src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/tree/ExpressionTree.java

*** 27,34 ****
--- 27,38 ----
  
  /**
   * A tree node used as the base class for the different types of
   * expressions.
   *
+  * @deprecated Nashorn JavaScript script engine and APIs, and the jjs tool
+  * are deprecated with the intent to remove them in a future release.
+  *
   * @since 9
   */
+ @Deprecated(since="11", forRemoval=true)
  public interface ExpressionTree extends Tree {}