Summary

Update core libraries for JDK 23 by adding an enum constant to ClassFileFormatVersion.

Problem

With a new release, ClassFileFormatVersion needs a constant to model that release.

Solution

Add the new constant.

Specification

diff --git a/src/java.base/share/classes/java/lang/reflect/ClassFileFormatVersion.java b/src/java.base/share/classes/java/lang/reflect/ClassFileFormatVersion.java
index ae1c48226ef..16c57a9463e 100644
--- a/src/java.base/share/classes/java/lang/reflect/ClassFileFormatVersion.java
+++ b/src/java.base/share/classes/java/lang/reflect/ClassFileFormatVersion.java
@@ -294,6 +294,18 @@ public enum ClassFileFormatVersion {
      * <cite>The Java Virtual Machine Specification, Java SE 22 Edition</cite></a>
      */
     RELEASE_22(66),
+
+    /**
+     * The version introduced by the Java Platform, Standard Edition
+     * 23.
+     *
+     * @since 23
+     *
+     * @see <a
+     * href="https://docs.oracle.com/javase/specs/jvms/se23/html/index.html">
+     * <cite>The Java Virtual Machine Specification, Java SE 23 Edition</cite></a>
+     */
+    RELEASE_23(67),
     ; // Reduce code churn when appending new constants

     // Note to maintainers: when adding constants for newer releases,
@@ -309,7 +321,7 @@ private ClassFileFormatVersion(int major) {
      * {@return the latest class file format version}
      */
     public static ClassFileFormatVersion latest() {
-        return RELEASE_22;
+        return RELEASE_23;
     }

     /**