8044626: Update RMI specifications to reflect modularization changes

8165649: Re-examine if Activatable object can be created from non-public class and/or constructor

Reviewed-by: alanb, mchung

jdk/src/java.rmi/share/classes/java/rmi/activation/ActivationInstantiator.java

@@ -60,7 +60,20 @@ public interface ActivationInstantiator extends Remote {
     * initialization data, and
     *
     * <li> returning a MarshalledObject containing the stub for the
-    * remote object it created </ul>
+    * remote object it created.</ul>
+    *
+    * <p>In order for activation to be successful, one of the following requirements
+    * must be met, otherwise {@link ActivationException} is thrown:
+    *
+    * <ul><li>The class to be activated and the special activation constructor are both public,
+    * and the class resides in a package that is
+    * {@linkplain java.lang.reflect.Module#isExported(String,java.lang.reflect.Module) exported}
+    * to at least the {@code java.rmi} module; or
+    *
+    * <li>The class to be activated resides in a package that is
+    * {@linkplain java.lang.reflect.Module#isOpen(String,java.lang.reflect.Module) open}
+    * to at least the {@code java.rmi} module.
+    * </ul>
     *
     * @param id the object's activation identifier
     * @param desc the object's descriptor

jdk/src/java.rmi/share/classes/java/rmi/activation/Activator.java

@@ -48,7 +48,7 @@ import java.rmi.activation.UnknownObjectException;
  * The <code>Activator</code> works closely with
  * <code>ActivationSystem</code>, which provides a means for registering
  * groups and objects within those groups, and <code>ActivationMonitor</code>,
- * which recives information about active and inactive objects and inactive
+ * which receives information about active and inactive objects and inactive
  * groups. <p>
  *
  * The activator is responsible for monitoring and detecting when

jdk/src/java.rmi/share/classes/java/rmi/server/UnicastRemoteObject.java

@@ -107,8 +107,9 @@ import sun.rmi.transport.LiveRef;
  * the binary name of the root class with the suffix {@code _Stub}.
  *
  * <li>The stub class is loaded by name using the class loader of the root
- * class. The stub class must extend {@link RemoteStub} and must have a
- * public constructor that has one parameter of type {@link RemoteRef}.
+ * class. The stub class must be public, it must extend {@link RemoteStub}, it must
+ * reside in a package that is exported to at least the {@code java.rmi} module, and it
+ * must have a public constructor that has one parameter of type {@link RemoteRef}.
  *
  * <li>Finally, an instance of the stub class is constructed with a
  * {@link RemoteRef}.
@@ -124,12 +125,21 @@ import sun.rmi.transport.LiveRef;
  *
  * <ul>
  *
- * <li>The proxy's class is defined by the class loader of the remote
- * object's class.
+ * <li>The proxy's class is defined according to the specifications for the
+ * <a href="{@docRoot}/java/lang/reflect/Proxy.html#membership">
+ * {@code Proxy}
+ * </a>
+ * class, using the class loader of the remote object's class.
  *
  * <li>The proxy implements all the remote interfaces implemented by the
  * remote object's class.
  *
+ * <li>Each remote interface must either be public and reside in a package that is
+ * {@linkplain java.lang.reflect.Module#isExported(String,java.lang.reflect.Module) exported}
+ * to at least the {@code java.rmi} module, or it must reside in a package that is
+ * {@linkplain java.lang.reflect.Module#isOpen(String,java.lang.reflect.Module) open}
+ * to at least the {@code java.rmi} module.
+ *
  * <li>The proxy's invocation handler is a {@link
  * RemoteObjectInvocationHandler} instance constructed with a
  * {@link RemoteRef}.