src/java.base/share/classes/jdk/internal/javac/PreviewFeature.java

*** 62,10 ***
--- 62,13 ---
      /**
       * Enum of preview features in the current release.
       * Values should be annotated with the feature's {@code JEP}.
       */
      public enum Feature {
+         @JEP(number=401, title="Value Classes and Objects", status = "Preview")
+         VALUE_OBJECTS,
+ 
          // The JDK build process involves creating an interim javac which is then
          // used to compile the rest of the JDK. The jdk.internal.javac.PreviewFeature
          // annotation from the current sources is used when compiling interim javac.
          // That's because the javac APIs of the current sources may be annotated with
          // this annotation and they may be using the enum constants of the current sources.

*** 79,11 ***
          // enum constants for preview features that are present in the bootstrap JDK.
          // Older constants can be removed.
          //
          // For example, Class-File API became final in JDK 24. As soon as JDK 23 was dropped as
          // the bootstrap JDK, the CLASSFILE_API enum constant became eligible for removal.
- 
          //---
          @JEP(number=505, title="Structured Concurrency", status="Fifth Preview")
          STRUCTURED_CONCURRENCY,
          @JEP(number = 502, title = "Stable Values", status = "Preview")
          STABLE_VALUES,
--- 82,10 ---