src/java.desktop/share/classes/javax/sound/sampled/LineEvent.java

@@ -58,10 +58,11 @@
      * {@code STOP}).
      *
      * @see #getType
      * @serial
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private final Type type;
 
     /**
      * The media position when the event occurred, expressed in sample frames.
      * Note that this field is only relevant to certain events generated by data