title: Android studio failed to complete Gradle execution
body: <p>I have updated my android studio version to 2.2 and I was receiving error on project startup:</p>
  
  <pre><code>Gradle project refresh failed.
  </code></pre>
  
  <p>So I have searched about the problem and installed the Java SE Development Kit 8u101 and set JDK location to it.
  After doing this error appeared :</p>
  
  <pre><code>    Information:Gradle tasks [:app:generateDebugSources, :app:mockableAndroidJar, :app:prepareDebugUnitTestDependencies, :app:generateDebugAndroidTestSources]
  Error:Failed to complete Gradle execution. Cause: unknown.
  </code></pre>
  
  <p>I am stuck with this gradle execution error. I have uninstalled the android studio which I have updated and installed the new one.
  I am also facing the above issues in newly installed version of android studio 2.2.
  For now JDK location</p>
  
  <pre><code>C:\Program Files\Java\jdk1.8.0_101
  </code></pre>
  
  <p>And inside gradle.properties</p>
  
  <pre><code>org.gradle.jvmargs=-Xmx256m
  </code></pre>
  
  <p>My system configurations are :</p>
  
  <p>Processor -> intel core i3, RAM -> 4 gb, OS Type -> 32 bit Windows 7 Ultimate OS</p>
  
  <p>Gradle console with --stacktrace --debug:</p>
  
  <pre><code>Error:Cause: java.lang.NullPointerException
  at java.util.Objects.requireNonNull(Objects.java:203)
  at java.util.Arrays$ArrayList.&lt;init&gt;(Arrays.java:3813)
  at java.util.Arrays.asList(Arrays.java:3800)
  at com.intellij.openapi.util.io.FileUtilRt.doCreateTempFile(FileUtilRt.java:399)
  at com.intellij.openapi.util.io.FileUtilRt.createTempFile(FileUtilRt.java:361)
  at com.intellij.openapi.util.io.FileUtilRt.createTempFile(FileUtilRt.java:341)
  at com.intellij.openapi.util.io.FileUtilRt.createTempFile(FileUtilRt.java:334)
  at com.intellij.openapi.util.io.FileUtil.createTempFile(FileUtil.java:1479)
  at com.android.tools.idea.gradle.util.GradleUtil.addInitScriptCommandLineOption(GradleUtil.java:1064)
  at com.android.tools.idea.gradle.util.GradleUtil.addLocalMavenRepoInitScriptCommandLineOption(GradleUtil.java:1057)
  at com.android.tools.idea.gradle.util.GradleUtil.addLocalMavenRepoInitScriptCommandLineOption(GradleUtil.java:1023)
  at com.android.tools.idea.gradle.project.AndroidGradleProjectResolver.getExtraCommandLineArgs(AndroidGradleProjectResolver.java:345)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.doResolveProjectInfo(GradleProjectResolver.java:175)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.access$300(GradleProjectResolver.java:73)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver$ProjectConnectionDataNodeFunction.fun(GradleProjectResolver.java:768)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver$ProjectConnectionDataNodeFunction.fun(GradleProjectResolver.java:752)
  at org.jetbrains.plugins.gradle.service.execution.GradleExecutionHelper.execute(GradleExecutionHelper.java:238)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:112)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:73)
  at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl$1.produce(RemoteExternalSystemProjectResolverImpl.java:41)
  at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl$1.produce(RemoteExternalSystemProjectResolverImpl.java:37)
  at com.intellij.openapi.externalSystem.service.remote.AbstractRemoteExternalSystemService.execute(AbstractRemoteExternalSystemService.java:59)
  at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl.resolveProjectInfo(RemoteExternalSystemProjectResolverImpl.java:37)
  at com.intellij.openapi.externalSystem.service.remote.wrapper.ExternalSystemProjectResolverWrapper.resolveProjectInfo(ExternalSystemProjectResolverWrapper.java:49)
  at com.intellij.openapi.externalSystem.service.internal.ExternalSystemResolveProjectTask.doExecute(ExternalSystemResolveProjectTask.java:51)
  at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:138)
  at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:124)
  at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$3.execute(ExternalSystemUtil.java:419)
  at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$4$2.run(ExternalSystemUtil.java:500)
  at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:563)
  at com.intellij.openapi.progress.impl.CoreProgressManager$2.run(CoreProgressManager.java:142)
  at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:446)
  at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:392)
  at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
  at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:127)
  at com.intellij.openapi.progress.impl.ProgressManagerImpl$1.run(ProgressManagerImpl.java:126)
  at com.intellij.openapi.application.impl.ApplicationImpl$8.run(ApplicationImpl.java:369)
  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
  at java.lang.Thread.run(Thread.java:745)
  </code></pre>
  
  <p>Please help.</p>