java - 调用 Window.setVisible() 时出现 NullPointerException

Question

我有一个繁重的 GUI 应用程序。每次启动它时，我都会从 EventDispatchThread 获得以下堆栈跟踪:

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

我试图在 java 的源代码中调试它以找出我做错了什么以及所需的对象是 null，但是我被卡住了，因为我没有 com.mercury 的源代码.ftjadin 包...

顺便说一句，不管这个异常，应用程序运行正常，但我还是想解决这个问题..

有人熟悉这个问题吗？

Answer 1

尝试

  new window.setVisible(true);