为什么Eclipse Java Editor不起作用？

Question

在我的Eclipse中，所有的java文件都会在package explore中正确显示，但是当我尝试在Java编辑器中打开一个java文件时，我只会看到这个。

我很奇怪，我可以做格式代码或显示大纲。我尝试用文本编辑器打开这个文件，效果很好。 我尝试在eclipse日志文件中找到有用的东西。在eclipse启动后，日志文件不包含任何错误和异常。在我打开两个java文件并单击轮廓后，eclipse将收集异常。日志文件中有两个片段：

!ENTRY org.eclipse.jface 4 2 2016-08-20 19:03:42.792
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface".
!STACK 0
java.lang.ArrayIndexOutOfBoundsException: -1
at org.eclipse.swt.custom.StyledTextRenderer.calculateClientArea(StyledTextRenderer.java:230)
at org.eclipse.swt.custom.StyledText.resetCache(StyledText.java:7955)
at org.eclipse.swt.custom.StyledText.redraw(StyledText.java:7516)
at org.eclipse.jface.text.CursorLinePainter.drawHighlightLine(CursorLinePainter.java:179)
at org.eclipse.jface.text.CursorLinePainter.paint(CursorLinePainter.java:240)
at org.eclipse.jface.text.PaintManager.paint(PaintManager.java:299)
at org.eclipse.jface.text.PaintManager.selectionChanged(PaintManager.java:338)
at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:163)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:160)
at org.eclipse.jface.text.TextViewer.fireSelectionChanged(TextViewer.java:2734)
at org.eclipse.jface.text.TextViewer.selectionChanged(TextViewer.java:2713)
at org.eclipse.jface.text.TextViewer.setSelectedRange(TextViewer.java:2398)
at org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.setSelection(JavaEditor.java:2367)
at org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.doSelectionChanged(JavaEditor.java:2435)
at org.eclipse.jdt.internal.ui.javaeditor.JavaOutlinePage$3.open(JavaOutlinePage.java:1022)
at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48)
at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:854)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:851)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1168)
at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1275)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:278)
at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:272)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:313)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:694)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)

 !ENTRY org.eclipse.ui 4 0 2016-08-20 19:03:43.007
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.IllegalArgumentException: Index out of bounds)
at org.eclipse.swt.SWT.error(SWT.java:4491)
at org.eclipse.swt.SWT.error(SWT.java:4406)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:138)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4155)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3772)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:694)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
Caused by: java.lang.IllegalArgumentException: Index out of bounds
at org.eclipse.swt.SWT.error(SWT.java:4472)
at org.eclipse.swt.SWT.error(SWT.java:4406)
at org.eclipse.swt.SWT.error(SWT.java:4377)
at org.eclipse.swt.custom.StyledText.getOffsetAtLine(StyledText.java:4403)
at org.eclipse.jface.text.JFaceTextUtil.getPartialTopIndex(JFaceTextUtil.java:103)
at org.eclipse.jface.text.JFaceTextUtil.getPartialTopIndex(JFaceTextUtil.java:151)
at org.eclipse.jface.text.source.AnnotationRulerColumn.getInclusiveTopIndexStartOffset(AnnotationRulerColumn.java:556)
at org.eclipse.jface.text.source.AnnotationRulerColumn.doPaint1(AnnotationRulerColumn.java:707)
at org.eclipse.jface.text.source.AnnotationRulerColumn.doubleBufferPaint(AnnotationRulerColumn.java:532)
at org.eclipse.jface.text.source.AnnotationRulerColumn.redraw(AnnotationRulerColumn.java:815)
at org.eclipse.jface.text.source.AnnotationRulerColumn$6.run(AnnotationRulerColumn.java:798)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
... 23 more

我该如何解决这个问题？