一次Eclipse发生内存溢出（ADT环境，多打开几个xml文件内存占用就会飚升），强制结束任务，再次启动Eclipse发现闪退。查看workspace/.metadata/.log文件发现如下错误信息：
!ENTRY org.eclipse.equinox.p2.ui.sdk.scheduler 4 0 2015-04-07 22:29:38.086
!MESSAGE Unable to execute early startup code for an extension
!STACK 1
org.eclipse.core.runtime.CoreException: Plug-in “org.eclipse.equinox.p2.ui.sdk.scheduler” was unable to instantiate class “org.eclipse.equinox.internal.p2.ui.sdk.scheduler.AutomaticUpdateScheduler”.
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:194)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:186)
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.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:273)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:269)
at org.eclipse.ui.internal.EarlyStartupRunnable.getExecutableExtension(EarlyStartupRunnable.java:117)
at org.eclipse.ui.internal.EarlyStartupRunnable.run(EarlyStartupRunnable.java:66)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
Caused by: java.lang.NullPointerException
at org.eclipse.equinox.internal.p2.ui.sdk.scheduler.AutomaticUpdateScheduler.
解决方法是删除workspace/.metadata/.plugins/目录下的org.eclipse.equinox.p2.ui和org.eclipse.e4.workbench这两个文件夹，之后启动Eclipse恢复正常。
Original: https://www.cnblogs.com/bjzhanghao/p/4400934.html
Author: 八进制
Title: Eclipse崩溃后无法启动的问题解决
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