src/java.compiler/share/classes/module-info.java

*** 27,36 ****
--- 27,38 ----
    * Defines the Language Model, Annotation Processing, and Java Compiler APIs.
    * <P>
    * These APIs model declarations and types of the Java programming language,
    * and define interfaces for tools such as compilers which can be invoked
    * from a program.
+   *
+   * @since 9
    */
  module java.compiler {
      exports javax.annotation.processing;
      exports javax.lang.model;
      exports javax.lang.model.element;