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

@@ -32,12 +32,16 @@
  * For example:
  * <pre>
  *   <em>variable</em> <em>operator</em> <em>expression</em>
  * </pre>
  *
+ * @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 CompoundAssignmentTree extends ExpressionTree {
     /**
      * Returns the left hand side (LHS) of this assignment.
      *
      * @return left hand side (LHS) expression