java.lang.NullPointerException at org.netbeans.modules.editor.hints.HintsUI.showPopup(HintsUI.java:310) at org.netbeans.modules.editor.hints.HintsUI.invokeDefaultAction(HintsUI.java:497) at org.netbeans.modules.editor.hints.FixAction.actionPerformed(FixAction.java:64) at org.netbeans.modules.java.editor.overridden.IsOverriddenAnnotationAction.actionPerformed(IsOverriddenAnnotationAction.java:91) at org.netbeans.editor.GlyphGutter$GutterMouseListener.mouseClicked(GlyphGutter.java:755) at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:252) at java.awt.Component.processMouseEvent(Component.java:6219) at javax.swing.JComponent.processMouseEvent(JComponent.java:3265) at java.awt.Component.processEvent(Component.java:5981) at java.awt.Container.processEvent(Container.java:2041) at java.awt.Component.dispatchEventImpl(Component.java:4583) at java.awt.Container.dispatchEventImpl(Container.java:2099) at java.awt.Component.dispatchEvent(Component.java:4413) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4556) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4229) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4150) at java.awt.Container.dispatchEventImpl(Container.java:2085) at java.awt.Window.dispatchEventImpl(Window.java:2475) at java.awt.Component.dispatchEvent(Component.java:4413) at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)