Play 2.6.5 does not work with Java 9

[markehammons]

Play Version (2.5.x / etc)

2.6.5

API (Scala / Java / Neither / Both)

Scala

Operating System (Ubuntu 15.10 / MacOS 10.10 / Windows 10)

Fedora 26

JDK (Oracle 1.8.0_72, OpenJDK 1.8.x, Azul Zing)

openjdk version "9.0.0.15"
OpenJDK Runtime Environment (Zulu build 9.0.0.15+181)
OpenJDK 64-Bit Server VM (Zulu build 9.0.0.15+181, mixed mode)

Expected Behavior

I expect my application to load!

Actual Behavior

java.lang.NumberFormatException: Not a version: 9
        at scala.util.PropertiesTrait$class.parts$1(Properties.scala:176)
        at scala.util.PropertiesTrait$class.isJavaAtLeast(Properties.scala:180)
        at scala.util.Properties$.isJavaAtLeast(Properties.scala:16)
        at play.dev.filewatch.FileWatchService$$anon$1.delegate$lzycompute(FileWatchService.scala:68)
        at play.dev.filewatch.FileWatchService$$anon$1.delegate(FileWatchService.scala:66)
        at play.dev.filewatch.FileWatchService$$anon$1.watch(FileWatchService.scala:79)
        at play.runsupport.Reloader.<init>(Reloader.scala:359)
        at play.runsupport.Reloader$.reloader$lzycompute$1(Reloader.scala:220)
        at play.runsupport.Reloader$.play$runsupport$Reloader$$reloader$1(Reloader.scala:220)
        at play.runsupport.Reloader$.startDevMode(Reloader.scala:230)
        at play.sbt.run.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.devModeServer$lzycompute$1(PlayRun.scala:77)
        at play.sbt.run.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.play$sbt$run$PlayRun$$anonfun$$anonfun$$anonfun$$devModeServer$1(PlayRun.scala:77)
        at play.sbt.run.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.apply(PlayRun.scala:100)
        at play.sbt.run.PlayRun$$anonfun$playRunTask$1$$anonfun$apply$2$$anonfun$apply$3.apply(PlayRun.scala:63)
        at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)

Reproducible Test Case

I imagine this is reproducible with any application if you're using a java 9 vm. It appears there is a hardcoded list of java versions in the framework, and 9 is not in the list.

[jroper]

I imagine this will be the easiest issue to fix of all the JDK9 compatibility issues that we're going to encounter.

[richdougherty]

Thanks for the report @markehammons. Agree it would be good to get working with Java 9!

[marcospereira]

Hey @markehammons, which version of Scala is your app is using?

I was able to create a play app as I described here: https://groups.google.com/forum/#!topic/play-framework/e3KLg94j5_M

Could you please try with Scala 2.12.3 and report back if it works for you?

[markehammons]

I'm using scala 2.12.3

[marcospereira]

Hi @markehammons,

The Scala issue was scala/scala#5276 and it was released in 2.12.1 and preliminary support was added in sbt 0.13.14.

Is it possible to create a small project to reproduces the problem? I'm running the following build of Java 9:

java version "9"
Java(TM) SE Runtime Environment (build 9+181)
Java HotSpot(TM) 64-Bit Server VM (build 9+181, mixed mode)

[Spenhouet]

I had the same issue. While this one issue got fixed there are many others. It's just not possible to use Play with Java 9 at the moment.
Scala doesn't support the released Java 9 as of yet:
scala/scala-dev#139

It seems that they are far from ready and I don't see any progress.

Also I think Play needs to release this first:
#7261

As far as I see it, only SBT 1.x.x will support Java 9 .
sbt/sbt#3587

[marcospereira]

I had the same issue. While this one issue got fixed there are many others. It's just not possible to use Play with Java 9 at the moment.

Hi @Spenhouet, what other issues did you find?

Java support will probably come in two waves here, one to ensure that everything runs fine on Java 9 and other to use new features (like the module system) and APIs. We first need to ensure that Play applications can run fine on Java 9. The same is happening with sbt and Scala, that is why sbt support in 0.13.14 was described as preliminary and see how sbt/sbt#3587 is also described as "improved" compatibility.

So, what issues did you find? What is making not possible to use Play with Java 9 at the moment? Is it possible to reproduce them?

Thanks.

[Spenhouet]

@marcospereira Oh, it seems I had a different issue. After looking up and solving the issue described in this thread I got a new error.
scala.reflect.internal.MissingRequirementError: object java.lang.Object in compiler mirror not found.
At this point I gave up and blamed it on the long list of tasks for the Java 9 support for scala (scala/scala-dev#139).

I just found out that somehow my IDE (IntelliJ) and sbt does ignore the scalaVersion defined in build.sbt and just loads the default scala version for sbt version 0.13.16 that is scala 2.10.6.
This happens when I change my PATH and JAVA_HOME to jdk-9.
It looks like I'm not the only one with this issue: https://stackoverflow.com/questions/45305922/why-intellij-idea-uses-scala-2-10-6-for-play2-configuration

This could be something specific to my system and maybe not related to the whole java 9 support issue. Not sure.

Still, this is probably solved when sbt uses a new default scala version (sbt/sbt#3587) and play released the support for sbt 1.x.x (#7261).

error: error while loading package, Missing dependency 'object java.lang.Object in compiler mirror', required by C:\Users\spe\.sbt\boot\scala-2.10.6\lib\scala-library.jar(scala/package.class)
error: error while loading package, Missing dependency 'object java.lang.Object in compiler mirror', required by C:\Users\spe\.sbt\boot\scala-2.10.6\lib\scala-library.jar(scala/runtime/package.class)
scala.reflect.internal.MissingRequirementError: object java.lang.Object in compiler mirror not found.

        at scala.reflect.internal.MissingRequirementError$.signal(MissingRequirementError.scala:16)

        at scala.reflect.internal.MissingRequirementError$.notFound(MissingRequirementError.scala:17)
        at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:48)
        at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:40)
        at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:40)
        at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:61)
        at scala.reflect.internal.Mirrors$RootsBase.getClassByName(Mirrors.scala:99)
        at scala.reflect.internal.Mirrors$RootsBase.getRequiredClass(Mirrors.scala:102)
        at scala.reflect.internal.Definitions$DefinitionsClass.ObjectClass$lzycompute(Definitions.scala:264)
        at scala.reflect.internal.Definitions$DefinitionsClass.ObjectClass(Definitions.scala:264)
        at scala.reflect.internal.Definitions$DefinitionsClass.AnyRefClass$lzycompute(Definitions.scala:263)
        at scala.reflect.internal.Definitions$DefinitionsClass.AnyRefClass(Definitions.scala:263)
        at scala.reflect.internal.Definitions$DefinitionsClass.specialPolyClass(Definitions.scala:1120)
        at scala.reflect.internal.Definitions$DefinitionsClass.RepeatedParamClass$lzycompute(Definitions.scala:407)
        at scala.reflect.internal.Definitions$DefinitionsClass.RepeatedParamClass(Definitions.scala:407)
        at scala.reflect.internal.Definitions$DefinitionsClass.syntheticCoreClasses$lzycompute(Definitions.scala:1154)
        at scala.reflect.internal.Definitions$DefinitionsClass.syntheticCoreClasses(Definitions.scala:1152)
        at scala.reflect.internal.Definitions$DefinitionsClass.symbolsNotPresentInBytecode$lzycompute(Definitions.scala:1196)
        at scala.reflect.internal.Definitions$DefinitionsClass.symbolsNotPresentInBytecode(Definitions.scala:1196)
        at scala.reflect.internal.Definitions$DefinitionsClass.init(Definitions.scala:1261)
        at scala.tools.nsc.Global$Run.<init>(Global.scala:1290)
        at sbt.compiler.Eval$$anon$1.<init>(Eval.scala:141)
        at sbt.compiler.Eval.run$lzycompute$1(Eval.scala:141)
        at sbt.compiler.Eval.run$1(Eval.scala:141)
        at sbt.compiler.Eval.unlinkAll$1(Eval.scala:144)
        at sbt.compiler.Eval.evalCommon(Eval.scala:153)
        at sbt.compiler.Eval.eval(Eval.scala:96)
        at sbt.EvaluateConfigurations$.evaluateDslEntry(EvaluateConfigurations.scala:177)
        at sbt.EvaluateConfigurations$$anonfun$9.apply(EvaluateConfigurations.scala:117)
        at sbt.EvaluateConfigurations$$anonfun$9.apply(EvaluateConfigurations.scala:115)
        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
        at scala.collection.immutable.List.foreach(List.scala:318)
        at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
        at scala.collection.AbstractTraversable.map(Traversable.scala:105)
        at sbt.EvaluateConfigurations$.evaluateSbtFile(EvaluateConfigurations.scala:115)
        at sbt.Load$.sbt$Load$$loadSettingsFile$1(Load.scala:775)
        at sbt.Load$$anonfun$sbt$Load$$memoLoadSettingsFile$1$1.apply(Load.scala:781)
        at sbt.Load$$anonfun$sbt$Load$$memoLoadSettingsFile$1$1.apply(Load.scala:780)
        at scala.collection.MapLike$class.getOrElse(MapLike.scala:128)
        at scala.collection.AbstractMap.getOrElse(Map.scala:58)
        at sbt.Load$.sbt$Load$$memoLoadSettingsFile$1(Load.scala:780)
        at sbt.Load$$anonfun$loadFiles$1$2.apply(Load.scala:788)
        at sbt.Load$$anonfun$loadFiles$1$2.apply(Load.scala:788)
        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
        at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
        at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
        at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
        at scala.collection.AbstractTraversable.map(Traversable.scala:105)
        at sbt.Load$.loadFiles$1(Load.scala:788)
        at sbt.Load$.discoverProjects(Load.scala:799)
        at sbt.Load$.discover$1(Load.scala:585)
        at sbt.Load$.sbt$Load$$loadTransitive(Load.scala:633)
        at sbt.Load$$anonfun$loadUnit$1.sbt$Load$$anonfun$$loadProjects$1(Load.scala:482)
        at sbt.Load$$anonfun$loadUnit$1$$anonfun$40.apply(Load.scala:485)
        at sbt.Load$$anonfun$loadUnit$1$$anonfun$40.apply(Load.scala:485)
        at sbt.Load$.timed(Load.scala:1025)
        at sbt.Load$$anonfun$loadUnit$1.apply(Load.scala:485)
        at sbt.Load$$anonfun$loadUnit$1.apply(Load.scala:459)
        at sbt.Load$.timed(Load.scala:1025)
        at sbt.Load$.loadUnit(Load.scala:459)
        at sbt.Load$$anonfun$25$$anonfun$apply$14.apply(Load.scala:311)
        at sbt.Load$$anonfun$25$$anonfun$apply$14.apply(Load.scala:310)
        at sbt.BuildLoader$$anonfun$componentLoader$1$$anonfun$apply$4$$anonfun$apply$5$$anonfun$apply$6.apply(BuildLoader.scala:91)
        at sbt.BuildLoader$$anonfun$componentLoader$1$$anonfun$apply$4$$anonfun$apply$5$$anonfun$apply$6.apply(BuildLoader.scala:90)
        at sbt.BuildLoader.apply(BuildLoader.scala:140)
        at sbt.Load$.loadAll(Load.scala:365)
        at sbt.Load$.loadURI(Load.scala:320)
        at sbt.Load$.load(Load.scala:316)
        at sbt.Load$.load(Load.scala:305)
        at sbt.Load$$anonfun$4.apply(Load.scala:146)
        at sbt.Load$$anonfun$4.apply(Load.scala:146)
        at sbt.Load$.timed(Load.scala:1025)
        at sbt.Load$.apply(Load.scala:146)
        at sbt.Load$.buildPluginDefinition(Load.scala:886)
        at sbt.Load$.buildPlugins(Load.scala:852)
        at sbt.Load$.plugins(Load.scala:840)
        at sbt.Load$$anonfun$loadUnit$1$$anonfun$34.apply(Load.scala:465)
        at sbt.Load$$anonfun$loadUnit$1$$anonfun$34.apply(Load.scala:465)
        at sbt.Load$.timed(Load.scala:1025)
        at sbt.Load$$anonfun$loadUnit$1.apply(Load.scala:464)
        at sbt.Load$$anonfun$loadUnit$1.apply(Load.scala:459)
        at sbt.Load$.timed(Load.scala:1025)
        at sbt.Load$.loadUnit(Load.scala:459)
        at sbt.Load$$anonfun$25$$anonfun$apply$14.apply(Load.scala:311)
        at sbt.Load$$anonfun$25$$anonfun$apply$14.apply(Load.scala:310)
        at sbt.BuildLoader$$anonfun$componentLoader$1$$anonfun$apply$4$$anonfun$apply$5$$anonfun$apply$6.apply(BuildLoader.scala:91)
        at sbt.BuildLoader$$anonfun$componentLoader$1$$anonfun$apply$4$$anonfun$apply$5$$anonfun$apply$6.apply(BuildLoader.scala:90)
        at sbt.BuildLoader.apply(BuildLoader.scala:140)
        at sbt.Load$.loadAll(Load.scala:365)
        at sbt.Load$.loadURI(Load.scala:320)
        at sbt.Load$.load(Load.scala:316)
        at sbt.Load$.load(Load.scala:305)
        at sbt.Load$$anonfun$4.apply(Load.scala:146)
        at sbt.Load$$anonfun$4.apply(Load.scala:146)
        at sbt.Load$.timed(Load.scala:1025)
        at sbt.Load$.apply(Load.scala:146)
        at sbt.Load$.defaultLoad(Load.scala:39)
        at sbt.BuiltinCommands$.liftedTree1$1(Main.scala:503)
        at sbt.BuiltinCommands$.doLoadProject(Main.scala:503)
        at sbt.BuiltinCommands$$anonfun$loadProjectImpl$2.apply(Main.scala:495)
        at sbt.BuiltinCommands$$anonfun$loadProjectImpl$2.apply(Main.scala:495)
        at sbt.Command$$anonfun$applyEffect$1$$anonfun$apply$2.apply(Command.scala:59)
        at sbt.Command$$anonfun$applyEffect$1$$anonfun$apply$2.apply(Command.scala:59)
        at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:61)
        at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:61)
        at sbt.Command$.process(Command.scala:93)
        at sbt.MainLoop$$anonfun$1$$anonfun$apply$1.apply(MainLoop.scala:96)
        at sbt.MainLoop$$anonfun$1$$anonfun$apply$1.apply(MainLoop.scala:96)
        at sbt.State$$anon$1.runCmd$1(State.scala:183)
        at sbt.State$$anon$1.process(State.scala:187)
        at sbt.MainLoop$$anonfun$1.apply(MainLoop.scala:96)
        at sbt.MainLoop$$anonfun$1.apply(MainLoop.scala:96)
        at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
        at sbt.MainLoop$.next(MainLoop.scala:96)
        at sbt.MainLoop$.run(MainLoop.scala:89)
        at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:68)
        at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:63)
        at sbt.Using.apply(Using.scala:24)
        at sbt.MainLoop$.runWithNewLog(MainLoop.scala:63)
        at sbt.MainLoop$.runAndClearLast(MainLoop.scala:46)
        at sbt.MainLoop$.runLoggedLoop(MainLoop.scala:30)
        at sbt.MainLoop$.runLogged(MainLoop.scala:22)
        at sbt.StandardMain$.runManaged(Main.scala:61)
        at sbt.xMain.run(Main.scala:35)
        at xsbt.boot.Launch$$anonfun$run$1.apply(Launch.scala:109)
        at xsbt.boot.Launch$.withContextLoader(Launch.scala:128)
        at xsbt.boot.Launch$.run(Launch.scala:109)
        at xsbt.boot.Launch$$anonfun$apply$1.apply(Launch.scala:35)
        at xsbt.boot.Launch$.launch(Launch.scala:117)
        at xsbt.boot.Launch$.apply(Launch.scala:18)
        at xsbt.boot.Boot$.runImpl(Boot.scala:41)
        at xsbt.boot.Boot$.main(Boot.scala:17)
        at xsbt.boot.Boot.main(Boot.scala)
[error] scala.reflect.internal.MissingRequirementError: object java.lang.Object in compiler mirror not found.

When using sbt 1.0.2 I only get the following error:

[error] unresolved dependency: com.typesafe.play#sbt-plugin;2.6.5: not found
[error] unresolved dependency: com.typesafe.sbt#sbt-jshint;1.0.5: not found
[error] unresolved dependency: com.typesafe.sbt#sbt-rjs;1.0.9: not found
[error] unresolved dependency: com.typesafe.sbt#sbt-play-enhancer;1.2.1: not found

[marcospereira]

Thank you for the feedback, @Spenhouet.

You can try with one of the nightly built snapshot, for example, this version: 2.6.6-2017-10-05-829d140-SNAPSHOT. You will need the following resolver too:

resolvers += Resolver.sonatypeRepo("snapshots")

And of course change build.properties to use sbt 1.0.2.

Can you check and see if it works?

[Spenhouet]

@marcospereira I've tried 2.6.6-2017-10-05-829d140-SNAPSHOT and the new released 2.6.6 with sbt 1.0.2 and it resolves the error

[error] unresolved dependency: com.typesafe.play#sbt-plugin;2.6.5: not found

but both versions still leaves me with the following errors:

[error] sbt.librarymanagement.ResolveException: unresolved dependency: com.typesafe.sbt#sbt-jshint;1.0.5: not found
[error] unresolved dependency: com.typesafe.sbt#sbt-rjs;1.0.9: not found
[error] unresolved dependency: com.typesafe.sbt#sbt-play-enhancer;1.2.1: not found

I guess the following issues need to be resolved and released:

• Cross build for sbt 0.13 and 1.0 sbt/sbt-jshint#40
• Publish for SBT 1.0 sbt/sbt-rjs#80 & Cross build for sbt 0.13 and 1.0 sbt/sbt-rjs#81
• Cross build for sbt 0.13 and 1.0 play-enhancer#15

[marcospereira]

@Spenhouet, you are right. There are still work to be done for sbt-jshint, sbt-rjs and play-enhancer. We really appreciate if you can help here.

[markehammons]

after upgrading to 2.6.6 and sbt 1.0.2, play now launches my app, but it crashes while rendering the home page with this error:

java.lang.NoClassDefFoundError: javax/xml/bind/DatatypeConverter
        at io.jsonwebtoken.impl.Base64Codec.decode(Base64Codec.java:26)
        at io.jsonwebtoken.impl.DefaultJwtBuilder.signWith(DefaultJwtBuilder.java:106)
        at play.api.mvc.JWTCookieDataCodec$JWTFormatter.format(Cookie.scala:718)
        at play.api.mvc.JWTCookieDataCodec.encode(Cookie.scala:577)
        at play.api.mvc.JWTCookieDataCodec.encode$(Cookie.scala:575)
        at play.api.mvc.DefaultJWTCookieDataCodec.encode(Cookie.scala:768)
        at play.api.mvc.FallbackCookieDataCodec.encode(Cookie.scala:742)
        at play.api.mvc.FallbackCookieDataCodec.encode$(Cookie.scala:741)
        at play.api.mvc.DefaultSessionCookieBaker.encode(Session.scala:95)
        at play.api.mvc.CookieBaker.encodeAsCookie(Cookie.scala:414)
        at play.api.mvc.CookieBaker.encodeAsCookie$(Cookie.scala:413)
        at play.api.mvc.DefaultSessionCookieBaker.encodeAsCookie(Session.scala:95)
        at play.api.mvc.Result.$anonfun$bakeCookies$2(Results.scala:297)
        at scala.Option.map(Option.scala:146)
        at play.api.mvc.Result.bakeCookies(Results.scala:296)
        at play.core.server.common.ServerResultUtils.prepareCookies(ServerResultUtils.scala:227)
        at play.core.server.AkkaHttpServer.$anonfun$executeAction$3(AkkaHttpServer.scala:302)
        at akka.http.scaladsl.util.FastFuture$.strictTransform$1(FastFuture.scala:41)
        at akka.http.scaladsl.util.FastFuture$.transformWith$extension1(FastFuture.scala:55)
        at akka.http.scaladsl.util.FastFuture$.flatMap$extension(FastFuture.scala:26)
        at play.core.server.AkkaHttpServer.executeAction(AkkaHttpServer.scala:301)
        at play.core.server.AkkaHttpServer.executeHandler(AkkaHttpServer.scala:254)
        at play.core.server.AkkaHttpServer.handleRequest(AkkaHttpServer.scala:200)
        at play.core.server.AkkaHttpServer.$anonfun$createServerBinding$3(AkkaHttpServer.scala:106)
        at akka.stream.impl.fusing.MapAsync$$anon$23.onPush(Ops.scala:1172)
        at akka.stream.impl.fusing.GraphInterpreter.processPush(GraphInterpreter.scala:499)
        at akka.stream.impl.fusing.GraphInterpreter.processEvent(GraphInterpreter.scala:462)
        at akka.stream.impl.fusing.GraphInterpreter.execute(GraphInterpreter.scala:368)
        at akka.stream.impl.fusing.GraphInterpreterShell.runBatch(ActorGraphInterpreter.scala:571)
        at akka.stream.impl.fusing.GraphInterpreterShell$AsyncInput.execute(ActorGraphInterpreter.scala:457)
        at akka.stream.impl.fusing.GraphInterpreterShell.processEvent(ActorGraphInterpreter.scala:546)
        at akka.stream.impl.fusing.ActorGraphInterpreter.akka$stream$impl$fusing$ActorGraphInterpreter$$processEvent(ActorGraphInterpreter.scala:725)
        at akka.stream.impl.fusing.ActorGraphInterpreter$$anonfun$receive$1.applyOrElse(ActorGraphInterpreter.scala:740)
        at akka.actor.Actor.aroundReceive(Actor.scala:514)
        at akka.actor.Actor.aroundReceive$(Actor.scala:512)
        at akka.stream.impl.fusing.ActorGraphInterpreter.aroundReceive(ActorGraphInterpreter.scala:650)
        at akka.actor.ActorCell.receiveMessage(ActorCell.scala:527)
        at akka.actor.ActorCell.invoke(ActorCell.scala:496)
        at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
        at akka.dispatch.Mailbox.run(Mailbox.scala:224)
        at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
        at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
        at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)