src/java.base/share/classes/java/time/chrono/JapaneseDate.java

@@ -122,10 +122,11 @@
   * This class is immutable and thread-safe.
   *
   * @since 1.8
   */
  @jdk.internal.ValueBased
+ @jdk.internal.MigratedValueClass
  public final class JapaneseDate
          extends ChronoLocalDateImpl<JapaneseDate>
          implements ChronoLocalDate, Serializable {
  
      /**