src/java.base/share/classes/java/lang/Exception.java

*** 41,50 ****
--- 41,51 ----
   * @see     java.lang.Error
   * @jls 11.2 Compile-Time Checking of Exceptions
   * @since   1.0
   */
  public class Exception extends Throwable {
+     @java.io.Serial
      static final long serialVersionUID = -3387516993124229948L;
  
      /**
       * Constructs a new exception with {@code null} as its detail message.
       * The cause is not initialized, and may subsequently be initialized by a