java.lang.ClassNotFoundException: javax.activation.DataContentHandlerFactory at jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:366) at jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185) at java.lang.ClassLoader.loadClass(ClassLoader.java:419) Caused: java.lang.ClassNotFoundException: javax.activation.DataContentHandlerFactory starting from ModuleCL@75f3e35c[org.openide.awt] with possible defining loaders [ModuleCL@66482f3e[org.netbeans.modules.xml.jaxb.api]] and declared parents [org.netbeans.MainImpl$BootClassLoader@7ce6a65d, ModuleCL@5999f8c7[org.netbeans.api.annotations.common]] at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224) at java.lang.ClassLoader.loadClass(ClassLoader.java:419) Caused: java.lang.NoClassDefFoundError: javax/activation/DataContentHandlerFactory at org.openide.awt.QuickSearch.setUpSearch(QuickSearch.java:369) at org.openide.awt.QuickSearch.(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.(TreeView.java:1753) at org.openide.explorer.view.TreeView.initializeTree(TreeView.java:299) at org.openide.explorer.view.TreeView.(TreeView.java:238) at org.openide.explorer.view.TreeView.(TreeView.java:228) at org.openide.explorer.view.BeanTreeView.(BeanTreeView.java:98) at org.netbeans.modules.project.ui.ProjectTab$ProjectTreeView.(ProjectTab.java:729) at org.netbeans.modules.project.ui.ProjectTab$ProjectTreeView.(ProjectTab.java:729) at org.netbeans.modules.project.ui.ProjectTab.(ProjectTab.java:200) at org.netbeans.modules.project.ui.ProjectTab.(ProjectTab.java:182) at org.netbeans.modules.project.ui.ProjectTab.getDefault(ProjectTab.java:332) at org.netbeans.modules.project.ui.ProjectTab.findDefault(ProjectTab.java:318) at org.netbeans.modules.project.ui.ProjectUtilities$2.run(ProjectUtilities.java:267) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:759) at java.awt.EventQueue.access$500(EventQueue.java:97) at java.awt.EventQueue$3.run(EventQueue.java:712) at java.awt.EventQueue$3.run(EventQueue.java:706) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77) at java.awt.EventQueue.dispatchEvent(EventQueue.java:729) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:199) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)