!STACK 0
java.lang.NullPointerException
at org.eclipse.core.internal.runtime.InternalPlatform.getLog(InternalPlatform.java:354)
at org.eclipse.core.runtime.Plugin.getLog(Plugin.java:291)
at org.eclipse.ui.internal.WorkbenchPlugin.log(WorkbenchPlugin.java:809)
at org.eclipse.ui.internal.EarlyStartupRunnable.handleException(EarlyStartupRunnable.java:81)
at org.eclipse.core.runtime.SafeRunner.handleException(SafeRunner.java:75)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:44)
at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)

!ENTRY org.eclipse.core.jobs 2 2 2015-10-14 10:45:32.847
!MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.core.internal.refresh.RefreshJob

!ENTRY org.eclipse.core.jobs 2 2 2015-10-14 10:45:32.848
!MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.core.internal.refresh.RefreshJob

!ENTRY org.eclipse.core.jobs 2 2 2015-10-14 10:45:32.849
!MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.core.internal.events.NotificationManager$NotifyJob

解决方法：删除文件 workspace/.metadata/.plugins/org.eclipse.e4.workbench/workbench.xmi 即可