자바 FX의 ColorPicker NullPointerException이

내가이 끔찍한 NullPointerException이 얻을 사용자 컬러 링크를 클릭하면 :자바 FX의 ColorPicker NullPointerException이

Exception in thread "JavaFX Application Thread" java.lang.NullPointerException 
at javafx.stage.Window$9.invalidated(Window.java:867) 
at javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:109) 
at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:144) 
at javafx.stage.Window.setShowing(Window.java:922) 
at javafx.stage.Window.show(Window.java:937) 
at javafx.stage.Stage.show(Stage.java:259) 
at com.sun.javafx.scene.control.skin.CustomColorDialog.show(CustomColorDialog.java:170) 
at com.sun.javafx.scene.control.skin.ColorPalette$1.handle(ColorPalette.java:127) 
at com.sun.javafx.scene.control.skin.ColorPalette$1.handle(ColorPalette.java:105) 
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191) 
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74) 
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49) 
at javafx.event.Event.fireEvent(Event.java:198) 
at javafx.scene.Node.fireEvent(Node.java:8411) 
at javafx.scene.control.Hyperlink.fire(Hyperlink.java:153) 
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182) 
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96) 
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89) 
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218) 
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191) 
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74) 
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54) 
at javafx.event.Event.fireEvent(Event.java:198) 
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757) 
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485) 
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762) 
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494) 
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380) 
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294) 
at java.security.AccessController.doPrivileged(Native Method) 
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$354(GlassViewEventHandler.java:416) 
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389) 
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415) 
at com.sun.glass.ui.View.handleMouseEvent(View.java:555) 
at com.sun.glass.ui.View.notifyMouse(View.java:937) 
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) 
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191) 
at java.lang.Thread.run(Thread.java:745)

보이는 방법 :

그것을 해결하기 위해 어떤 가능성이 있습니까? 어쩌면 바닥에있는 링크를자를 수있는 방법이 있을까요? 코드 :

colorMenu = new Menu("Color"); 
    ColorPicker colorPicker = new ColorPicker(); 
    colorPicker.setValue(Color.FIREBRICK); 
    m_palette = new MenuItem(null, colorPicker); 
    m_palette.setOnAction(event -> gameScene.setCellColor(colorPicker.getValue()));

어떤 조언을 해주셔서 감사합니다!

출처

2017-03-15 Mateusz Tapa

스택 추적에 클라이언트 코드가 없으므로 "Null 포인터 예외 란"과 중복되지 않습니다. –

어떤 JDK 버전을 사용하고 있습니까? –

비슷한 http://stackoverflow.com/questions/26768955/javafx-colorpicker-wont-bring-up-customcolor-pop-up-dialog-box. 그들은 Java를 업데이트 할 것을 제안합니다. – gvlachakis

MenuItem의 메뉴 개체를 만들어이 문제를 방지했습니다. 이제는 다음과 같습니다. Screenshot

출처

2017-03-15 17:31:00

자바 FX의 ColorPicker NullPointerException이

답변

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