# Java.lang.ClassCastException with android studio + gradle **URL:** \ **Category:** Old Forum Archive\ **Created:** [December 11, 2013, 1:54pm UTC](https://discuss.gradle.org/t/java-lang-classcastexception-with-android-studio-gradle/1469 "2013-12-11T13:54:00Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Anatoly](https://avatars.discourse-cdn.com/v4/letter/a/76d3ee/32.png) [@Anatoly](https://discuss.gradle.org/u/Anatoly)\ **Post date:** [December 11, 2013, 1:54pm UTC](https://discuss.gradle.org/t/java-lang-classcastexception-with-android-studio-gradle/1469/1 "2013-12-11T13:54:00Z")
today i faced with the problem i use android studio 0.3.7 with gradle-1.8 on win 7 x64 i have jdk 1.7u45, jre 7, jdk 1.6u35 and jr6 (this installed automaticly by some software) on compileRelease stage of one module i have next error: FAILURE: Build aborted because of an internal error. - What went wrong: Build aborted because of an unexpected internal error. Please file an issue at: [http://forums.gradle.org](http://forums.gradle.org). - Try: Run with --debug option to get additional debug info. - Exception is: java.lang.ClassCastException: org.gradle.api.internal.changedetection.state.Defa ultFileSnapshotter$FileCollectionSnapshotImpl cannot be cast to org.gradle.api.i nternal.changedetection.state.OutputFilesSnapshotter$OutputFilesSnapshot at org.gradle.api.internal.changedetection.state.OutputFilesSnapshotter$ OutputFilesSnapshot.iterateChangesSince(OutputFilesSnapshotter.java:103) at org.gradle.api.internal.changedetection.rules.OutputFilesStateChangeR ule$1$1.(OutputFilesStateChangeRule.java:44) at org.gradle.api.internal.changedetection.rules.OutputFilesStateChangeR ule$1.iterator(OutputFilesStateChangeRule.java:43) at org.gradle.api.internal.changedetection.rules.CachingTaskStateChanges .reset(CachingTaskStateChanges.java:79) at org.gradle.api.internal.changedetection.rules.CachingTaskStateChanges .iterator(CachingTaskStateChanges.java:44) at org.gradle.api.internal.changedetection.rules.SummaryTaskStateChanges .firstDirtyIterator(SummaryTaskStateChanges.java:63) at org.gradle.api.internal.changedetection.rules.SummaryTaskStateChanges .access$000(SummaryTaskStateChanges.java:25) at org.gradle.api.internal.changedetection.rules.SummaryTaskStateChanges $1.computeNext(SummaryTaskStateChanges.java:49) at org.gradle.api.internal.changedetection.rules.SummaryTaskStateChanges $1.computeNext(SummaryTaskStateChanges.java:42) at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractI terator.java:143) at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.j ava:138) at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactSt ateRepository$TaskArtifactStateImpl.getChangeMessages(DefaultTaskArtifactStateRe pository.java:80) at org.gradle.api.internal.changedetection.changes.DefaultTaskArtifactSt ateRepository$TaskArtifactStateImpl.isUpToDate(DefaultTaskArtifactStateRepositor y.java:69) at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.exec ute(SkipUpToDateTaskExecuter.java:52) at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execut e(ValidatingTaskExecuter.java:58) at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecu ter.execute(SkipEmptySourceFilesTaskExecuter.java:42) at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter .execute(SkipTaskWithNoActionsExecuter.java:52) at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execut e(SkipOnlyIfTaskExecuter.java:53) at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter .execute(ExecuteAtMostOnceTaskExecuter.java:43) at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailur e(AbstractTask.java:283) at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorW orker.executeTask(AbstractTaskPlanExecutor.java:79) at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorW orker.processTask(AbstractTaskPlanExecutor.java:63) at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorW orker.run(AbstractTaskPlanExecutor.java:51) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$1.run(DefaultT askPlanExecutor.java:33) at org.gradle.internal.Factories$1.create(Factories.java:22) at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(Def aultCacheAccess.java:214) at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(Def aultCacheAccess.java:276) at org.gradle.cache.internal.DefaultPersistentDirectoryStore.longRunning Operation(DefaultPersistentDirectoryStore.java:142) at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStat eCacheAccess.longRunningOperation(DefaultTaskArtifactStateCacheAccess.java:78) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(Defaul tTaskPlanExecutor.java:31) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(Defau ltTaskGraphExecuter.java:86) at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTask ExecutionAction.java:29) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecute r.java:61) at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExec uter.java:23) at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecu ter.java:67) at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildEx ecutionAction.java:32) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecute r.java:61) at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecute r.java:54) at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(Default GradleLauncher.java:166) at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradle Launcher.java:113) at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLaun cher.java:81) at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildCon troller.run(InProcessBuildActionExecuter.java:64) at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.jav a:33) at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.jav a:24) at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProce ssBuildActionExecuter.java:35) at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBu ild.java:45) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(Build CommandOnly.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.execut e(StartStopIfBuildAndStop.java:33) at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed (DaemonCommandExecution.java:125) at org.gradle.launcher.daemon.server.exec.ReturnResult.execute(ReturnRes ult.java:34) at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed (DaemonCommandExecution.java:125) at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(Forw ardClientInput.java:71) at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(Forw ardClientInput.java:69) at org.gradle.util.Swapper.swap(Swapper.java:38) at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(For wardClientInput.java:69) at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed (DaemonCommandExecution.java:125) at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClien t.java:60) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(Build CommandOnly.java:34) at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed (DaemonCommandExecution.java:125) at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBu ild(EstablishBuildEnvironment.java:59) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(Build CommandOnly.java:34) at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed (DaemonCommandExecution.java:125) at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1. run(StartBuildOrRespondWithBusy.java:45) at org.gradle.launcher.daemon.server.DaemonStateCoordinator.runCommand(D aemonStateCoordinator.java:186) at [org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy.do](http://org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy.do) Build(StartBuildOrRespondWithBusy.java:49) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(Build CommandOnly.java:34) at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed (DaemonCommandExecution.java:125) at org.gradle.launcher.daemon.server.exec.HandleStop.execute(HandleStop. java:36) at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed (DaemonCommandExecution.java:125) at org.gradle.launcher.daemon.server.exec.CatchAndForwardDaemonFailure.e xecute(CatchAndForwardDaemonFailure.java:32) at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed (DaemonCommandExecution.java:125) at org.gradle.launcher.daemon.server.exec.DefaultDaemonCommandExecuter.e xecuteCommand(DefaultDaemonCommandExecuter.java:48) at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$Co nnectionWorker.handleCommand(DefaultIncomingConnectionHandler.java:155) at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$Co nnectionWorker.receiveAndHandleCommand(DefaultIncomingConnectionHandler.java:128 ) at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$Co nnectionWorker.run(DefaultIncomingConnectionHandler.java:116) at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecut orImpl$1.run(DefaultExecutorFactory.java:66) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor. java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor .java:615) at java.lang.Thread.run(Thread.java:724) BUILD FAILED i try clean (gradlw clean, physical remove all caches from disk, remove gradle cache, remove gradle and download it again), but error still there and i cannot compile my project. in project exist several modules, and all previous modules compiled success ---
**Author:** ![hisetu\_Chang](https://sea1.discourse-cdn.com/gradle/user_avatar/discuss.gradle.org/hisetu_chang/32/1386_2.png) [@hisetu\_Chang](https://discuss.gradle.org/u/hisetu_Chang)\ **Post date:** [January 18, 2014, 3:02am UTC](https://discuss.gradle.org/t/java-lang-classcastexception-with-android-studio-gradle/1469/2 "2014-01-18T03:02:00Z")
1.delete {project dir}/.gradle/1.9 2.Sync Project with Gradle File ---
**Author:** ![NetDroid\_jayesh](https://avatars.discourse-cdn.com/v4/letter/n/3ec8ea/32.png) [@NetDroid\_jayesh](https://discuss.gradle.org/u/NetDroid_jayesh)\ **Post date:** [October 15, 2014, 5:59am UTC](https://discuss.gradle.org/t/java-lang-classcastexception-with-android-studio-gradle/1469/3 "2014-10-15T05:59:00Z")
Thanks. It works for me