src/java.base/share/classes/java/text/CompactNumberFormat.java

*** 182,191 ****
--- 182,192 ----
   * @see DecimalFormat
   * @since 12
   */
  public final class CompactNumberFormat extends NumberFormat {
  
+     @java.io.Serial
      private static final long serialVersionUID = 7128367218649234678L;
  
      /**
       * The patterns for compact form of numbers for this
       * {@code CompactNumberFormat}. A possible example is
*** 1782,1791 ****
--- 1783,1793 ----
       * @param inStream the stream
       * @throws IOException if an I/O error occurs
       * @throws ClassNotFoundException if the class of a serialized object
       *         could not be found
       */
+     @java.io.Serial
      private void readObject(ObjectInputStream inStream) throws IOException,
              ClassNotFoundException {
  
          inStream.defaultReadObject();
          if (decimalPattern == null || compactPatterns == null