From 0a11af2159f235ace7bc0aa29b4abe84360fe018 Mon Sep 17 00:00:00 2001
From: Kirill Plyashkevich <k.plyashkevich@sportradar.com>
Date: Tue, 9 Jul 2019 16:42:47 +0300
Subject: [PATCH] In Java 9 `java.lang.Class.newInstance` was deprecated in
 favour of `java.lang.reflect.Constructor.newInstance`. In order to be able to
 at least compile Akka on Java 9+ provided changes are currently sufficient.

---
 akka-actor/src/main/scala/akka/io/Dns.scala       | 4 ++--
 akka-actor/src/main/scala/akka/util/Reflect.scala | 7 ++++---
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/akka-actor/src/main/scala/akka/io/Dns.scala b/akka-actor/src/main/scala/akka/io/Dns.scala
index 0186903172..5d009de77f 100644
--- a/akka-actor/src/main/scala/akka/io/Dns.scala
+++ b/akka-actor/src/main/scala/akka/io/Dns.scala
@@ -116,7 +116,7 @@ class DnsExt private[akka] (val system: ExtendedActorSystem, resolverName: Strin
         override def apply(r: String): ActorRef = {
           val settings =
             new Settings(system.settings.config.getConfig("akka.io.dns"), "async-dns")
-          val provider = system.dynamicAccess.getClassFor[DnsProvider](settings.ProviderObjectName).get.newInstance()
+          val provider = system.dynamicAccess.createInstanceFor[DnsProvider](settings.ProviderObjectName, Nil).get
           system.log.info("Creating async dns resolver {} with manager name {}", settings.Resolver, managerName)
           system.systemActorOf(
             props = Props(
@@ -163,7 +163,7 @@ class DnsExt private[akka] (val system: ExtendedActorSystem, resolverName: Strin
 
   // System DNS resolver
   val provider: DnsProvider =
-    system.dynamicAccess.getClassFor[DnsProvider](Settings.ProviderObjectName).get.newInstance()
+    system.dynamicAccess.createInstanceFor[DnsProvider](Settings.ProviderObjectName, Nil).get
 
   // System DNS cache
   val cache: Dns = provider.cache
diff --git a/akka-actor/src/main/scala/akka/util/Reflect.scala b/akka-actor/src/main/scala/akka/util/Reflect.scala
index 36b69ce129..c05c73c701 100644
--- a/akka-actor/src/main/scala/akka/util/Reflect.scala
+++ b/akka-actor/src/main/scala/akka/util/Reflect.scala
@@ -42,14 +42,15 @@ private[akka] object Reflect {
    * @param clazz the class which to instantiate an instance of
    * @return a new instance from the default constructor of the given class
    */
-  private[akka] def instantiate[T](clazz: Class[T]): T =
-    try clazz.newInstance
+  private[akka] def instantiate[T](clazz: Class[T]): T = {
+    val ctor = clazz.getDeclaredConstructor()
+    try ctor.newInstance()
     catch {
       case _: IllegalAccessException =>
-        val ctor = clazz.getDeclaredConstructor()
         ctor.setAccessible(true)
         ctor.newInstance()
     }
+  }
 
   /**
    * INTERNAL API