Java AbstractTableModel：getValueAt 不使用更新的数据

Question

我有一个带有四个卡片面板的 Java 应用程序。在第一个面板中，我接收到第一个地理点的数据，在第二个和第三个中接收其他两个点的数据，在第四个面板中，我有一个 JTable 显示关于这三个点的提取信息。

以下代码可用于编译应用程序。在每个 Card 面板上，尝试单击 JTextfield 旁边的按钮以添加数据。

包款

Class AppSingleton

public class AppSingleton 
{
  private static AppSingleton instance = null;  

  public List<List<String>> flightPlanShared = new ArrayList<List<String>>(){{
    add(Arrays.asList(""));
    add(Arrays.asList(""));
    add(Arrays.asList(""));
  }};

  private AppSingleton() 
  {

  }

  public static AppSingleton getInstance() 
  {
    if(instance == null) 
    {
        instance = new AppSingleton();
    }
    return instance;
  }
}

Class Model_Flightplan

import java.util.ArrayList;
import java.util.List;
import presenters.Presenter;
import views.View_MainFrame;

public class Model_Flightplan 
{
    AppSingleton appSingleton = AppSingleton.getInstance( );
    private Presenter presenter;
    private View_MainFrame viewMainFrame; 

    public Model_Flightplan(View_MainFrame viewMainFrame) 
    {
       this.viewMainFrame = viewMainFrame;
    }

    public Presenter getPresenter() {
        return presenter;
    }

    public void setPresenter(Presenter presenter) {
       this.presenter = presenter;
    }

    public void addDepartureAirport() 
    {          
      List<String> component = new ArrayList<>();
      component.add("KLAS");
      component.add("KLAS");
      component.add("KLAS");

      appSingleton.flightPlanShared.set(0, component);
    }                                         

    public void addDestinationAirport()
    {
      List<String> component = new ArrayList<>();
      component.add("KLAX");
      component.add("KLAX");
      component.add("KLAX");

      appSingleton.flightPlanShared.set( (appSingleton.flightPlanShared.size() - 2), component);
    }

    public void addAlternateAirport()
    {
      List<String> component = new ArrayList<>();
      component.add("KSEA");
      component.add("KSEA");
      component.add("KSEA");

      appSingleton.flightPlanShared.set( (appSingleton.flightPlanShared.size() - 1), component);
     }  
 }

Class Model_TableWindsAloft

package models;

import java.util.ArrayList;
import java.util.List;
import javax.swing.table.AbstractTableModel;

public class Model_TableWindsAloft extends AbstractTableModel
{

    String[] columnNames = {"ICAO","Name","Type"};

    private List<List<String>> tableData = new ArrayList<>();

    public Model_TableWindsAloft(List<List<String>> tableData)
    {
       this.tableData = tableData;
       System.out.println("CONSTRUCTOR? "+tableData);
    }


    @Override
    public int getRowCount() 
    {
        System.out.println("DATA COUNT? "+tableData.size());
       return(tableData.size());
    }

    @Override
    public int getColumnCount() {
       return(columnNames.length);
    }

    @Override
    public String getColumnName(int column) 
    {
       return columnNames[column] ;
    }

    @Override
    public Object getValueAt(int rowIndex, int columnIndex) 
    {
      System.out.println("WHAT IS DATA 1? "+tableData);

      List<String> data = tableData.get(rowIndex);

      System.out.println("WHAT IS DATA 2? "+data);

      if(data.size()>=3)
      {
        switch(columnIndex) 
        {
            case 0: 
                return data.get(0);
            case 1:
                return data.get(1);
            case 2:
                return data.get(2);
            default: 
                return null;
         }
       }
       else
       {
          return null;
       }
    }
 }

套餐主持人

Class 主持人

package presenters;

import java.awt.CardLayout;
import models.Model_Flightplan;
import views.View_MainFrame;

public class Presenter 
{
  private final View_MainFrame viewMainFrame;
  private final Model_Flightplan model;

  public Presenter(View_MainFrame viewMainFrame, Model_Flightplan model) 
  {
    this.viewMainFrame = viewMainFrame;
    this.model = model;
  }

  public void displayTabDep() 
  {            
    CardLayout card = (CardLayout)viewMainFrame.getPanelContext().getLayout();
    card.show(viewMainFrame.getPanelContext(), "cardDep");
    viewMainFrame.addButtonsFlightplan();
    viewMainFrame.btnPnlDeparture.setEnabled(false);
  }

  public void displayTabDest() 
  {
    CardLayout card = (CardLayout)viewMainFrame.getPanelContext().getLayout();
    card.show(viewMainFrame.getPanelContext(), "cardDest");
    viewMainFrame.addButtonsFlightplan();
    viewMainFrame.btnPnlDestination.setEnabled(false);
  }

  public void displayTabAlt() 
  {
    CardLayout card = (CardLayout)viewMainFrame.getPanelContext().getLayout();
    card.show(viewMainFrame.getPanelContext(), "cardAlt");
    viewMainFrame.addButtonsFlightplan();
    viewMainFrame.btnPnlAlternate.setEnabled(false);
  }

  public void displayTabWindsAloft() 
  {
    CardLayout card = (CardLayout)viewMainFrame.getPanelContext().getLayout();
    card.show(viewMainFrame.getPanelContext(), "cardWindsAloft");

    viewMainFrame.addButtonsFlightplan();
    viewMainFrame.btnPnlWindsAloft.setEnabled(false);

    viewMainFrame.createPanelWindsAloft();
  }

  public void addDeparture()
  {
    model.addDepartureAirport();
  }

  public void addDestination()
  {
    model.addDestinationAirport();
  }

  public void addAlternate()
  {
    model.addAlternateAirport();
  }
}

打包浏览量

Class View_MainFrame

package views;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.List;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRootPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import models.AppSingleton;
import presenters.Presenter;

public class View_MainFrame 
{
  AppSingleton appSingleton = AppSingleton.getInstance( );
  private Presenter presenter;
  private JPanel panelContext;

  private JFrame frame;

  public JPanel pnlDep;
  public JPanel pnlDest;
  public JPanel pnlAlt;
  public JPanel pnlWindsAloft;
  public JPanel panelButtons;
  public JButton btnFlightplan;
  public JPanel panelButtonsAdd;
  public JButton btnFlightplanDummy;
  public JPanel pnlDepAirport;
  private JButton btnAddDep;

  private javax.swing.JPanel pnlDestAirport;
  public JButton btnAddDest;

  private javax.swing.JPanel pnlAltAirport;
  public JButton btnAddAlt;

  private javax.swing.JPanel pnlWindsAloftInfo;
  private javax.swing.JPanel pnlWindsAloftTable;
  public JButton btnPnlDeparture;
  public JButton btnPnlDestination;
  public JButton btnPnlAlternate;
  public JButton btnPnlWindsAloft;

  public View_MainFrame()
  {
    createUI();
  }

  private void createUI() 
  {
    JFrame.setDefaultLookAndFeelDecorated(true);
    frame = new JFrame("iGoDispatch IXEG Boeing-733");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().setLayout(new javax.swing.BoxLayout(frame.getContentPane(), javax.swing.BoxLayout.Y_AXIS));

    Dimension frameSize = new Dimension(1050,700);
    Dimension frameSizeMin = new Dimension(500,200);
    frame.setPreferredSize(frameSize);
    frame.setMinimumSize(frameSizeMin);

    createPanelButtons();
    createPanelButtonsAdd();
    createPanelDeparture();
    createPanelDestination();
    createPanelAlternate();
    pnlWindsAloft = new JPanel();
    pnlWindsAloft.setLayout(new java.awt.BorderLayout());
    createPanelWindsAloft();

    setPanelContext(new JPanel());
    getPanelContext().setLayout(new java.awt.CardLayout());
    frame.getContentPane().add(getPanelContext(), java.awt.BorderLayout.SOUTH);

    getPanelContext().add(pnlDep, "cardDep");
    getPanelContext().add(pnlDest, "cardDest");
    getPanelContext().add(pnlAlt, "cardAlt");
    getPanelContext().add(pnlWindsAloft, "cardWindsAloft");

    frame.pack();
    frame.setVisible(true);
    frame.setLocationRelativeTo(null);
  }

  public JPanel getPanelContext() {
    return panelContext;
  }

  public void setPanelContext(JPanel panelContext) {
    this.panelContext = panelContext;
  }

  private void createPanelButtons()
  {
    panelButtons = new JPanel();
    panelButtons.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
    panelButtons.setLayout(new java.awt.GridLayout(1, 0));
    Dimension panelButtonsMinSize = new Dimension(1050,60);
    panelButtons.setMinimumSize(panelButtonsMinSize);

    btnFlightplan = new JButton();
    btnFlightplan.setFont(new java.awt.Font("Lucida Grande", 1, 13)); // NOI18N
    btnFlightplan.setText("Flightplan");
    btnFlightplan.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
    btnFlightplan.setIconTextGap(5);
    btnFlightplan.setMaximumSize(new java.awt.Dimension(70, 70));
    btnFlightplan.setMinimumSize(new java.awt.Dimension(70, 70));
    btnFlightplan.setPreferredSize(new java.awt.Dimension(70, 70));
    btnFlightplan.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
    btnFlightplan.addActionListener((java.awt.event.ActionEvent evt) -> 
    {
        getPresenter().displayTabDep();
    });
    panelButtons.add(btnFlightplan);

    frame.getContentPane().add(panelButtons, java.awt.BorderLayout.NORTH);
  }

  private void createPanelButtonsAdd()
  {
    panelButtonsAdd = new JPanel();
    panelButtonsAdd.setBorder(javax.swing.BorderFactory.createEtchedBorder());
    frame.getContentPane().add(panelButtonsAdd, java.awt.BorderLayout.CENTER);
    panelButtonsAdd.setLayout(new java.awt.FlowLayout(java.awt.FlowLayout.LEFT));

    // Dummy button
    btnFlightplanDummy = new JButton();
    btnFlightplanDummy.setAlignmentY(0.0F);
    btnFlightplanDummy.setEnabled(false);
    btnFlightplanDummy.setVisible(false);
    btnFlightplanDummy.setMaximumSize(new java.awt.Dimension(50, 50));
    btnFlightplanDummy.setMinimumSize(new java.awt.Dimension(50, 50));
    btnFlightplanDummy.setPreferredSize(new java.awt.Dimension(50, 50));
    panelButtonsAdd.add(btnFlightplanDummy);

    addButtonsFlightplan();
  }

  public void addButtonsFlightplan()
  {
    removeButtons();
    Dimension buttonDim = new Dimension(50, 50);
    Font buttonFont = new Font("Helvetica", Font.PLAIN, 10);
    btnPnlDeparture = new JButton("DEP");
    btnPnlDeparture.setPreferredSize(buttonDim);
    btnPnlDeparture.setFont(buttonFont);
    btnPnlDeparture.setVisible(true);
    btnPnlDeparture.addActionListener((ActionEvent e) -> 
    {
        getPresenter().displayTabDep();
    }); 

    panelButtonsAdd.add(btnPnlDeparture);

    btnPnlDestination = new JButton("ARR");
    btnPnlDestination.setPreferredSize(buttonDim);
    btnPnlDestination.setFont(buttonFont);
    btnPnlDestination.setVisible(true);
    btnPnlDestination.addActionListener((ActionEvent e) -> 
    {
        getPresenter().displayTabDest();
    });
    panelButtonsAdd.add(btnPnlDestination);

    btnPnlAlternate = new JButton("ALT");
    btnPnlAlternate.setPreferredSize(buttonDim);
    btnPnlAlternate.setFont(buttonFont);
    btnPnlAlternate.setVisible(true);
    btnPnlAlternate.addActionListener((ActionEvent e) -> 
    {
        getPresenter().displayTabAlt();
    });
    panelButtonsAdd.add(btnPnlAlternate);

    btnPnlWindsAloft = new JButton("WINDS");
    btnPnlWindsAloft.setPreferredSize(buttonDim);
    btnPnlWindsAloft.setFont(buttonFont);
    btnPnlWindsAloft.setVisible(true);
    btnPnlWindsAloft.addActionListener((ActionEvent e) -> 
    {
        getPresenter().displayTabWindsAloft();
    });
    panelButtonsAdd.add(btnPnlWindsAloft);

    panelButtonsAdd.revalidate();
    panelButtonsAdd.repaint();
  }


  private void removeButtons()
  {
    panelButtonsAdd.removeAll();
    panelButtonsAdd.revalidate();
    panelButtonsAdd.repaint();
  }

  private void createPanelDeparture()
  {
    java.awt.GridBagConstraints gridBagConstraints;

    pnlDep = new JPanel();
    pnlDep.setLayout(new java.awt.BorderLayout());

    pnlDepAirport = new JPanel();
    pnlDepAirport.setLayout(new java.awt.GridBagLayout());

    btnAddDep = new JButton();
    btnAddDep.setText("ADD");
    btnAddDep.setMaximumSize(new java.awt.Dimension(35, 35));
    btnAddDep.setMinimumSize(new java.awt.Dimension(35, 35));
    btnAddDep.setPreferredSize(new java.awt.Dimension(35, 35));
    btnAddDep.addActionListener((java.awt.event.ActionEvent evt) -> 
    {
        JFrame f = new JFrame(); 
        JDialog modalDialog = new JDialog(f, "Busy", Dialog.ModalityType.MODELESS);
        modalDialog.setSize(200, 100);
        modalDialog.setLocationRelativeTo(f);
        modalDialog.setUndecorated(true);
        // Remove menu buttons
        modalDialog.getRootPane().setWindowDecorationStyle(JRootPane.NONE);
        modalDialog.getContentPane().setBackground( Color.WHITE );
        // Add rotating activity indicator
        ImageIcon loading = new ImageIcon("src/images/activityIndicator.gif");
        modalDialog.add(new JLabel("Please wait... ", loading, JLabel.CENTER));
        // Set activity indicator visible
        modalDialog.setVisible(true);

        new Thread(() ->
        {
            getPresenter().addDeparture(); 
            SwingUtilities.invokeLater(() ->
            {
                modalDialog.setVisible(false);
                modalDialog.dispose();
            });
        }).start();
    });
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.insets = new java.awt.Insets(5, 15, 5, 5);
    pnlDepAirport.add(btnAddDep, gridBagConstraints);

    pnlDep.add(pnlDepAirport);
  }

  private void createPanelDestination()
  {
    java.awt.GridBagConstraints gridBagConstraints;

    pnlDest = new JPanel();
    pnlDest.setLayout(new java.awt.BorderLayout());

    pnlDestAirport = new javax.swing.JPanel();
    pnlDestAirport.setLayout(new java.awt.GridBagLayout());

    btnAddDest = new javax.swing.JButton();
    btnAddDest.setText("jButton1");
    btnAddDest.setMaximumSize(new java.awt.Dimension(35, 35));
    btnAddDest.setMinimumSize(new java.awt.Dimension(35, 35));
    btnAddDest.setPreferredSize(new java.awt.Dimension(35, 35));
    btnAddDest.addActionListener((java.awt.event.ActionEvent evt) -> 
    {
        JFrame f = new JFrame(); 
        JDialog modalDialog = new JDialog(f, "Busy", Dialog.ModalityType.MODELESS);
        modalDialog.setSize(200, 100);
        modalDialog.setLocationRelativeTo(f);
        modalDialog.setUndecorated(true);
        // Remove menu buttons
        modalDialog.getRootPane().setWindowDecorationStyle(JRootPane.NONE);
        modalDialog.getContentPane().setBackground( Color.WHITE );
        // Add rotating activity indicator
        ImageIcon loading = new ImageIcon("src/images/activityIndicator.gif");
        modalDialog.add(new JLabel("Please wait... ", loading, JLabel.CENTER));
        // Set activity indicator visible
        modalDialog.setVisible(true);

        new Thread(() ->
        {
            getPresenter().addDestination(); 
            SwingUtilities.invokeLater(() ->
            {
                //displayValues();

                modalDialog.setVisible(false);
                modalDialog.dispose();

            });
        }).start();
    });
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.insets = new java.awt.Insets(5, 15, 5, 5);
    pnlDestAirport.add(btnAddDest, gridBagConstraints);

    pnlDest.add(pnlDestAirport);
  }

  private void createPanelAlternate()
  {
    java.awt.GridBagConstraints gridBagConstraints;

    pnlAlt = new JPanel();
    pnlAlt.setLayout(new java.awt.BorderLayout());

    pnlAltAirport = new JPanel();
    pnlAltAirport.setLayout(new java.awt.GridBagLayout());

    btnAddAlt = new JButton();
    btnAddAlt.setText("ADD");
    btnAddAlt.setMaximumSize(new java.awt.Dimension(35, 35));
    btnAddAlt.setMinimumSize(new java.awt.Dimension(35, 35));
    btnAddAlt.setPreferredSize(new java.awt.Dimension(35, 35));
    btnAddAlt.addActionListener((java.awt.event.ActionEvent evt) -> 
    {
        JFrame f = new JFrame(); 
        JDialog modalDialog = new JDialog(f, "Busy", Dialog.ModalityType.MODELESS);
        modalDialog.setSize(200, 100);
        modalDialog.setLocationRelativeTo(f);
        modalDialog.setUndecorated(true);
        // Remove menu buttons
        modalDialog.getRootPane().setWindowDecorationStyle(JRootPane.NONE);
        modalDialog.getContentPane().setBackground( Color.WHITE );
        // Add rotating activity indicator
        ImageIcon loading = new ImageIcon("src/images/activityIndicator.gif");
        modalDialog.add(new JLabel("Please wait... ", loading, JLabel.CENTER));
        // Set activity indicator visible
        modalDialog.setVisible(true);

        new Thread(() ->
        {
            getPresenter().addAlternate(); 
            SwingUtilities.invokeLater(() ->
            {
                modalDialog.setVisible(false);
                modalDialog.dispose();
            });
        }).start();
    });
    gridBagConstraints = new java.awt.GridBagConstraints();
    gridBagConstraints.insets = new java.awt.Insets(5, 15, 5, 5);
    pnlAltAirport.add(btnAddAlt, gridBagConstraints);

    pnlAlt.add(pnlAltAirport);
  }

  public void createPanelWindsAloft()
  {
    pnlWindsAloftInfo = new javax.swing.JPanel();
    pnlWindsAloftInfo.setLayout(new java.awt.GridLayout(1, 0));

    pnlWindsAloftTable = new javax.swing.JPanel();
    pnlWindsAloftTable.setLayout(new BorderLayout());

    javax.swing.JTable tblWindsAloft = new javax.swing.JTable(new Model_TableWindsAloft(createDataForWindsTable()));

    JScrollPane scrollWindsAloft = new JScrollPane(tblWindsAloft,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    tblWindsAloft.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
    tblWindsAloft.setFillsViewportHeight(true);
    pnlWindsAloftTable.add(scrollWindsAloft, BorderLayout.CENTER); 

    pnlWindsAloftInfo.add(pnlWindsAloftTable);
    pnlWindsAloft.add(pnlWindsAloftInfo, java.awt.BorderLayout.CENTER);
  }

  public List<List<String>> createDataForWindsTable()
  {
    List<List<String>> finalResult = new ArrayList<>();

    System.out.println("SIZE: "+finalResult.size());

    for (int i=0; i<appSingleton.flightPlanShared.size(); i++)
    {    
        String icao;
        String name;
        String type;

        if(appSingleton.flightPlanShared.get(i).size()>2)
        {
            icao = appSingleton.flightPlanShared.get(i).get(2);
            name = appSingleton.flightPlanShared.get(i).get(1);
            type = appSingleton.flightPlanShared.get(i).get(0);
        }
        else
        {
            icao = "";
            name = "";
            type = "";
        }

            List<String> components = new ArrayList<>();

            components.add(icao);
            components.add(name);
            components.add(type);

            System.out.println("COMPONENTS: "+components);

            finalResult.add(components);
    }

    /* THIS WORKS!
    String a1 = "LAS VEGAS/MC CARRAN ";
    String a2 = "KLAS";
    String a3 = "PORTDEP";

    List<String> a = new ArrayList<>();
    a.add(a1);
    a.add(a2);
    a.add(a3);

    String b1 = "LOS ANGELES INTL";
    String b2 = "KLAX";
    String b3 = "PORTDEST";
    List<String> b = new ArrayList<>();
    b.add(b1);
    b.add(b2);
    b.add(b3);

    String c1 = "SEATTLE-TACOMA INTL";
    String c2 = "KSEA";
    String c3 = "PORTALT";
    List<String> c = new ArrayList<>();
    c.add(c1);
    c.add(c2);
    c.add(c3);

    finalResult.add(a);
    finalResult.add(b);
    finalResult.add(c);
    */

    System.out.println("DATA CREATED: "+finalResult);

    return finalResult;
  }

  public Presenter getPresenter() {
    return presenter;
  }

  public void setPresenter(Presenter presenter) {
    this.presenter = presenter;
  }
}

主要

package testjtable;

import javax.swing.SwingUtilities;
import models.Model_Flightplan;
import presenters.Presenter;
import views.View_MainFrame;

public class TestJTable {

  public static void main(String[] args) 
  {
    SwingUtilities.invokeLater(() -> 
    {
        View_MainFrame viewMainFrame = new View_MainFrame();
        viewMainFrame.setPresenter(new Presenter(viewMainFrame, new Model_Flightplan(viewMainFrame)));
    });
  }
}

数据不会出现在 table 内，除非 (!!!) 我在应用程序外单击。

编辑：

我通过使用 setValueAt() 方法更新模型解决了这个问题：

@Override
public void setValueAt(Object value, int row, int col) 
{
    setTableData(appSingleton.flightPlanShared);
    fireTableCellUpdated(row, col);     
}

Answer 1

您似乎正在创建一个新的 JTable 和一个容纳它的新 JPanel，每次按下 create winds aloft 按钮。

这是您的 btnPnlWindsAloft JButton 的 ActionListener：

btnPnlWindsAloft.addActionListener((ActionEvent e) -> {
    getPresenter().displayTabWindsAloft();
});

注意它调用了 getPresenter().displayTabWindsAloft(); 即：

public void displayTabWindsAloft() {
    CardLayout card = (CardLayout) viewMainFrame.getPanelContext().getLayout();
    card.show(viewMainFrame.getPanelContext(), "cardWindsAloft");

    viewMainFrame.addButtonsFlightplan();
    viewMainFrame.btnPnlWindsAloft.setEnabled(false);

    viewMainFrame.createPanelWindsAloft();
}

并注意此方法调用 viewMainFrame.createPanelWindsAloft(); 即：

public void createPanelWindsAloft() {
    pnlWindsAloftInfo = new javax.swing.JPanel();
    pnlWindsAloftInfo.setLayout(new java.awt.GridLayout(1, 0));

    pnlWindsAloftTable = new javax.swing.JPanel();
    pnlWindsAloftTable.setLayout(new BorderLayout());

    javax.swing.JTable tblWindsAloft = new javax.swing.JTable(
            new Model_TableWindsAloft(createDataForWindsTable()));

    JScrollPane scrollWindsAloft = new JScrollPane(tblWindsAloft,
            JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
            JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    tblWindsAloft.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
    tblWindsAloft.setFillsViewportHeight(true);
    pnlWindsAloftTable.add(scrollWindsAloft, BorderLayout.CENTER);

    pnlWindsAloftInfo.add(pnlWindsAloftTable);
    pnlWindsAloft.add(pnlWindsAloftInfo, java.awt.BorderLayout.CENTER);
}

... 每次调用此方法时，它都会创建一个新的 pnlWindsAloftInfo JPanel、一个新的 pnlWindsAloftTable JPanel、一个新的 tblWindsAloft JTable，它通过调用 table 模型填充新的 table =16=]。同样，您为什么要不必要地重新创建这些组件和模型？

不要这样做 -- 只创建一次关键组件，然后在程序运行时运行，更改 JTable 模型的状态以及 "card" 保存 JTable 的 JPanel，但不要继续重新创建 JTable 和模型，其中一些保存数据，一些不保存数据。

此外，您的程序的复杂性不必要地巨大，这可能会阻止您看到问题 - 重构并简单地 everything.

附带问题：您正在设置关键组件的大小几乎可以保证它们不会在大多数系统上正确显示（例如我的系统，其中按钮文本显示为 ...）。你也要避免这种情况。

我当前的代码 MCVE：

import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Color;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRootPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;

public class TestJTable {

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            View_MainFrame viewMainFrame = new View_MainFrame();
            viewMainFrame.setPresenter(
                    new Presenter(viewMainFrame, new Model_Flightplan(viewMainFrame)));
        });
    }
}

class View_MainFrame {
    AppSingleton appSingleton = AppSingleton.getInstance();
    private Presenter presenter;
    private JPanel panelContext;

    private JFrame frame;

    public JPanel pnlDep;
    public JPanel pnlDest;
    public JPanel pnlAlt;
    public JPanel pnlWindsAloft;
    public JPanel panelButtons;
    public JButton btnFlightplan;
    public JPanel panelButtonsAdd;
    public JButton btnFlightplanDummy;
    public JPanel pnlDepAirport;
    private JButton btnAddDep;

    private javax.swing.JPanel pnlDestAirport;
    public JButton btnAddDest;

    private javax.swing.JPanel pnlAltAirport;
    public JButton btnAddAlt;

    private javax.swing.JPanel pnlWindsAloftInfo;
    private javax.swing.JPanel pnlWindsAloftTable;
    public JButton btnPnlDeparture;
    public JButton btnPnlDestination;
    public JButton btnPnlAlternate;
    public JButton btnPnlWindsAloft;

    public View_MainFrame() {
        createUI();
    }

    private void createUI() {
        JFrame.setDefaultLookAndFeelDecorated(true);
        frame = new JFrame("iGoDispatch IXEG Boeing-733");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(
                new javax.swing.BoxLayout(frame.getContentPane(), javax.swing.BoxLayout.Y_AXIS));

        Dimension frameSize = new Dimension(1050, 700);
        Dimension frameSizeMin = new Dimension(500, 200);
        frame.setPreferredSize(frameSize);
        frame.setMinimumSize(frameSizeMin);

        createPanelButtons();
        createPanelButtonsAdd();
        createPanelDeparture();
        createPanelDestination();
        createPanelAlternate();
        pnlWindsAloft = new JPanel();
        pnlWindsAloft.setLayout(new java.awt.BorderLayout());
        createPanelWindsAloft();

        setPanelContext(new JPanel());
        getPanelContext().setLayout(new java.awt.CardLayout());
        frame.getContentPane().add(getPanelContext(), java.awt.BorderLayout.SOUTH);

        getPanelContext().add(pnlDep, "cardDep");
        getPanelContext().add(pnlDest, "cardDest");
        getPanelContext().add(pnlAlt, "cardAlt");
        getPanelContext().add(pnlWindsAloft, "cardWindsAloft");

        frame.pack();
        frame.setVisible(true);
        frame.setLocationRelativeTo(null);
    }

    public JPanel getPanelContext() {
        return panelContext;
    }

    public void setPanelContext(JPanel panelContext) {
        this.panelContext = panelContext;
    }

    private void createPanelButtons() {
        panelButtons = new JPanel();
        panelButtons.setBorder(
                new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
        panelButtons.setLayout(new java.awt.GridLayout(1, 0));
        Dimension panelButtonsMinSize = new Dimension(1050, 60);
        panelButtons.setMinimumSize(panelButtonsMinSize);

        btnFlightplan = new JButton();
        btnFlightplan.setFont(new java.awt.Font("Lucida Grande", 1, 13));
        btnFlightplan.setText("Flightplan");
        btnFlightplan.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
        btnFlightplan.setIconTextGap(5);
        btnFlightplan.setMaximumSize(new java.awt.Dimension(90, 70));
        btnFlightplan.setMinimumSize(new java.awt.Dimension(90, 70));
        btnFlightplan.setPreferredSize(new java.awt.Dimension(90, 70));
        btnFlightplan.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
        btnFlightplan.addActionListener((java.awt.event.ActionEvent evt) -> {
            getPresenter().displayTabDep();
        });
        panelButtons.add(btnFlightplan);

        frame.getContentPane().add(panelButtons, java.awt.BorderLayout.NORTH);
    }

    private void createPanelButtonsAdd() {
        panelButtonsAdd = new JPanel();
        panelButtonsAdd.setBorder(javax.swing.BorderFactory.createEtchedBorder());
        frame.getContentPane().add(panelButtonsAdd, java.awt.BorderLayout.CENTER);
        panelButtonsAdd.setLayout(new java.awt.FlowLayout(java.awt.FlowLayout.LEFT));
        btnFlightplanDummy = new JButton();
        btnFlightplanDummy.setAlignmentY(0.0F);
        btnFlightplanDummy.setEnabled(false);
        btnFlightplanDummy.setVisible(false);
        btnFlightplanDummy.setMaximumSize(new java.awt.Dimension(50, 50));
        btnFlightplanDummy.setMinimumSize(new java.awt.Dimension(50, 50));
        btnFlightplanDummy.setPreferredSize(new java.awt.Dimension(50, 50));
        panelButtonsAdd.add(btnFlightplanDummy);

        addButtonsFlightplan();
    }

    public void addButtonsFlightplan() {
        removeButtons();
        Dimension buttonDim = new Dimension(150, 50);
        Font buttonFont = new Font("Helvetica", Font.PLAIN, 10);
        btnPnlDeparture = new JButton("DEP");
        btnPnlDeparture.setPreferredSize(buttonDim);
        btnPnlDeparture.setFont(buttonFont);
        btnPnlDeparture.setVisible(true);
        btnPnlDeparture.addActionListener((ActionEvent e) -> {
            getPresenter().displayTabDep();
        });

        panelButtonsAdd.add(btnPnlDeparture);

        btnPnlDestination = new JButton("ARR");
        btnPnlDestination.setPreferredSize(buttonDim);
        btnPnlDestination.setFont(buttonFont);
        btnPnlDestination.setVisible(true);
        btnPnlDestination.addActionListener((ActionEvent e) -> {
            getPresenter().displayTabDest();
        });
        panelButtonsAdd.add(btnPnlDestination);

        btnPnlAlternate = new JButton("ALT");
        btnPnlAlternate.setPreferredSize(buttonDim);
        btnPnlAlternate.setFont(buttonFont);
        btnPnlAlternate.setVisible(true);
        btnPnlAlternate.addActionListener((ActionEvent e) -> {
            getPresenter().displayTabAlt();
        });
        panelButtonsAdd.add(btnPnlAlternate);

        btnPnlWindsAloft = new JButton("WINDS");
        btnPnlWindsAloft.setPreferredSize(buttonDim);
        btnPnlWindsAloft.setFont(buttonFont);
        btnPnlWindsAloft.setVisible(true);
        btnPnlWindsAloft.addActionListener((ActionEvent e) -> {
            getPresenter().displayTabWindsAloft();
        });
        panelButtonsAdd.add(btnPnlWindsAloft);

        panelButtonsAdd.revalidate();
        panelButtonsAdd.repaint();
    }

    private void removeButtons() {
        panelButtonsAdd.removeAll();
        panelButtonsAdd.revalidate();
        panelButtonsAdd.repaint();
    }

    private void createPanelDeparture() {
        java.awt.GridBagConstraints gridBagConstraints;

        pnlDep = new JPanel();
        pnlDep.setLayout(new java.awt.BorderLayout());

        pnlDepAirport = new JPanel();
        pnlDepAirport.setLayout(new java.awt.GridBagLayout());

        btnAddDep = new JButton();
        btnAddDep.setText("ADD");
        btnAddDep.setMaximumSize(new java.awt.Dimension(75, 35));
        btnAddDep.setMinimumSize(new java.awt.Dimension(75, 35));
        btnAddDep.setPreferredSize(new java.awt.Dimension(75, 35));
        btnAddDep.addActionListener((java.awt.event.ActionEvent evt) -> {
            JFrame f = new JFrame();
            JDialog modalDialog = new JDialog(f, "Busy", Dialog.ModalityType.MODELESS);
            modalDialog.setSize(200, 100);
            modalDialog.setLocationRelativeTo(f);
            modalDialog.setUndecorated(true);
            modalDialog.getRootPane().setWindowDecorationStyle(JRootPane.NONE);
            modalDialog.getContentPane().setBackground(Color.WHITE);
            modalDialog.add(new JLabel("Please wait... ", JLabel.CENTER));
            modalDialog.setVisible(true);

            new Thread(() -> {
                getPresenter().addDeparture();
                SwingUtilities.invokeLater(() -> {
                    modalDialog.setVisible(false);
                    modalDialog.dispose();
                });
            }).start();
        });
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.insets = new java.awt.Insets(5, 15, 5, 5);
        pnlDepAirport.add(btnAddDep, gridBagConstraints);

        pnlDep.add(pnlDepAirport);
    }

    private void createPanelDestination() {
        java.awt.GridBagConstraints gridBagConstraints;

        pnlDest = new JPanel();
        pnlDest.setLayout(new java.awt.BorderLayout());

        pnlDestAirport = new javax.swing.JPanel();
        pnlDestAirport.setLayout(new java.awt.GridBagLayout());

        btnAddDest = new javax.swing.JButton();
        btnAddDest.setText("jButton1");
        btnAddDest.setMaximumSize(new java.awt.Dimension(75, 35));
        btnAddDest.setMinimumSize(new java.awt.Dimension(75, 35));
        btnAddDest.setPreferredSize(new java.awt.Dimension(75, 35));
        btnAddDest.addActionListener((java.awt.event.ActionEvent evt) -> {
            JFrame f = new JFrame();
            JDialog modalDialog = new JDialog(f, "Busy", Dialog.ModalityType.MODELESS);
            modalDialog.setSize(200, 100);
            modalDialog.setLocationRelativeTo(f);
            modalDialog.setUndecorated(true);
            modalDialog.getRootPane().setWindowDecorationStyle(JRootPane.NONE);
            modalDialog.getContentPane().setBackground(Color.WHITE);
            modalDialog.add(new JLabel("Please wait... ", JLabel.CENTER));
            modalDialog.setVisible(true);

            new Thread(() -> {
                getPresenter().addDestination();
                SwingUtilities.invokeLater(() -> {

                    modalDialog.setVisible(false);
                    modalDialog.dispose();

                });
            }).start();
        });
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.insets = new java.awt.Insets(5, 15, 5, 5);
        pnlDestAirport.add(btnAddDest, gridBagConstraints);

        pnlDest.add(pnlDestAirport);
    }

    private void createPanelAlternate() {
        java.awt.GridBagConstraints gridBagConstraints;

        pnlAlt = new JPanel();
        pnlAlt.setLayout(new java.awt.BorderLayout());

        pnlAltAirport = new JPanel();
        pnlAltAirport.setLayout(new java.awt.GridBagLayout());

        btnAddAlt = new JButton();
        btnAddAlt.setText("ADD");
        btnAddAlt.setMaximumSize(new java.awt.Dimension(75, 35));
        btnAddAlt.setMinimumSize(new java.awt.Dimension(75, 35));
        btnAddAlt.setPreferredSize(new java.awt.Dimension(75, 35));
        btnAddAlt.addActionListener((java.awt.event.ActionEvent evt) -> {
            JFrame f = new JFrame();
            JDialog modalDialog = new JDialog(f, "Busy", Dialog.ModalityType.MODELESS);
            modalDialog.setSize(200, 100);
            modalDialog.setLocationRelativeTo(f);
            modalDialog.setUndecorated(true);
            modalDialog.getRootPane().setWindowDecorationStyle(JRootPane.NONE);
            modalDialog.getContentPane().setBackground(Color.WHITE);
            modalDialog.add(new JLabel("Please wait... ", JLabel.CENTER));
            modalDialog.setVisible(true);

            new Thread(() -> {
                getPresenter().addAlternate();
                SwingUtilities.invokeLater(() -> {
                    modalDialog.setVisible(false);
                    modalDialog.dispose();
                });
            }).start();
        });
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.insets = new java.awt.Insets(5, 15, 5, 5);
        pnlAltAirport.add(btnAddAlt, gridBagConstraints);

        pnlAlt.add(pnlAltAirport);
    }

    public void createPanelWindsAloft() {
        pnlWindsAloftInfo = new javax.swing.JPanel();
        pnlWindsAloftInfo.setLayout(new java.awt.GridLayout(1, 0));

        pnlWindsAloftTable = new javax.swing.JPanel();
        pnlWindsAloftTable.setLayout(new BorderLayout());

        javax.swing.JTable tblWindsAloft = new javax.swing.JTable(
                new Model_TableWindsAloft(createDataForWindsTable()));

        JScrollPane scrollWindsAloft = new JScrollPane(tblWindsAloft,
                JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        tblWindsAloft.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
        tblWindsAloft.setFillsViewportHeight(true);
        pnlWindsAloftTable.add(scrollWindsAloft, BorderLayout.CENTER);

        pnlWindsAloftInfo.add(pnlWindsAloftTable);
        pnlWindsAloft.add(pnlWindsAloftInfo, java.awt.BorderLayout.CENTER);
    }

    public List<List<String>> createDataForWindsTable() {
        List<List<String>> finalResult = new ArrayList<>();

        System.out.println("SIZE: " + finalResult.size());

        for (int i = 0; i < appSingleton.flightPlanShared.size(); i++) {
            String icao;
            String name;
            String type;

            if (appSingleton.flightPlanShared.get(i).size() > 2) {
                icao = appSingleton.flightPlanShared.get(i).get(2);
                name = appSingleton.flightPlanShared.get(i).get(1);
                type = appSingleton.flightPlanShared.get(i).get(0);
            } else {
                icao = "";
                name = "";
                type = "";
            }

            List<String> components = new ArrayList<>();

            components.add(icao);
            components.add(name);
            components.add(type);

            System.out.println("COMPONENTS: " + components);

            finalResult.add(components);
        }

        /*
         * THIS WORKS! String a1 = "LAS VEGAS/MC CARRAN "; String a2 = "KLAS";
         * String a3 = "PORTDEP";
         * 
         * List<String> a = new ArrayList<>(); a.add(a1); a.add(a2); a.add(a3);
         * 
         * String b1 = "LOS ANGELES INTL"; String b2 = "KLAX"; String b3 =
         * "PORTDEST"; List<String> b = new ArrayList<>(); b.add(b1); b.add(b2);
         * b.add(b3);
         * 
         * String c1 = "SEATTLE-TACOMA INTL"; String c2 = "KSEA"; String c3 =
         * "PORTALT"; List<String> c = new ArrayList<>(); c.add(c1); c.add(c2);
         * c.add(c3);
         * 
         * finalResult.add(a); finalResult.add(b); finalResult.add(c);
         */

        System.out.println("DATA CREATED: " + finalResult);

        return finalResult;
    }

    public Presenter getPresenter() {
        return presenter;
    }

    public void setPresenter(Presenter presenter) {
        this.presenter = presenter;
    }
}

class Presenter {
    private final View_MainFrame viewMainFrame;
    private final Model_Flightplan model;

    public Presenter(View_MainFrame viewMainFrame, Model_Flightplan model) {
        this.viewMainFrame = viewMainFrame;
        this.model = model;
    }

    public void displayTabDep() {
        CardLayout card = (CardLayout) viewMainFrame.getPanelContext().getLayout();
        card.show(viewMainFrame.getPanelContext(), "cardDep");
        viewMainFrame.addButtonsFlightplan();
        viewMainFrame.btnPnlDeparture.setEnabled(false);
    }

    public void displayTabDest() {
        CardLayout card = (CardLayout) viewMainFrame.getPanelContext().getLayout();
        card.show(viewMainFrame.getPanelContext(), "cardDest");
        viewMainFrame.addButtonsFlightplan();
        viewMainFrame.btnPnlDestination.setEnabled(false);
    }

    public void displayTabAlt() {
        CardLayout card = (CardLayout) viewMainFrame.getPanelContext().getLayout();
        card.show(viewMainFrame.getPanelContext(), "cardAlt");
        viewMainFrame.addButtonsFlightplan();
        viewMainFrame.btnPnlAlternate.setEnabled(false);
    }

    public void displayTabWindsAloft() {
        CardLayout card = (CardLayout) viewMainFrame.getPanelContext().getLayout();
        card.show(viewMainFrame.getPanelContext(), "cardWindsAloft");

        viewMainFrame.addButtonsFlightplan();
        viewMainFrame.btnPnlWindsAloft.setEnabled(false);

        viewMainFrame.createPanelWindsAloft();
    }

    public void addDeparture() {
        model.addDepartureAirport();
    }

    public void addDestination() {
        model.addDestinationAirport();
    }

    public void addAlternate() {
        model.addAlternateAirport();
    }
}

class Model_TableWindsAloft extends AbstractTableModel {

    String[] columnNames = { "ICAO", "Name", "Type" };

    private List<List<String>> tableData = new ArrayList<>();

    public Model_TableWindsAloft(List<List<String>> tableData) {
        this.tableData = tableData;
        System.out.println("CONSTRUCTOR? " + tableData);
    }

    @Override
    public int getRowCount() {
        System.out.println("DATA COUNT? " + tableData.size());
        return (tableData.size());
    }

    @Override
    public int getColumnCount() {
        return (columnNames.length);
    }

    @Override
    public String getColumnName(int column) {
        return columnNames[column];
    }

    @Override
    public Object getValueAt(int rowIndex, int columnIndex) {
        System.out.println("WHAT IS DATA 1? " + tableData);

        List<String> data = tableData.get(rowIndex);

        System.out.println("WHAT IS DATA 2? " + data);

        if (data.size() >= 3) {
            switch (columnIndex) {
            case 0:
                return data.get(0);
            case 1:
                return data.get(1);
            case 2:
                return data.get(2);
            default:
                return null;
            }
        } else {
            return null;
        }
    }
}

class Model_Flightplan {
    AppSingleton appSingleton = AppSingleton.getInstance();
    private Presenter presenter;
    private View_MainFrame viewMainFrame;

    public Model_Flightplan(View_MainFrame viewMainFrame) {
        this.viewMainFrame = viewMainFrame;
    }

    public Presenter getPresenter() {
        return presenter;
    }

    public void setPresenter(Presenter presenter) {
        this.presenter = presenter;
    }

    public void addDepartureAirport() {
        List<String> component = new ArrayList<>();
        component.add("KLAS");
        component.add("KLAS");
        component.add("KLAS");

        appSingleton.flightPlanShared.set(0, component);
    }

    public void addDestinationAirport() {
        List<String> component = new ArrayList<>();
        component.add("KLAX");
        component.add("KLAX");
        component.add("KLAX");

        appSingleton.flightPlanShared.set((appSingleton.flightPlanShared.size() - 2), component);
    }

    public void addAlternateAirport() {
        List<String> component = new ArrayList<>();
        component.add("KSEA");
        component.add("KSEA");
        component.add("KSEA");

        appSingleton.flightPlanShared.set((appSingleton.flightPlanShared.size() - 1), component);
    }
}

class AppSingleton {
    private static AppSingleton instance = null;

    public List<List<String>> flightPlanShared = new ArrayList<List<String>>() {
        {
            add(Arrays.asList(""));
            add(Arrays.asList(""));
            add(Arrays.asList(""));
        }
    };

    private AppSingleton() {

    }

    public static AppSingleton getInstance() {
        if (instance == null) {
            instance = new AppSingleton();
        }
        return instance;
    }
}

Java AbstractTableModel：getValueAt 不使用更新的数据

Java AbstractTableModel: getValueAt does not use updated data

java

swing

abstracttablemodel