Android 设备监视器无法从 Android Studio 或终端启动 -- UnsupportedClassVersionError
Android Device Monitor will not launch, either from Android Studio or from Terminal -- UnsupportedClassVersionError
在 Mac.
上尝试从 Android Studio 中的工具 window 启动 Android 设备监视器时出现以下错误
当我打开日志文件时，我发现一个错误报告与其他类似的 SO 问题非常相似，尤其是 this one。但是，使用 sudo 对我不起作用，尽管我得到了类似但更短的错误数据：
Macs-MBP:tools macuser$ sudo ./monitor
Password:
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/android/archquery/Main : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access[=12=]0(URLClassLoader.java:58)
at java.net.URLClassLoader.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
./monitor: line 41: /Users/macuser/Library/Android/sdk/tools/lib/monitor-/monitor.app/Contents/MacOS/monitor: No such file or directory
./monitor: line 41: exec: /Users/macuser/Library/Android/sdk/tools/lib/monitor-/monitor.app/Contents/MacOS/monitor: cannot execute: No such file or directory
背景故事：在这台笔记本电脑 (El Capitan) 上完成全新 Android Studio 安装后，我试图从 IDE 内部启动显示器。它抱怨 运行 它需要 Java 1.6。所以我安装了Java 6。然后当我尝试它时，我得到了上面的错误信息。
当我从终端 java_home -V
运行 时，我得到以下信息
Matching Java Virtual Machines (2):
1.6.0_65-b14-468, x86_64: "Java SE 6" /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
1.6.0_65-b14-468, i386: "Java SE 6" /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
日志文件的内容是（不幸的是，由于 post 的文本输入限制，不得不剔除一些内容）：
!SESSION 2017-03-07 14:46:16.923 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_65
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
Framework arguments: -keyring /Users/macuser/.eclipse_keyring -showlocation
Command-line arguments: -os macosx -ws cocoa -arch x86_64 -data @noDefault -keyring /Users/macuser/.eclipse_keyring -showlocation
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.397
!MESSAGE Bundle reference:file:org.apache.ant_1.8.3.v201301120609/@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.400
!MESSAGE Bundle reference:file:org.apache.jasper.glassfish_2.2.2.v201205150955.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.401
!MESSAGE Bundle reference:file:org.apache.lucene.core_2.9.1.v201101211721.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.424
!MESSAGE Bundle reference:file:org.eclipse.help.base_3.6.101.v201302041200.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.425
!MESSAGE Bundle reference:file:org.eclipse.help.ui_3.5.201.v20130108-092756.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.425
!MESSAGE Bundle reference:file:org.eclipse.help.webapp_3.6.101.v20130116-182509.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.426
!MESSAGE Bundle reference:file:org.eclipse.jetty.server_8.1.3.v20120522.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.429
!MESSAGE Bundle reference:file:org.eclipse.platform.doc.user_4.2.2.v20130121-200410.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.430
!MESSAGE Bundle reference:file:org.eclipse.team.core_3.6.100.v20120524-0627.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.430
!MESSAGE Bundle reference:file:org.eclipse.team.ui_3.6.201.v20130125-135424.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.431
!MESSAGE Bundle reference:file:org.eclipse.ui.cheatsheets_3.4.200.v20120521-2344.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.432
!MESSAGE Bundle reference:file:org.eclipse.ui.intro_3.4.200.v20120521-2344.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.924
!MESSAGE An error occurred while automatically activating bundle com.android.ide.eclipse.monitor (4).
!STACK 0
org.osgi.framework.BundleException: The activator com.android.ide.eclipse.monitor.MonitorPlugin for bundle com.android.ide.eclipse.monitor is invalid
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:172)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:679)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:464)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:191)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
Caused by: java.lang.UnsupportedClassVersionError: com/android/prefs/AndroidLocation$AndroidLocationException : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:188)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClassHoldingLock(ClasspathManager.java:632)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:614)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:568)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:492)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:465)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at com.android.ide.eclipse.monitor.MonitorPlugin.<clinit>(MonitorPlugin.java:28)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:357)
at java.lang.Class.newInstance(Class.java:310)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:167)
... 33 more
!ENTRY org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE One or more bundles are not resolved because the following root constraints are not resolved:
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.equinox.http.jetty_3.0.1.v20121109-203239.jar was not resolved.
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.ssl_[8.0.0,9.0.0).
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.nio_[8.0.0,9.0.0).
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.session_[8.0.0,9.0.0).
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server_[8.0.0,9.0.0).
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.bio_[8.0.0,9.0.0).
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.handler_[8.0.0,9.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.ltk.ui.refactoring_3.7.0.v20120523-1543.jar was not resolved.
!SUBENTRY 2 org.eclipse.ltk.ui.refactoring 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.eclipse.team.core_[3.4.100,4.0.0).
!SUBENTRY 2 org.eclipse.ltk.ui.refactoring 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.eclipse.team.ui_[3.4.100,4.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.platform_4.2.2.v201302041200/ was not resolved.
!SUBENTRY 2 org.eclipse.platform 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.eclipse.ui.intro_[3.2.0,4.0.0).
!SUBENTRY 2 org.eclipse.platform 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required capability Require-Capability: osgi.ee; filter="(|(&(osgi.ee=JavaSE)(version=1.4))(&(osgi.ee=CDC/Foundation)(version=1.0))(&(osgi.ee=JavaSE)(version=1.3)))".
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.ui.intro.universal_3.2.600.v20120912-155524/ was not resolved.
!SUBENTRY 2 org.eclipse.ui.intro.universal 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.eclipse.ui.intro_[3.4.0,4.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.equinox.jsp.jasper_1.0.400.v20120912-130548.jar was not resolved.
!SUBENTRY 2 org.eclipse.equinox.jsp.jasper 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.apache.jasper.servlet_[0.0.0,6.0.0).
!SUBENTRY 2 org.eclipse.equinox.jsp.jasper 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required capability Require-Capability: osgi.ee; filter="(|(&(osgi.ee=CDC/Foundation)(version=1.0))(&(osgi.ee=JavaSE)(version=1.3)))".
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.apache.lucene_2.9.1.v201101211721.jar was not resolved.
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.apache.lucene.core_[2.9.1,3.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.jetty.security_8.1.3.v20120522.jar was not resolved.
!SUBENTRY 2 org.eclipse.jetty.security 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server_[8.1.0,9.0.0).
!SUBENTRY 2 org.eclipse.jetty.security 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.handler_[8.1.0,9.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.apache.lucene.analysis_2.9.1.v201101211721.jar was not resolved.
!SUBENTRY 2 org.apache.lucene.analysis 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.apache.lucene.core_[2.9.1,3.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.jetty.servlet_8.1.3.v20120522.jar was not resolved.
!SUBENTRY 2 org.eclipse.jetty.servlet 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing imported package org.eclipse.jetty.server.handler_[8.1.0,9.0.0).
!SUBENTRY 2 org.eclipse.jetty.servlet 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing imported package org.eclipse.jetty.server.session_[8.1.0,9.0.0).
!SUBENTRY 2 org.eclipse.jetty.servlet 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing imported package org.eclipse.jetty.server.nio_[8.1.0,9.0.0).
!SUBENTRY 2 org.eclipse.jetty.servlet 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing imported package org.eclipse.jetty.server_[8.1.0,9.0.0).
!SUBENTRY 2 org.eclipse.jetty.servlet 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing imported package org.eclipse.jetty.server.ssl_[8.1.0,9.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.018
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.equinox.jsp.jasper.registry_1.0.300.v20120912-130548.jar was not resolved.
!SUBENTRY 2 org.eclipse.equinox.jsp.jasper.registry 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing required capability Require-Capability: osgi.ee; filter="(|(&(osgi.ee=CDC/Foundation)(version=1.0))(&(osgi.ee=JavaSE)(version=1.3)))".
!ENTRY org.eclipse.osgi 2 0 2017-03-07 14:46:18.037
!MESSAGE The following is a complete list of bundles which are not resolved, see the prior log entry for the root cause if it exists:
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.037
!MESSAGE Bundle org.apache.lucene_2.9.1.v201101211721 [24] was not resolved.
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.037
!MESSAGE Missing required bundle org.apache.lucene.core_[2.9.1,3.0.0).
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.037
!MESSAGE Missing optionally required bundle org.apache.lucene.analysis_[2.9.1,3.0.0).
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.037
!MESSAGE Missing optionally required bundle org.apache.lucene.highlighter_[2.9.1,3.0.0).
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.037
!MESSAGE Missing optionally required bundle org.apache.lucene.memory_[2.9.1,3.0.0).
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.037
!MESSAGE Missing optionally required bundle org.apache.lucene.queries_[2.9.1,3.0.0).
. . .
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:18.041
!MESSAGE Application error
!STACK 1
org.eclipse.core.runtime.CoreException: Plug-in com.android.ide.eclipse.monitor was unable to load class com.android.ide.eclipse.monitor.MonitorApplication.
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:194)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:176)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:191)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
Caused by: org.osgi.framework.BundleException: The activator com.android.ide.eclipse.monitor.MonitorPlugin for bundle com.android.ide.eclipse.monitor is invalid
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:172)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:679)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
... 27 more
Caused by: java.lang.UnsupportedClassVersionError: com/android/prefs/AndroidLocation$AndroidLocationException : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:188)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClassHoldingLock(ClasspathManager.java:632)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:614)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:568)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:492)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:465)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at com.android.ide.eclipse.monitor.MonitorPlugin.<clinit>(MonitorPlugin.java:28)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:357)
at java.lang.Class.newInstance(Class.java:310)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:167)
... 33 more
我遇到了同样的问题。根据日志文件，新版本的 Android Studio 需要 Java 8 "Unsupported major.minor version 52.0": Unsupported major.minor version 52.0
我是 运行 Linux，我目前安装了 java8，所以我只需要使用：
update-alternatives --config java
和
update-alternatives --config javac
然后一切正常。
您似乎在使用 Mac，因此在安装 Java 8 后您可能需要也可能不需要执行以下操作：Installed Java 7 on Mac OS X but Terminal is still using version 6
信息来自 Unsupported major.minor version 52.0 来源：维基百科
- J2SE 8 = 52
- J2SE 7 = 51
- J2SE 6.0 = 50
- J2SE 5.0 = 49
- JDK1.4=48
- JDK1.3=47
- JDK1.2=46
- JDK1.1=45
以上答案对我不起作用。我正在使用 JAVA8，Android JAVA_HOME 和 /usr/bin/java。对我来说更奇怪的是我的 tools/ 目录也缺少 uiautomationviewer 工具。所以这让我想知道是不是在安装过程中出了什么问题。
我最后做的是下载旧版本的 SDK 工具
（我按照说明 here），并替换了整个 sdk/tools 文件夹。它奏效了......
令人困惑的是，我没有在共享位置安装 Java 8（只有 Android Studio 中的捆绑版本）。通过自制软件安装它解决了我的问题。
brew cask install java
$ java -version
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)
Android Studio 自带 Java 1.8，因此在开发 android 应用程序时这不是问题。但是，当您启动 Android 设备监视器时，它会使用 OS 上 运行 的外部 java 编译器。如果你之前已经预装了Java，那就没问题了。否则，你将面临同样的问题。
我试图将 JAVA_HOME 路径设置为 Android Studio 中打包的 java。它不起作用，可能是因为它是 openjdk 版本。
我的解决方案是从 Oracle 下载 Java JDK 1.8 并安装在我的电脑上。
如果您打开特定的错误消息，您将看到错误消息的前几行，如下所示。
!SESSION 2017-12-20 08:17:02.597 -----------------------------------------------
eclipse.buildId=unknown
java.version=9.0.1
java.vendor=Oracle Corporation
这就是我得到的。我在 mac 中安装了 java 8 和 9，并将 java 8 作为默认值。根据错误消息 java 虚拟设备使用了 java 9 但它需要 8。这就是问题所在 happened.So 我从我的 machine 中卸载了 java 9然后它开始正常工作。
同样的问题出现在：
macOS 塞拉利昂 10.12.6
Android Studio 3.0.1
解决方法：
正在卸载 Java SE 开发套件 8u152
并且 正在安装 Java SE 开发套件 8u151
来自：http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
尝试右键单击 sdk/tools/monitor.bat 并单击 "run as administrator"
我遇到了同样的问题。 Win10 + JDK 12 + Android SDK。当我运行"monitor.bat"时，也是同样的问题。我猜监控应用程序无法重新定义最新的 java 版本命名约定。
我安装了JRE 8(如下)，问题没有了
c:\>java -version
java version "1.8.0_221"
Java(TM) SE Runtime Environment (build 1.8.0_221-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)
在 Mac.
上尝试从 Android Studio 中的工具 window 启动 Android 设备监视器时出现以下错误当我打开日志文件时，我发现一个错误报告与其他类似的 SO 问题非常相似，尤其是 this one。但是，使用 sudo 对我不起作用，尽管我得到了类似但更短的错误数据：
Macs-MBP:tools macuser$ sudo ./monitor
Password:
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/android/archquery/Main : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access[=12=]0(URLClassLoader.java:58)
at java.net.URLClassLoader.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
./monitor: line 41: /Users/macuser/Library/Android/sdk/tools/lib/monitor-/monitor.app/Contents/MacOS/monitor: No such file or directory
./monitor: line 41: exec: /Users/macuser/Library/Android/sdk/tools/lib/monitor-/monitor.app/Contents/MacOS/monitor: cannot execute: No such file or directory
背景故事：在这台笔记本电脑 (El Capitan) 上完成全新 Android Studio 安装后，我试图从 IDE 内部启动显示器。它抱怨 运行 它需要 Java 1.6。所以我安装了Java 6。然后当我尝试它时，我得到了上面的错误信息。
当我从终端 java_home -V
运行 时，我得到以下信息Matching Java Virtual Machines (2):
1.6.0_65-b14-468, x86_64: "Java SE 6" /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
1.6.0_65-b14-468, i386: "Java SE 6" /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
日志文件的内容是（不幸的是，由于 post 的文本输入限制，不得不剔除一些内容）：
!SESSION 2017-03-07 14:46:16.923 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_65
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
Framework arguments: -keyring /Users/macuser/.eclipse_keyring -showlocation
Command-line arguments: -os macosx -ws cocoa -arch x86_64 -data @noDefault -keyring /Users/macuser/.eclipse_keyring -showlocation
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.397
!MESSAGE Bundle reference:file:org.apache.ant_1.8.3.v201301120609/@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.400
!MESSAGE Bundle reference:file:org.apache.jasper.glassfish_2.2.2.v201205150955.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.401
!MESSAGE Bundle reference:file:org.apache.lucene.core_2.9.1.v201101211721.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.424
!MESSAGE Bundle reference:file:org.eclipse.help.base_3.6.101.v201302041200.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.425
!MESSAGE Bundle reference:file:org.eclipse.help.ui_3.5.201.v20130108-092756.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.425
!MESSAGE Bundle reference:file:org.eclipse.help.webapp_3.6.101.v20130116-182509.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.426
!MESSAGE Bundle reference:file:org.eclipse.jetty.server_8.1.3.v20120522.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.429
!MESSAGE Bundle reference:file:org.eclipse.platform.doc.user_4.2.2.v20130121-200410.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.430
!MESSAGE Bundle reference:file:org.eclipse.team.core_3.6.100.v20120524-0627.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.430
!MESSAGE Bundle reference:file:org.eclipse.team.ui_3.6.201.v20130125-135424.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.431
!MESSAGE Bundle reference:file:org.eclipse.ui.cheatsheets_3.4.200.v20120521-2344.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.432
!MESSAGE Bundle reference:file:org.eclipse.ui.intro_3.4.200.v20120521-2344.jar@4 not found.
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:17.924
!MESSAGE An error occurred while automatically activating bundle com.android.ide.eclipse.monitor (4).
!STACK 0
org.osgi.framework.BundleException: The activator com.android.ide.eclipse.monitor.MonitorPlugin for bundle com.android.ide.eclipse.monitor is invalid
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:172)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:679)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:464)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:191)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
Caused by: java.lang.UnsupportedClassVersionError: com/android/prefs/AndroidLocation$AndroidLocationException : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:188)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClassHoldingLock(ClasspathManager.java:632)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:614)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:568)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:492)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:465)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at com.android.ide.eclipse.monitor.MonitorPlugin.<clinit>(MonitorPlugin.java:28)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:357)
at java.lang.Class.newInstance(Class.java:310)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:167)
... 33 more
!ENTRY org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE One or more bundles are not resolved because the following root constraints are not resolved:
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.equinox.http.jetty_3.0.1.v20121109-203239.jar was not resolved.
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.ssl_[8.0.0,9.0.0).
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.nio_[8.0.0,9.0.0).
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.session_[8.0.0,9.0.0).
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server_[8.0.0,9.0.0).
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.bio_[8.0.0,9.0.0).
!SUBENTRY 2 org.eclipse.equinox.http.jetty 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.handler_[8.0.0,9.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.ltk.ui.refactoring_3.7.0.v20120523-1543.jar was not resolved.
!SUBENTRY 2 org.eclipse.ltk.ui.refactoring 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.eclipse.team.core_[3.4.100,4.0.0).
!SUBENTRY 2 org.eclipse.ltk.ui.refactoring 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.eclipse.team.ui_[3.4.100,4.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.platform_4.2.2.v201302041200/ was not resolved.
!SUBENTRY 2 org.eclipse.platform 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.eclipse.ui.intro_[3.2.0,4.0.0).
!SUBENTRY 2 org.eclipse.platform 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required capability Require-Capability: osgi.ee; filter="(|(&(osgi.ee=JavaSE)(version=1.4))(&(osgi.ee=CDC/Foundation)(version=1.0))(&(osgi.ee=JavaSE)(version=1.3)))".
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.ui.intro.universal_3.2.600.v20120912-155524/ was not resolved.
!SUBENTRY 2 org.eclipse.ui.intro.universal 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.eclipse.ui.intro_[3.4.0,4.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.equinox.jsp.jasper_1.0.400.v20120912-130548.jar was not resolved.
!SUBENTRY 2 org.eclipse.equinox.jsp.jasper 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.apache.jasper.servlet_[0.0.0,6.0.0).
!SUBENTRY 2 org.eclipse.equinox.jsp.jasper 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required capability Require-Capability: osgi.ee; filter="(|(&(osgi.ee=CDC/Foundation)(version=1.0))(&(osgi.ee=JavaSE)(version=1.3)))".
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.apache.lucene_2.9.1.v201101211721.jar was not resolved.
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.apache.lucene.core_[2.9.1,3.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.jetty.security_8.1.3.v20120522.jar was not resolved.
!SUBENTRY 2 org.eclipse.jetty.security 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server_[8.1.0,9.0.0).
!SUBENTRY 2 org.eclipse.jetty.security 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing imported package org.eclipse.jetty.server.handler_[8.1.0,9.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.apache.lucene.analysis_2.9.1.v201101211721.jar was not resolved.
!SUBENTRY 2 org.apache.lucene.analysis 2 0 2017-03-07 14:46:18.017
!MESSAGE Missing required bundle org.apache.lucene.core_[2.9.1,3.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.017
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.jetty.servlet_8.1.3.v20120522.jar was not resolved.
!SUBENTRY 2 org.eclipse.jetty.servlet 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing imported package org.eclipse.jetty.server.handler_[8.1.0,9.0.0).
!SUBENTRY 2 org.eclipse.jetty.servlet 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing imported package org.eclipse.jetty.server.session_[8.1.0,9.0.0).
!SUBENTRY 2 org.eclipse.jetty.servlet 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing imported package org.eclipse.jetty.server.nio_[8.1.0,9.0.0).
!SUBENTRY 2 org.eclipse.jetty.servlet 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing imported package org.eclipse.jetty.server_[8.1.0,9.0.0).
!SUBENTRY 2 org.eclipse.jetty.servlet 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing imported package org.eclipse.jetty.server.ssl_[8.1.0,9.0.0).
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.018
!MESSAGE Bundle initial@reference:file:plugins/org.eclipse.equinox.jsp.jasper.registry_1.0.300.v20120912-130548.jar was not resolved.
!SUBENTRY 2 org.eclipse.equinox.jsp.jasper.registry 2 0 2017-03-07 14:46:18.018
!MESSAGE Missing required capability Require-Capability: osgi.ee; filter="(|(&(osgi.ee=CDC/Foundation)(version=1.0))(&(osgi.ee=JavaSE)(version=1.3)))".
!ENTRY org.eclipse.osgi 2 0 2017-03-07 14:46:18.037
!MESSAGE The following is a complete list of bundles which are not resolved, see the prior log entry for the root cause if it exists:
!SUBENTRY 1 org.eclipse.osgi 2 0 2017-03-07 14:46:18.037
!MESSAGE Bundle org.apache.lucene_2.9.1.v201101211721 [24] was not resolved.
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.037
!MESSAGE Missing required bundle org.apache.lucene.core_[2.9.1,3.0.0).
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.037
!MESSAGE Missing optionally required bundle org.apache.lucene.analysis_[2.9.1,3.0.0).
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.037
!MESSAGE Missing optionally required bundle org.apache.lucene.highlighter_[2.9.1,3.0.0).
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.037
!MESSAGE Missing optionally required bundle org.apache.lucene.memory_[2.9.1,3.0.0).
!SUBENTRY 2 org.apache.lucene 2 0 2017-03-07 14:46:18.037
!MESSAGE Missing optionally required bundle org.apache.lucene.queries_[2.9.1,3.0.0).
. . .
!ENTRY org.eclipse.osgi 4 0 2017-03-07 14:46:18.041
!MESSAGE Application error
!STACK 1
org.eclipse.core.runtime.CoreException: Plug-in com.android.ide.eclipse.monitor was unable to load class com.android.ide.eclipse.monitor.MonitorApplication.
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:194)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:176)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:191)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
Caused by: org.osgi.framework.BundleException: The activator com.android.ide.eclipse.monitor.MonitorPlugin for bundle com.android.ide.eclipse.monitor is invalid
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:172)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:679)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
... 27 more
Caused by: java.lang.UnsupportedClassVersionError: com/android/prefs/AndroidLocation$AndroidLocationException : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:188)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClassHoldingLock(ClasspathManager.java:632)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:614)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:568)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:492)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:465)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at com.android.ide.eclipse.monitor.MonitorPlugin.<clinit>(MonitorPlugin.java:28)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:357)
at java.lang.Class.newInstance(Class.java:310)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:167)
... 33 more
我遇到了同样的问题。根据日志文件，新版本的 Android Studio 需要 Java 8 "Unsupported major.minor version 52.0": Unsupported major.minor version 52.0
我是 运行 Linux，我目前安装了 java8，所以我只需要使用：
update-alternatives --config java
和
update-alternatives --config javac
然后一切正常。
您似乎在使用 Mac，因此在安装 Java 8 后您可能需要也可能不需要执行以下操作：Installed Java 7 on Mac OS X but Terminal is still using version 6
信息来自 Unsupported major.minor version 52.0 来源：维基百科
- J2SE 8 = 52
- J2SE 7 = 51
- J2SE 6.0 = 50
- J2SE 5.0 = 49
- JDK1.4=48
- JDK1.3=47
- JDK1.2=46
- JDK1.1=45
以上答案对我不起作用。我正在使用 JAVA8，Android JAVA_HOME 和 /usr/bin/java。对我来说更奇怪的是我的 tools/ 目录也缺少 uiautomationviewer 工具。所以这让我想知道是不是在安装过程中出了什么问题。
我最后做的是下载旧版本的 SDK 工具 （我按照说明 here），并替换了整个 sdk/tools 文件夹。它奏效了......
令人困惑的是，我没有在共享位置安装 Java 8（只有 Android Studio 中的捆绑版本）。通过自制软件安装它解决了我的问题。
brew cask install java
$ java -version
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)
Android Studio 自带 Java 1.8，因此在开发 android 应用程序时这不是问题。但是，当您启动 Android 设备监视器时，它会使用 OS 上 运行 的外部 java 编译器。如果你之前已经预装了Java，那就没问题了。否则，你将面临同样的问题。
我试图将 JAVA_HOME 路径设置为 Android Studio 中打包的 java。它不起作用，可能是因为它是 openjdk 版本。
我的解决方案是从 Oracle 下载 Java JDK 1.8 并安装在我的电脑上。
如果您打开特定的错误消息，您将看到错误消息的前几行，如下所示。
!SESSION 2017-12-20 08:17:02.597 -----------------------------------------------
eclipse.buildId=unknown
java.version=9.0.1
java.vendor=Oracle Corporation
这就是我得到的。我在 mac 中安装了 java 8 和 9，并将 java 8 作为默认值。根据错误消息 java 虚拟设备使用了 java 9 但它需要 8。这就是问题所在 happened.So 我从我的 machine 中卸载了 java 9然后它开始正常工作。
同样的问题出现在： macOS 塞拉利昂 10.12.6 Android Studio 3.0.1
解决方法： 正在卸载 Java SE 开发套件 8u152 并且 正在安装 Java SE 开发套件 8u151 来自：http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
尝试右键单击 sdk/tools/monitor.bat 并单击 "run as administrator"
我遇到了同样的问题。 Win10 + JDK 12 + Android SDK。当我运行"monitor.bat"时，也是同样的问题。我猜监控应用程序无法重新定义最新的 java 版本命名约定。 我安装了JRE 8(如下)，问题没有了
c:\>java -version
java version "1.8.0_221"
Java(TM) SE Runtime Environment (build 1.8.0_221-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)