Swing 在对话框中将JTable添加到我的窗格时，在打包时会抛出NPE
我已经创建了一个Swing 在对话框中将JTable添加到我的窗格时，在打包时会抛出NPE,swing,jtable,jdialog,jtabbedpane,formpanel,Swing,Jtable,Jdialog,Jtabbedpane,Formpanel,我已经创建了一个JDialog。当它出现时，我有一个JTabbedPane，上面有几个FormPanels。表单面板作为表单文件加载（我用来创建表单）。在我尝试向其中一个表单添加JTable之前，我没有遇到任何问题（同样，通过Abeille）。我添加表单就像添加其他选项卡一样，但当我运行dialog.pack时，它会抛出NullPointerException。该表单中的表似乎不是null，因为我可以从中获取值。我看不出是什么导致null private JDialog m_dialog; pr
JDialogJTabbedPaneFormPanelJTabledialog.packNullPointerExceptionnullnullprivate JDialog m_dialog;
private FormPanel m_panelForm;
private FormPanel m_tableEditorForm;
private FormPanel m_fieldEditorForm;
private FormPanel m_seedDataEditorForm;
JFrame appFrame = App.getInstance().getFrame();
m_dialog = new JDialog(appFrame, "Dialog Title"), true);
m_dialog.setName("Dialog"));
m_dialog.setLocationRelativeTo(appFrame);
// Load dialog layout
m_panelForm = getFormPanel("DLG_EDIT_PANEL");
m_tableEditorForm = getFormPanel("DLG_TABLE_EDITOR");
m_fieldEditorForm = getFormPanel("DLG_FIELD_EDITOR");
m_seedDataEditorForm = getFormPanel("DLG_SEED_DATA_EDITOR");
JTabbedPane pane = m_panelForm.getTabbedPane("editPane");
//Set up the tabs
pane.insertTab("Table", null, m_tableEditorForm, null, 0);
pane.insertTab("Field", null, m_fieldEditorForm, null, 1);
pane.insertTab("Seed", null, m_seedDataEditorForm, null, 2);
m_panelForm.reset();
m_dialog.setContentPane(m_panelForm);
m_dialog.pack();
JTablecolumnCountrowCountJDialogsetVisible