java.lang.UnsupportedClassVersionError: com/android/build/gradle/AppPlugin : U nsupported major.minor version 52.0

[falbertp]

Hi, please help, trying gradlew clean assembleDebug got error:

FAILURE: Build failed with an exception.

• Where:
  Build file 'D:\Frank\workspace\card.io\card.io-Android-source\SampleApp\build.gr
  adle' line: 14

• What went wrong:
  A problem occurred evaluating project ':SampleApp'.

  java.lang.UnsupportedClassVersionError: com/android/build/gradle/AppPlugin : U
  nsupported major.minor version 52.0

• Exception is:
  org.gradle.api.GradleScriptException: A problem occurred evaluating project ':Sa
  mpleApp'.
  at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptR
  unnerImpl.run(DefaultScriptRunnerFactory.java:93)
  at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl$
  2.run(DefaultScriptPluginFactory.java:177)
  at org.gradle.configuration.ProjectScriptTarget.addConfiguration(Project
  ScriptTarget.java:77)
  at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl.
  apply(DefaultScriptPluginFactory.java:182)
  at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildSc
  riptProcessor.java:38)
  at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildSc
  riptProcessor.java:25)
  at org.gradle.configuration.project.ConfigureActionsProjectEvaluator.eva
  luate(ConfigureActionsProjectEvaluator.java:34)
  at org.gradle.configuration.project.LifecycleProjectEvaluator.evaluate(L
  ifecycleProjectEvaluator.java:55)
  at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProj
  ect.java:540)
  at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProj
  ect.java:93)
  at org.gradle.execution.TaskPathProjectEvaluator.configureHierarchy(Task
  PathProjectEvaluator.java:47)
  at org.gradle.configuration.DefaultBuildConfigurer.configure(DefaultBuil
  dConfigurer.java:35)
  at org.gradle.initialization.DefaultGradleLauncher$2.run(DefaultGradleLa
  uncher.java:124)
  at org.gradle.internal.Factories$1.create(Factories.java:22)
  at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(Defaul
  tBuildOperationExecutor.java:91)
  at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(Defaul
  tBuildOperationExecutor.java:53)
  at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(Default
  GradleLauncher.java:121)
  at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGra
  dleLauncher.java:32)
  at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradl
  eLauncher.java:98)
  at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradl
  eLauncher.java:92)
  at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(Defaul
  tBuildOperationExecutor.java:91)
  at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(Defaul
  tBuildOperationExecutor.java:63)
  at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradle
  Launcher.java:92)
  at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLaun
  cher.java:83)
  at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildCon
  troller.run(InProcessBuildActionExecuter.java:99)
  at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(Exe
  cuteBuildActionRunner.java:28)
  at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildA
  ctionRunner.java:35)
  at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProce
  ssBuildActionExecuter.java:48)
  at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProce
  ssBuildActionExecuter.java:30)
  at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(Contin
  uousBuildActionExecuter.java:81)
  at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(Contin
  uousBuildActionExecuter.java:46)
  at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBu
  ild.java:52)
  at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(Build
  CommandOnly.java:36)
  at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(
  DaemonCommandExecution.java:120)
  at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(
  WatchForDisconnection.java:37)
  at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(
  DaemonCommandExecution.java:120)
  at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute
  (ResetDeprecationLogger.java:26)
  at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(
  DaemonCommandExecution.java:120)
  at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.
  execute(RequestStopIfSingleUsedDaemon.java:34)
  at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(
  DaemonCommandExecution.java:120)
  at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(Forw
  ardClientInput.java:74)
  at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(Forw
  ardClientInput.java:72)
  at org.gradle.util.Swapper.swap(Swapper.java:38)
  at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(For
  wardClientInput.java:72)
  at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(
  DaemonCommandExecution.java:120)
  at org.gradle.launcher.daemon.server.health.DaemonHealthTracker.execute(
  DaemonHealthTracker.java:47)
  at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(
  DaemonCommandExecution.java:120)
  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:36)
  at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(
  DaemonCommandExecution.java:120)
  at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBu
  ild(EstablishBuildEnvironment.java:72)
  at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(Build
  CommandOnly.java:36)
  at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(
  DaemonCommandExecution.java:120)
  at org.gradle.launcher.daemon.server.health.HintGCAfterBuild.execute(Hin
  tGCAfterBuild.java:41)
  at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(
  DaemonCommandExecution.java:120)
  at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.
  run(StartBuildOrRespondWithBusy.java:50)
  at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(Daemon
  StateCoordinator.java:237)
  at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.
  onExecute(ExecutorPolicy.java:54)
  at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableE
  xecutorImpl.java:40)
  Caused by: com.google.common.util.concurrent.ExecutionError: java.lang.Unsupport
  edClassVersionError: com/android/build/gradle/AppPlugin : Unsupported major.mino
  r version 52.0
  at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2199)
  at com.google.common.cache.LocalCache.get(LocalCache.java:3934)
  at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938)
  at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.j
  ava:4821)
  at org.gradle.api.internal.plugins.DefaultPluginRegistry.uncheckedGet(De
  faultPluginRegistry.java:149)
  at org.gradle.api.internal.plugins.DefaultPluginRegistry.lookup(DefaultP
  luginRegistry.java:144)
  at org.gradle.api.internal.plugins.DefaultPluginRegistry.lookup(DefaultP
  luginRegistry.java:127)
  at org.gradle.api.internal.plugins.DefaultPluginManager.apply(DefaultPlu
  ginManager.java:108)
  at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.appl
  yType(DefaultObjectConfigurationAction.java:113)
  at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.acce
  ss$200(DefaultObjectConfigurationAction.java:36)
  at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction$3.ru
  n(DefaultObjectConfigurationAction.java:80)
  at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.exec
  ute(DefaultObjectConfigurationAction.java:136)
  at org.gradle.api.internal.project.AbstractPluginAware.apply(AbstractPlu
  ginAware.java:46)
  at org.gradle.api.internal.project.ProjectScript.apply(ProjectScript.jav
  a:34)
  at org.gradle.api.Script$apply$0.callCurrent(Unknown Source)
  at build_267mcp3um5tzjv8lwgd3q85gz.run(D:\Frank\workspace\card.io\card.i
  o-Android-source\SampleApp\build.gradle:14)
  at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptR
  unnerImpl.run(DefaultScriptRunnerFactory.java:91)
  ... 58 more
  Caused by: java.lang.UnsupportedClassVersionError: com/android/build/gradle/AppP
  lugin : Unsupported major.minor version 52.0
  at org.gradle.api.internal.plugins.DefaultPluginRegistry$1.load(DefaultP
  luginRegistry.java:71)
  at org.gradle.api.internal.plugins.DefaultPluginRegistry$1.load(DefaultP
  luginRegistry.java:51)
  at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(L
  ocalCache.java:3524)
  at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2
  317)
  at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache
  .java:2280)
  at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2195)
  ... 74 more

[lkorth]

This is an Android SDK issue, not a dmz issue.

What version of Java were you using to build? What version of the gradle build plugin?