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

@@ -27,10 +27,12 @@
   * 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;