我正在尝试将jar库工具包附加到我的一个netbeans项目中。但是，当我去File＆gt;项目属性＆gt;图书馆＆gt;添加Wrapped Jar导入成功但运行插件会导致NullPointerException。我怀疑这与路径有关但我不了解如何操纵路径或为什么甚至有空指针。
java.lang.NullPointerException
at org.gephi.desktop.recentfiles.RecentFiles.getMenuPresenter(RecentFiles.java:88)
at org.openide.awt.DynaMenuModel.loadSubmenu(DynaMenuModel.java:100)
at org.openide.awt.MenuBar$LazyMenu$MenuFolder.createInstance(MenuBar.java:831)
at org.openide.loaders.FolderInstance.defaultProcessObjectsFinal(FolderInstance.java:885)
at org.openide.loaders.FolderInstance$1R.run(FolderInstance.java:730)
at org.openide.util.Task.run(Task.java:253)
[catch] at org.netbeans.modules.openide.loaders.AWTTask.run(AWTTask.java:79)
at org.netbeans.modules.openide.loaders.AWTTask$Processor.run(AWTTask.java:171)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)