我正在创建一个Java swing应用程序。我复制了代码的精简版。我有一个要填充一些数据的JTable。当用户按下GO时，它将打开一个新窗口，并填充JTable中的数据。我希望将数据填充到JTable中与GO按钮相同的窗口中。有什么想法为什么每次我按下按钮都会打开一个相同的新窗口？
public class test extends JFrame {
protected JPanel mainPane;
protected JTable displayTable;
protected JPanel tabbedPanel;
protected JTabbedPane tabbedPane;
protected DefaultTableModel displayModel;
protected JButton displayButton;
protected JComboBox<String> comboBox;
public test() {
setVisible(true);
setBounds(100, 100, 1000, 600);
setResizable(false);
mainPane = new JPanel();
mainPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(mainPane);
GridBagLayout gbl_mainPane = new GridBagLayout();
gbl_mainPane.columnWidths = new int[] { 0, 93, 42, 189, 165, 0, 184, 0 };
gbl_mainPane.rowHeights = new int[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
gbl_mainPane.columnWeights = new double[] { 1.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0, Double.MIN_VALUE };
gbl_mainPane.rowWeights = new double[] { 1.0, 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE };
mainPane.setLayout(gbl_mainPane);
tabbedPane = new JTabbedPane(JTabbedPane.TOP);
GridBagConstraints gbc_tabbedPane = new GridBagConstraints();
gbc_tabbedPane.gridwidth = 7;
gbc_tabbedPane.gridheight = 9;
gbc_tabbedPane.fill = GridBagConstraints.BOTH;
gbc_tabbedPane.gridx = 0;
gbc_tabbedPane.gridy = 0;
mainPane.add(tabbedPane, gbc_tabbedPane);
tabbedPanel = new JPanel();
tabbedPane.addTab("Volume", null, tabbedPanel, null);
GridBagLayout gbl_tabbedPanel = new GridBagLayout();
gbl_tabbedPanel.columnWidths = new int[] { 86, 86, 86, 73, 73, -30, 140, 120, 0 };
gbl_tabbedPanel.rowHeights = new int[] { 249, 28, 35, 10, 3, 3, 23, 0, 0 };
gbl_tabbedPanel.columnWeights = new double[] { 1.0, 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE };
gbl_tabbedPanel.rowWeights = new double[] { 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE };
tabbedPanel.setLayout(gbl_tabbedPanel);
JScrollPane scrollPane = new JScrollPane();
GridBagConstraints gbc_scrollPane = new GridBagConstraints();
gbc_scrollPane.fill = GridBagConstraints.BOTH;
gbc_scrollPane.insets = new Insets(0, 0, 5, 0);
gbc_scrollPane.gridwidth = 8;
gbc_scrollPane.gridx = 0;
gbc_scrollPane.gridy = 0;
tabbedPanel.add(scrollPane, gbc_scrollPane);
displayTable = new JTable();
displayTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
displayTable.setShowVerticalLines(false);
displayTable.setShowHorizontalLines(false);
displayTable.getTableHeader().setReorderingAllowed(false);
displayTable.setModel(
new DefaultTableModel(new Object[][] {}, new String[] { "1", "2", "3", "4", "5", "6", }) {
Class[] columnTypes = new Class[] { Object.class, String.class, Integer.class, Integer.class,
String.class, String.class, String.class, Integer.class };
});
displayTable.getColumnModel().getColumn(0).setMinWidth(100);
displayTable.getColumnModel().getColumn(1).setMinWidth(20);
scrollPane.setViewportView(displayTable);
displayModel = (DefaultTableModel) displayTable.getModel();
scrollPane.setViewportView(displayTable);
displayModel = (DefaultTableModel) displayTable.getModel();
displayButton = new JButton("GO");
GridBagConstraints gbc_displayButton = new GridBagConstraints();
gbc_displayButton.gridwidth = 2;
gbc_displayButton.anchor = GridBagConstraints.NORTH;
gbc_displayButton.fill = GridBagConstraints.HORIZONTAL;
gbc_displayButton.insets = new Insets(0, 0, 5, 0);
gbc_displayButton.gridx = 6;
gbc_displayButton.gridy = 2;
tabbedPanel.add(displayButton, gbc_displayButton);
displayButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
Thread populate = new Thread(new PopulateDisplay());
populate.start();
displayButton.setEnabled(false);
}
});
comboBox = new JComboBox<String>();
GridBagConstraints gbc_comboBox = new GridBagConstraints();
gbc_comboBox.insets = new Insets(0, 0, 5, 5);
gbc_comboBox.fill = GridBagConstraints.HORIZONTAL;
gbc_comboBox.gridx = 1;
gbc_comboBox.gridy = 4;
tabbedPanel.add(comboBox, gbc_comboBox);
comboBox.addItem("Test 1");
comboBox.addItem("Test 2");
comboBox.addItem("Test3");
}
}
class PopulateDisplay extends test implements Runnable {
public void run() {
try {
getData(comboBox.getSelectedItem().toString());
lookup();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private void getData(String sector) throws UnsupportedEncodingException, IOException {
//DOES SOMETHING
}
private void lookup() throws IOException {
//added here
displayModel.addRow(new Object[] { "", "" , ""});
}
}
最佳答案
您的PopulateDisplay类扩展了test。因此，PopulateDisplay实例是一个test，当您创建一个PopulateDisplay时，您正在创建一个新的test，因此您将创建一个全新的JFrame并显示它。
PopulateDisplay不应扩展test。
您还应该遵守Java命名约定：类以大写字母开头。