Warum erstellen meine Netbeans kein neues Projekt?

Ich habe gerade NetBeans 8.2 installiert und alles schien gut zu laufen. Ich habe eine fast 100% ige Standardeinstellung verwendet, außer ein oder zwei Module zu entfernen, die ich niemals benötigen würde, und den Standardarbeitsbereich beim ersten Ausführen zu ändern.

Jetzt wird es nichts tun. Wenn ich auf das klicke File->New Project Befehl, passiert überhaupt nichts. Wenn ich auf mehrere andere Befehle klicke, passiert einfach gar nichts.

Das IDE-Protokoll zeigt einen Stack-Trace an, nachdem ich versucht habe, ein Projekt zu erstellen. Dies ist die Spur:

SEVERE [global]
java.lang.ClassNotFoundException: javax.activation.DataContentHandlerFactory
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
    at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:222)
Caused: java.lang.ClassNotFoundException: javax.activation.DataContentHandlerFactory starting from ModuleCL@6c9be2b3[org.openide.awt] with possible defining loaders null and declared parents [org.netbeans.MainImpl$BootClassLoader@7a1ebcd8, ModuleCL@28e83a83[org.netbeans.api.annotations.common]]
    at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
Caused: java.lang.NoClassDefFoundError: javax/activation/DataContentHandlerFactory
    at org.openide.awt.QuickSearch.setUpSearch(QuickSearch.java:369)
    at org.openide.awt.QuickSearch.<init>(QuickSearch.java:107)
    at org.openide.awt.QuickSearch.attach(QuickSearch.java:197)
    at org.openide.awt.QuickSearch.attach(QuickSearch.java:125)
    at org.openide.explorer.view.TreeView$ExplorerTree.setupSearch(TreeView.java:1936)
    at org.openide.explorer.view.TreeView$ExplorerTree.<init>(TreeView.java:1753)
    at org.openide.explorer.view.TreeView.initializeTree(TreeView.java:299)
    at org.openide.explorer.view.TreeView.<init>(TreeView.java:238)
    at org.openide.explorer.view.TreeView.<init>(TreeView.java:228)
    at org.openide.explorer.view.BeanTreeView.<init>(BeanTreeView.java:98)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$CategoriesBeanTreeView.<init>(TemplatesPanelGUI.java:679)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$CategoriesPanel.createComponent(TemplatesPanelGUI.java:729)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$ExplorerProviderPanel.initGUI(TemplatesPanelGUI.java:644)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$ExplorerProviderPanel.<init>(TemplatesPanelGUI.java:535)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$CategoriesPanel.<init>(TemplatesPanelGUI.java:719)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$CategoriesPanel.<init>(TemplatesPanelGUI.java:719)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI.initComponents(TemplatesPanelGUI.java:421)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI.<init>(TemplatesPanelGUI.java:156)
    at org.netbeans.modules.project.ui.ProjectTemplatePanel.getComponent(ProjectTemplatePanel.java:187)
    at org.netbeans.modules.project.ui.NewProjectWizard.createTemplateChooser(NewProjectWizard.java:104)
    at org.openide.loaders.TemplateWizard.templateChooser(TemplateWizard.java:320)
    at org.openide.loaders.TemplateWizardIterImpl.firstPanel(TemplateWizardIterImpl.java:87)
    at org.openide.loaders.TemplateWizardIterImpl.current(TemplateWizardIterImpl.java:144)
    at org.openide.loaders.TemplateWizardIteratorWrapper.current(TemplateWizardIteratorWrapper.java:92)
    at org.openide.WizardDescriptor.updateStateOpen(WizardDescriptor.java:844)
    at org.openide.WizardDescriptor.updateState(WizardDescriptor.java:822)
    at org.openide.loaders.TemplateWizard.updateState(TemplateWizard.java:761)
    at org.netbeans.modules.project.ui.NewProjectWizard.updateState(NewProjectWizard.java:84)
    at org.openide.WizardDescriptor._updateState(WizardDescriptor.java:800)
    at org.openide.WizardDescriptor.access$200(WizardDescriptor.java:92)
    at org.openide.WizardDescriptor$Listener.stateChanged(WizardDescriptor.java:2180)
    at org.openide.util.WeakListenerImpl$Change.stateChanged(WeakListenerImpl.java:356)
    at org.openide.loaders.TemplateWizardIterImpl.run(TemplateWizardIterImpl.java:275)
    at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
    at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:764)
    at java.desktop/java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:717)
    at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:711)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:89)
    at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:734)
    at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
[catch] at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:199)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor org.netbeans.modules.project.ui.actions.NewProject$1
java.lang.ClassNotFoundException: javax.activation.DataContentHandlerFactory
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
    at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:222)
Caused: java.lang.ClassNotFoundException: javax.activation.DataContentHandlerFactory starting from ModuleCL@6c9be2b3[org.openide.awt] with possible defining loaders null and declared parents [org.netbeans.MainImpl$BootClassLoader@7a1ebcd8, ModuleCL@28e83a83[org.netbeans.api.annotations.common]]
    at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
Caused: java.lang.NoClassDefFoundError: javax/activation/DataContentHandlerFactory
    at org.openide.awt.QuickSearch.setUpSearch(QuickSearch.java:369)
    at org.openide.awt.QuickSearch.<init>(QuickSearch.java:107)
    at org.openide.awt.QuickSearch.attach(QuickSearch.java:197)
    at org.openide.awt.QuickSearch.attach(QuickSearch.java:125)
    at org.openide.explorer.view.TreeView$ExplorerTree.setupSearch(TreeView.java:1936)
    at org.openide.explorer.view.TreeView$ExplorerTree.<init>(TreeView.java:1753)
    at org.openide.explorer.view.TreeView.initializeTree(TreeView.java:299)
    at org.openide.explorer.view.TreeView.<init>(TreeView.java:238)
    at org.openide.explorer.view.TreeView.<init>(TreeView.java:228)
    at org.openide.explorer.view.BeanTreeView.<init>(BeanTreeView.java:98)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$CategoriesBeanTreeView.<init>(TemplatesPanelGUI.java:679)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$CategoriesPanel.createComponent(TemplatesPanelGUI.java:729)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$ExplorerProviderPanel.initGUI(TemplatesPanelGUI.java:644)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$ExplorerProviderPanel.<init>(TemplatesPanelGUI.java:535)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$CategoriesPanel.<init>(TemplatesPanelGUI.java:719)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI$CategoriesPanel.<init>(TemplatesPanelGUI.java:719)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI.initComponents(TemplatesPanelGUI.java:421)
    at org.netbeans.modules.project.ui.TemplatesPanelGUI.<init>(TemplatesPanelGUI.java:156)
    at org.netbeans.modules.project.ui.ProjectTemplatePanel.getComponent(ProjectTemplatePanel.java:187)
    at org.netbeans.modules.project.ui.NewProjectWizard.createTemplateChooser(NewProjectWizard.java:104)
    at org.openide.loaders.TemplateWizard.templateChooser(TemplateWizard.java:320)
    at org.openide.loaders.TemplateWizardIterImpl.firstPanel(TemplateWizardIterImpl.java:87)
    at org.openide.loaders.TemplateWizardIterImpl.current(TemplateWizardIterImpl.java:144)
    at org.openide.loaders.TemplateWizardIteratorWrapper.current(TemplateWizardIteratorWrapper.java:92)
    at org.openide.WizardDescriptor.updateStateOpen(WizardDescriptor.java:844)
    at org.openide.WizardDescriptor.updateState(WizardDescriptor.java:822)
    at org.openide.loaders.TemplateWizard.updateState(TemplateWizard.java:761)
    at org.netbeans.modules.project.ui.NewProjectWizard.updateState(NewProjectWizard.java:84)
    at org.openide.loaders.TemplateWizard$2.run(TemplateWizard.java:497)
    at org.openide.loaders.TemplateWizard$2.run(TemplateWizard.java:494)
    at org.netbeans.modules.openide.util.NbMutexEventProvider$Event$1AWTWorker.run(NbMutexEventProvider.java:156)
    at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:303)
    at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:764)
    at java.desktop/java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:717)
    at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:711)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:89)
    at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:734)
    at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
    at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:199)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
[catch] at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
INFO [org.netbeans.modules.autoupdate.updateprovider.AutoupdateCatalogParser]: Unpaired license 00000008 without any module.
INFO [null]: Last record repeated again.

Bitte klären Sie die jdk-Version. In meinem Fall verwende ich folgende Lösung: NetBeans 8.2 ist nicht mit jdk 9 kompatibel. Ich benenne das Verzeichnis jdk-9 vorübergehend um und ändere das Standard-jdkhome beim Neustart. Oder ändern Sie netbeans_jdkhome in etc \ netbeans.conf.

Vielleicht hilft das auch.

JDK 9 funktioniert noch nicht mit Netbeans 8.2. Du brauchst wenigstens JDK 8 , JRE 8 .

Öffnen Sie eine Befehlszeile und geben Sie "javac -version" ein, um die JDK-Version anzuzeigen.

Wählen Sie in Netbeans unter der Registerkarte "Tools" die Option "java-platform" aus und fügen Sie das JDK 8 standardmäßig über "add Platform" (Ordner "jdk") hinzu. Oder versuchen Sie, Netbeans erneut zu installieren, und wählen Sie bei der Installation JDK 8 aus.

Einige Antworten Hier und Hier .