Gradle fails on jdk8 with java.lang.ClassNotFoundException: java.util.HashMap$Entry

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1

Gradle 1.9 fails parsing my build file when running with jdk8. Runs perfectly with jdk7.

* Exception is:
org.gradle.api.GradleScriptException: A problem occurred evaluating root project 'plumbr'.
 at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:54)
 at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl.apply(DefaultScriptPluginFactory.java:132)
 at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:38)
 at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:25)
 at org.gradle.configuration.project.ConfigureActionsProjectEvaluator.evaluate(ConfigureActionsProjectEvaluator.java:34)
 at org.gradle.configuration.project.LifecycleProjectEvaluator.evaluate(LifecycleProjectEvaluator.java:55)
 at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProject.java:507)
 at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProject.java:82)
 at org.gradle.configuration.DefaultBuildConfigurer.configure(DefaultBuildConfigurer.java:31)
 at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:142)
 at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:113)
 at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:81)
 at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:64)
 at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33)
 at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24)
 at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:35)
 at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:45)
 at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:42)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:24)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.StartStopIfBuildAndStop.execute(StartStopIfBuildAndStop.java:33)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.ReturnResult.execute(ReturnResult.java:34)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:71)
 at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:69)
 at org.gradle.util.Swapper.swap(Swapper.java:38)
 at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:69)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
 at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:60)
 at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:45)
 at org.gradle.launcher.daemon.server.DaemonStateCoordinator.runCommand(DaemonStateCoordinator.java:186)
 at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy.doBuild(StartBuildOrRespondWithBusy.java:49)
 at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.HandleStop.execute(HandleStop.java:36)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.DaemonHygieneAction.execute(DaemonHygieneAction.java:36)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.CatchAndForwardDaemonFailure.execute(CatchAndForwardDaemonFailure.java:32)
 at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
 at org.gradle.launcher.daemon.server.exec.DefaultDaemonCommandExecuter.executeCommand(DefaultDaemonCommandExecuter.java:51)
 at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.handleCommand(DefaultIncomingConnectionHandler.java:155)
 at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.receiveAndHandleCommand(DefaultIncomingConnectionHandler.java:128)
 at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.run(DefaultIncomingConnectionHandler.java:116)
 at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:66)
Caused by: java.lang.NoClassDefFoundError: [Ljava/util/HashMap$Entry;
 at build_2ouql06t243s8jhits4ls80m47.run(/Users/Nikem/Documents/workspace/plumbr/build.gradle:41)
 at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:52)
 ... 53 more
Caused by: java.lang.ClassNotFoundException: java.util.HashMap$Entry
 ... 55 more

The relevant part of the script follows:

40: def configFile = file("$rootDir/gradle/buildConfig.groovy")
41: def parsedConfig = new ConfigSlurper(env).parse(configFile.toURL())
42:
 43: println parsedConfig
2

From what I know, this is an incompatibility between ‘ConfigSlurper’ and JDK8. It should go away once Gradle 2.0 makes the jump to Groovy 2.x. (Note that Groovy 2.3 is the first Groovy version to officially support JDK8.)

3

FYI, still fails in gradle-2.0-20140422220019+0000

4

I don’t think we’ve made the jump to Groovy 2.3 yet.

5

Is there any way to monitor/watch this? :slight_smile: I would like to test fixed version whenever it becomes available.

6

We plan to add JDK8 and Groovy 2.x support for Gradle 2.0. So testing the first 2.0 release candidate would work. Expect it some time in June.

7

Nikita Salnikov-Tarnovski, http://forums.gradle.org/gradle/topics/using_a_map_in_build_gradle_throws_noclassdeffounderror_ljava_util_hashmap_entry?utm_source=notification&utm_medium=email&utm_campaign=new_reply&utm_content=topic_link

8

Also worth noting “myfile.toURL()” was deprecated in 1.7.

Instead use “myFile.toURI().toURL()”