org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An e

    在外掛程式的開發中，正常的加入extentions ：org.eclipse.ui.views，同時增加了幾個view，然後選中工程右鍵run——》java application，結果在運行出來的工程中開啟添加的View出現如下錯誤報表：

org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle com.ibm.threadanalysis.uiplugin (3).
    at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:125)
    at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:449)
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:211)
    at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:381)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:457)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:398)
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:105)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:326)
    at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:231)
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1193)
    at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:160)
    at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:874)
    at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
    at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51)
    at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:267)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:263)
    at org.eclipse.ui.internal.registry.ViewDescriptor.createView(ViewDescriptor.java:63)
    at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:324)
    at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:226)
    at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
    at org.eclipse.ui.internal.WorkbenchPage$ActivationList.setActive(WorkbenchPage.java:4212)
    at org.eclipse.ui.internal.WorkbenchPage$18.runWithException(WorkbenchPage.java:3271)
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3855)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3476)
    at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
    at org.eclipse.ui.internal.Workbench$28.runWithException(Workbench.java:1384)
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3855)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3476)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2316)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
    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:368)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    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:559)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1287)
Caused by: org.osgi.framework.BundleException: The activator com.ibm.msdk.ui.ThreadAnalysisPlugin for bundle com.ibm.threadanalysis.uiplugin is invalid
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:157)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:751)
    at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:352)
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:280)
    at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:408)
    at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:111)
    ... 56 more
Caused by: java.lang.IllegalAccessException: Class org.eclipse.osgi.framework.internal.core.AbstractBundle can not access a member of class com.ibm.msdk.ui.ThreadAnalysisPlugin with modifiers "private"
    at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:65)
    at java.lang.Class.newInstance0(Class.java:349)
    at java.lang.Class.newInstance(Class.java:308)
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:152)
    ... 61 more

如
所示

解決此問題：

    在我的工程中出現此問題的原因正是因為Activator類的構造方法我改成私人private，從而取代用

getInstance的方法擷取單例，因為Eclipse的外掛程式載入機制，在osgi frameword在載入所有外掛程式的同時即bundle了所有外掛程式的instance，所以基於內部機制調用的是無參數構造方法的instance，所以Activator不能像其他的類那樣使用單例模式，因為Activator已經是一個全域的單例，在整個life cycle中始終存在Activator的instance，所以這樣的問題可能是由於擅自修改了原構造方法導致的。