Scala and Java 8 in the same project?

Posted October 23, 20159 yr

Has anyone managed to get Scala and Java 8 working in the same project? I've got a test mod here that's configured to compile both Scala and Java through the Scala plugin, but the compiler fails when it encounters Java 8 features like static methods in interfaces.

This is what

gradlew --stacktrace build

outputs:

****************************

http://modcoderpack.com/

Searge, ProfMobius, Fesh0r,

R4wk, ZeuX, IngisKahn, bspkrs

MCP Data version : 9.10

****************************

:deobfCompileDummyTask

:deobfProvidedDummyTask

:compileApiJava UP-TO-DATE

:compileApiScala UP-TO-DATE

:processApiResources UP-TO-DATE

:apiClasses UP-TO-DATE

:sourceMainJava UP-TO-DATE

:compileJava UP-TO-DATE

:sourceMainScala UP-TO-DATE

:compileScalaC:\Users\USER\Documents\Minecraft\ScalaJava8Test\build\sources\main\scala\com\choonster\scalajava8test\TestInterface.java:11: `;' expected but `{' found.

static void callScalaFunction(Function1<String, Unit> function) {

one error found

FAILED

FAILURE: Build failed with an exception.

* What went wrong:

Execution failed for task ':compileScala'.

> Compilation failed

* Try:

Run with --info or --debug option to get more log output.

* Exception is:

org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':compileScala'.

at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)

at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)

at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)

at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)

at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)

at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)

at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)

at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)

at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)

at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:208)

at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:186)

at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:62)

at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:50)

at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:25)

at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:111)

at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)

at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)

at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)

at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:68)

at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)

at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)

at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:55)

at org.gradle.initialization.DefaultGradleLauncher$6.run(DefaultGradleLauncher.java:174)

at org.gradle.internal.Factories$1.create(Factories.java:22)

at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:62)

at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:47)

at org.gradle.initialization.DefaultGradleLauncher.runBuildOperation(DefaultGradleLauncher.java:189)

at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:171)

at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:35)

at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:104)

at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:97)

at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:62)

at org.gradle.initialization.DefaultGradleLauncher.runRootBuildOperation(DefaultGradleLauncher.java:184)

at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:97)

at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:86)

at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:93)

at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)

at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)

at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:43)

at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:27)

at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:72)

at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:44)

at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:50)

at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:27)

at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:40)

at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:170)

at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:237)

at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:210)

at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:35)

at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)

at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)

at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)

at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)

at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)

at org.gradle.launcher.Main.doAction(Main.java:33)

at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)

at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)

at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)

at org.gradle.launcher.GradleMain.main(GradleMain.java:23)

at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:30)

at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:127)

at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)

Caused by: org.gradle.api.internal.tasks.compile.CompilationFailedException: Compilation failed

at org.gradle.api.internal.tasks.scala.ZincScalaCompiler$Compiler.execute(ZincScalaCompiler.java:71)

at org.gradle.api.internal.tasks.scala.ZincScalaCompiler.execute(ZincScalaCompiler.java:48)

at org.gradle.api.internal.tasks.scala.ZincScalaCompiler.execute(ZincScalaCompiler.java:37)

at org.gradle.api.internal.tasks.compile.daemon.CompilerDaemonServer.execute(CompilerDaemonServer.java:53)

at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)

at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)

at org.gradle.messaging.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:360)

at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)

at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)

Caused by: Compilation failed

at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:105)

at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:48)

at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:41)

at sbt.compiler.AggressiveCompile$$anonfun$3$$anonfun$compileScala$1$1.apply$mcV$sp(AggressiveCompile.scala:99)

at sbt.compiler.AggressiveCompile$$anonfun$3$$anonfun$compileScala$1$1.apply(AggressiveCompile.scala:99)

at sbt.compiler.AggressiveCompile.sbt$compiler$AggressiveCompile$$timed(AggressiveCompile.scala:166)

at sbt.compiler.AggressiveCompile$$anonfun$3.compileScala$1(AggressiveCompile.scala:98)

at sbt.compiler.AggressiveCompile$$anonfun$3.apply(AggressiveCompile.scala:143)

at sbt.compiler.AggressiveCompile$$anonfun$3.apply(AggressiveCompile.scala:87)

at sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:39)

at sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:37)

at sbt.inc.IncrementalCommon.cycle(Incremental.scala:99)

at sbt.inc.Incremental$$anonfun$1.apply(Incremental.scala:38)

at sbt.inc.Incremental$$anonfun$1.apply(Incremental.scala:37)

at sbt.inc.Incremental$.manageClassfiles(Incremental.scala:65)

at sbt.inc.Incremental$.compile(Incremental.scala:37)

at sbt.inc.IncrementalCompile$.apply(Compile.scala:27)

at sbt.compiler.AggressiveCompile.compile2(AggressiveCompile.scala:157)

at sbt.compiler.AggressiveCompile.compile1(AggressiveCompile.scala:71)

at com.typesafe.zinc.Compiler.compile(Compiler.scala:193)

at com.typesafe.zinc.Compiler.compile(Compiler.scala:174)

at com.typesafe.zinc.Compiler.compile(Compiler.scala:165)

at org.gradle.api.internal.tasks.scala.ZincScalaCompiler$Compiler.execute(ZincScalaCompiler.java:69)

... 8 more

BUILD FAILED

Total time: 8.315 secs

Attempting to run the client in IDEA outputs the following errors:

Error: scalac: 'jvm-1.8' is not a valid choice for '-target'
Error: scalac: bad option: '-target:jvm-1.8'

I'd like to get this working in mixed compilation mode (the default) so Java and Scala code can reference each other in either direction.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

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How to add my mob to another mod's biome in 1.20.1.

tysm

By ilov3gam3z · 9 hours ago9 hr
Orbital strike cannon fishing rod mod

was focused on school so didnt respond u think ur gonna get 1.21+ done by this week? @FoxyWoxy

By Astoxy · 16 hours ago16 hr
How to add my mob to another mod's biome in 1.20.1.

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{ "type": "forge:add_spawns", // Required "biomes": "#namespace:biome_tag", // Accepts a biome id, [list of biome ids], or #namespace:biome_tag "spawners": { "type": "namespace:entity_type", // Type of mob to spawn "weight": 100, // int, spawn weighting "minCount": 1, // int, minimum pack size "maxCount": 4 // int, maximum pack size } }This JSON file would go somewhere like this: data/modid/forge/biome_modifier/your_biome_modifier.json

By Jonathing · Yesterday at 12:10 AM1 day
How to change player renderer and transform model parts?

I have been trying for a while now to make a custom player renderer, and replace the vanilla player renderer with it. So far I've come up with a custom player renderer class that extends vanilla PlayerRenderer:
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By FireDude123 · Posted Thursday at 12:07 AM2 days
How to add my mob to another mod's biome in 1.20.1.

I'm on 1.20.1 and was wondering if there was a way to add a mob I am going to make to a other mod's biome (Regions Unexplored in this case). I am trying to figure this out before I start coding the mod. Could someone point me to a good guide on this? I saw some things about biome modifier's but all the resources are either to short, unhelpful or for a different version. Thanks in advance. (i am a beginner but i have java and modding knowledge so this isn't like a "i am new and don't know anything about coding" problem btw)

By ilov3gam3z · Posted Wednesday at 04:08 PM2 days

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Scala and Java 8 in the same project?

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