io.Serial
     private void readObject(ObjectInputStream stream)
             throws IOException, ClassNotFoundException {
         stream.defaultReadObject();
         // We don't know how this object from 1.4.x or earlier has
         // been mutated. So it should always be marked as `dirty'.