我有一个沉重的GUI应用程序。每次我启动它,我从EventDispatchThread得到下面的堆栈跟踪:调用Window.setVisible()时出现NullPointerException异常
14:30:04:115 >> java.lang.NullPointerException
at com.mercury.ftjadin.support.jfc11.cs.JTableCS$CellEditorListenerRegistrar.addListener(JTableCS.java:151)
at com.mercury.ftjadin.infra.abstr.ObjectCS.registerListeners(ObjectCS.java:2736)
at com.mercury.ftjadin.infra.DefaultCustomClassManager.onCreate(DefaultCustomClassManager.java:575)
at com.mercury.ftjadin.hooks.WToolkitHook.onCreate(WToolkitHook.java:23)
at java.awt.Toolkit.createComponent(Toolkit.java)
at java.awt.Component.addNotify(Component.java:6650)
at java.awt.Container.addNotify(Container.java:2565)
at javax.swing.JComponent.addNotify(JComponent.java:4693)
at javax.swing.JTable.addNotify(JTable.java:683)
at java.awt.Container.addNotify(Container.java:2576)
at javax.swing.JComponent.addNotify(JComponent.java:4693)
at java.awt.Container.addNotify(Container.java:2576)
at javax.swing.JComponent.addNotify(JComponent.java:4693)
at java.awt.Container.addNotify(Container.java:2576)
at javax.swing.JComponent.addNotify(JComponent.java:4693)
at java.awt.Container.addNotify(Container.java:2576)
at javax.swing.JComponent.addNotify(JComponent.java:4693)
at java.awt.Container.addNotify(Container.java:2576)
at javax.swing.JComponent.addNotify(JComponent.java:4693)
at java.awt.Container.addNotify(Container.java:2576)
at javax.swing.JComponent.addNotify(JComponent.java:4693)
at java.awt.Container.addNotify(Container.java:2576)
at javax.swing.JComponent.addNotify(JComponent.java:4693)
at java.awt.Container.addNotify(Container.java:2576)
at javax.swing.JComponent.addNotify(JComponent.java:4693)
at java.awt.Container.addNotify(Container.java:2576)
at javax.swing.JComponent.addNotify(JComponent.java:4693)
at javax.swing.JRootPane.addNotify(JRootPane.java:738)
at java.awt.Container.addNotify(Container.java:2576)
at java.awt.Window.addNotify(Window.java:664)
at java.awt.Frame.addNotify(Frame.java:470)
at java.awt.Window.show(Window.java:860)
at java.awt.Component.show(Component.java:1591)
at java.awt.Component.setVisible(Component.java:1543)
at java.awt.Window.setVisible(Window.java:843)
at ... my_classes_stack_trace
我试图调试它在Java的源找到我做错了什么,什么所需的对象是null
,但因为我我被困没有源com.mercury.ftjadin
包...
BTW,应用程序运行正常,无论这种例外,但我想无论如何要解决这个..
是任何人都熟悉这个问题?
你可以发布代码吗?也许你有一个循环(在java.awt.Container.addNotify(Container.java:2576) 在javax.swing.JComponent.addNotify(JComponent.java:4693)) – alepuzio
正如我所说,这是一个沉重的GUI应用程序,包含(只有GUI部分)数十个类。问题是编写第一个类时,我是一个总的java初学者,我可能会做一些糟糕的编程,现在我试图追溯到。所以不行。我想发布整个代码是不可能的... – Elist
我会检查您在GUI中使用的JTableCS,并检查添加侦听器是否有任何问题(如果您有权访问它)。 – dARKpRINCE