JDK 23: update JEPs

Author: wesleyegberto

README.md

@@ -13,6 +13,8 @@ A project to explore more about the new features from Java 8 through Java 21.
 
 * [Java 23](java-23/)
   * Primitive Types in Patterns, `instanceof` and `switch` (preview)
+  * Class-File API (preview 2)
+  * Stream Gatherers (preview 2)
 
 * [Java 22](java-22/) (Mar, 2024)
   * Statements before `super` (preview)
@@ -23,6 +25,7 @@ A project to explore more about the new features from Java 8 through Java 21.
   * Stream Gatherers (preview)
   * Structured Concurrency (preview 2)
   * Scoped Value (preview 2)
+  * Class-File API (preview)
 
 * [Java 21](java-21/) (LTS; Sep, 2023)
   * Virtual Threads (standard) :rocket:

java-23/README.md

@@ -6,6 +6,8 @@ To run each example use: `java --enable-preview --source 23 <FileName.java>`
 
 * [455](https://openjdk.org/jeps/455) - Primitive Types in Patterns, instanceof, and switch (Preview)
 * [466](https://openjdk.org/jeps/466) - Class-File API (Second Preview)
+* [469](https://openjdk.org/jeps/469) - Vector API (Eighth Incubator)
+* [473](https://openjdk.org/jeps/473) - Stream Gatherers (Second Preview)
 
 ## Features
 
@@ -28,6 +30,8 @@ To run each example use: `java --enable-preview --source 23 <FileName.java>`
                 * if the switch's selector expression is a float then any case constants must be a floating-point literals
                 * floating-point literal in case labels is defined in terms of [representation equivalence](https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/Double.html#repEquivalence)
                     * a label `case 1.0f` is considered the same as `case 0.99999999f`, will throw a duplicate label error
+* **Stream Gatherers**
+    * re-preview without change
 
 ## Links