IssueTracker

Build: AI-202.7660.26.42.7322048, 202104290118,

AI-202.7660.26.42.7322048, JRE 1.8.0_144-b01x64 Oracle Corporation, OS Mac OS X(x86_64) v10.16, screens 1280x800, 1680x1050; Retina

AS: 4.2; Kotlin plugin: 202-1.5.0-release-764-AS8194.7; Android Gradle Plugin: 4.2.0; Gradle: 6.7.1; NDK: from local.properties: (not specified), latest from SDK: (not found); LLDB: LLDB 3.1 (revision: 3.1.4508709); CMake: from local.properties: (not specified), latest from SDK: 3.18.1-g262b901, from PATH: (not found)

I was using Android Studio 4.1.2 with the JDK version configured in file ~/Library/Application\ Support/Google/AndroidStudio4.1/studio.jdk. When upgrading to 4.2 this setting was copied over to ~/Library/Application\ Support/Google/AndroidStudio4.2/studio.jdk and Android Studio continues to run with Java 8 as shown above. The IDE loads and basic functionality seems to work, but avdmanager does not work, showing the following symptoms:

• The device selection dropdown is greyed out with text "Loading devices ..."
• Running "AVD Manager" from the toolbar icon or the menu, fails without any noticeable user feedback other than the small error warning icon in the bottom right corner of the window (that is easily overlooked).

If you click on the Error icon, and open the "IDE Fatal Errors" window, you see the following stack trace:

java.lang.NoClassDefFoundError: org/w3c/dom/ElementTraversal
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:642)
	at com.intellij.util.lang.UrlClassLoader._defineClass(UrlClassLoader.java:419)
	at com.intellij.util.lang.UrlClassLoader.defineClass(UrlClassLoader.java:411)
	at com.intellij.util.lang.UrlClassLoader._findClass(UrlClassLoader.java:369)
	at com.intellij.util.lang.UrlClassLoader.findClass(UrlClassLoader.java:355)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at org.apache.xerces.parsers.AbstractDOMParser.startDocument(Unknown Source)
	at org.apache.xerces.impl.dtd.XMLDTDValidator.startDocument(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentScannerImpl.startEntity(Unknown Source)
	at org.apache.xerces.impl.XMLVersionDetector.startDocumentParsing(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
	at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
	at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:121)
	at com.android.dvlib.DeviceSchema.getXmlSchemaVersion(DeviceSchema.java:398)
	at com.android.sdklib.devices.DeviceParser.parseImpl(DeviceParser.java:496)
	at com.android.sdklib.devices.DeviceParser.parse(DeviceParser.java:481)
	at com.android.sdklib.devices.DeviceManager.initDefaultDevices(DeviceManager.java:287)
	at com.android.sdklib.devices.DeviceManager.initDevicesLists(DeviceManager.java:265)
	at com.android.sdklib.devices.DeviceManager.getDevice(DeviceManager.java:198)
	at com.android.sdklib.internal.avd.AvdManager.parseAvdInfo(AvdManager.java:1451)
	at com.android.sdklib.internal.avd.AvdManager.buildAvdList(AvdManager.java:1337)
	at com.android.sdklib.internal.avd.AvdManager.<init>(AvdManager.java:402)
	at com.android.sdklib.internal.avd.AvdManager.getInstance(AvdManager.java:443)
	at com.android.tools.idea.avdmanager.AvdManagerConnection.initIfNecessary(AvdManagerConnection.java:211)
	at com.android.tools.idea.avdmanager.AvdManagerConnection.getAvds(AvdManagerConnection.java:333)
	at com.android.tools.idea.avdmanager.AvdDisplayList.refreshAvds(AvdDisplayList.java:230)
	at com.android.tools.idea.avdmanager.AvdDisplayList.<init>(AvdDisplayList.java:194)
	at com.android.tools.idea.avdmanager.AvdListDialog.<init>(AvdListDialog.java:43)
	at org.jetbrains.android.actions.RunAndroidAvdManagerAction.openAvdManager(RunAndroidAvdManagerAction.java:74)
	at org.jetbrains.android.actions.RunAndroidAvdManagerAction.actionPerformed(RunAndroidAvdManagerAction.java:65)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:282)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAwareWithCallbacks(ActionUtil.java:276)
	at com.intellij.openapi.actionSystem.impl.ActionButton.actionPerformed(ActionButton.java:182)
	at com.intellij.openapi.actionSystem.impl.ActionButton.performAction(ActionButton.java:155)
	at com.intellij.openapi.actionSystem.impl.ActionButton.processMouseEvent(ActionButton.java:439)
	at java.awt.Component.processEvent(Component.java:6298)
	at java.awt.Container.processEvent(Container.java:2236)
	at java.awt.Component.dispatchEventImpl(Component.java:4889)
	at java.awt.Container.dispatchEventImpl(Container.java:2294)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
	at java.awt.Container.dispatchEventImpl(Container.java:2280)
	at java.awt.Window.dispatchEventImpl(Window.java:2746)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
	at java.awt.EventQueue$4.run(EventQueue.java:731)
	at java.awt.EventQueue$4.run(EventQueue.java:729)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:971)
	at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:906)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:838)
	at com.intellij.ide.IdeEventQueue.lambda$null$8(IdeEventQueue.java:452)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:744)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$9(IdeEventQueue.java:451)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:808)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:505)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Caused by: java.lang.ClassNotFoundException: org.w3c.dom.ElementTraversal
	at com.intellij.util.lang.UrlClassLoader.findClass(UrlClassLoader.java:357)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 78 more

AndroidStudioPreview2020.3 from the Canary channel already refuses to start when configured to start with a JDK below 11. I strongly suggest to backport this check to Android Studio 4.2, to prevent the hassles I have gone through for other users (I have spent an evening and half a night on it, because I overlooked that studio.jdk file in the settings).