Java Build Path包含无效值

Question

单击Java Build路径会出现以下错误：

The currently displayed page contains invalid values

我在Windows 7上安装了Eclipse Luna.JDK 7安装在C:\Program Files\Java\jdk1.7.0_67

中

窗口＆gt;偏好＆gt; Java＆gt;安装的JRE会出现以下错误 -

这与此问题有关 - No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?

这是workspace.metadata.log

的摘录

!ENTRY org.eclipse.jface 4 2 2015-05-03 22:56:07.221
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface".
!STACK 0
java.lang.NullPointerException
    at org.eclipse.jdt.internal.debug.ui.jres.JREsPreferencePage.dispose(JREsPreferencePage.java:316)
    at org.eclipse.jface.preference.PreferenceNode.disposeResources(PreferenceNode.java:170)
    at org.eclipse.ui.internal.preferences.WorkbenchPreferenceExtensionNode.disposeResources(WorkbenchPreferenceExtensionNode.java:139)
    at org.eclipse.jface.preference.PreferenceDialog$2.run(PreferenceDialog.java:291)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.jface.preference.PreferenceDialog.close(PreferenceDialog.java:303)
    at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.close(FilteredPreferenceDialog.java:723)
    at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.close(WorkbenchPreferenceDialog.java:148)
    at org.eclipse.jface.preference.PreferenceDialog.cancelPressed(PreferenceDialog.java:270)
    at org.eclipse.jface.preference.PreferenceDialog.buttonPressed(PreferenceDialog.java:235)
    at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:619)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
    at org.eclipse.jface.window.Window.runEventLoop(Window.java:827)
    at org.eclipse.jface.window.Window.open(Window.java:803)
    at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.open(WorkbenchPreferenceDialog.java:221)
    at org.eclipse.ui.internal.OpenPreferencesAction.run(OpenPreferencesAction.java:66)
    at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
    at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
    at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
    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:382)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:236)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1465)