Footer row in a JTable

Question

What is the best way to put a footer row into a JTable? Does anyone have any sample code to do this?

The only approach I\'ve thought of so far is to put a special ro

Answer 1

import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import javax.swing.table.*;

class Application extends JFrame
{
    public Application()
    {
        this.setBounds(100,100,500,200);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        String data[][] = {{"a1","b1","c1"},{"a2","b2","c2"},{"a3","b3","c3"}};
        String columnNames[] = {"a","b","c"};

        JTable jtable = new JTable(new DefaultTableModel(data,columnNames));

        JScrollPane jscrollPane = new JScrollPane(jtable,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        jscrollPane.setBorder(new CompoundBorder(new MatteBorder(0,0,1,0,Color.gray),new EmptyBorder(0,0,0,0)));

        this.add(jscrollPane,BorderLayout.CENTER);


        JTable jtable_footer = new JTable(new DefaultTableModel(3,columnNames.length),jtable.getColumnModel());

        SyncListener syncListener = new SyncListener(jtable,jtable_footer);

        this.add(jtable_footer,BorderLayout.SOUTH);
    }

    public static void main(String args[])
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            public void run()
            {
                Application application = new Application();

                application.setVisible(true);
            }
        });
    }
}

class SyncListener implements TableColumnModelListener
{
    JTable jtable_data;
    JTable jtable_footer;

    public SyncListener(JTable main, JTable footer)
    {
        jtable_data = main;
        jtable_footer = footer;

        DefaultTableColumnModel dtcm = (DefaultTableColumnModel)jtable_data.getColumnModel();

        dtcm.removeColumnModelListener(dtcm.getColumnModelListeners()[1]);
        dtcm.addColumnModelListener(this);
    }

    public void columnMarginChanged(ChangeEvent changeEvent)
    {
        for (int column = 0; column < jtable_data.getColumnCount(); column++)
        {
            jtable_footer.getColumnModel().getColumn(column).setWidth(jtable_data.getColumnModel().getColumn(column).getWidth());
        }

        jtable_footer.repaint();
    }

    public void columnAdded(TableColumnModelEvent e){}
    public void columnMoved(TableColumnModelEvent e){}
    public void columnRemoved(TableColumnModelEvent e){}
    public void columnSelectionChanged(ListSelectionEvent e){}
}