Sort rows in JTable except the last row

Question

Hi All,
I have a JTable, which contains columns with numbers. The last row contains column sums.
I want to be able to sort rows, but the last row with sums must remain motionless.
Does anyone know the solution of this problem?
Thanks in advance.

Answer 1

These two posts are my example. It works pretty good but there is one significant niggle - when moving a column the 'total' table does not move smoothly but it does move. I look forward to 'camickr' reducing this to about 1 line.
Part A.
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Font;
import java.text.DecimalFormat;
import java.util.Comparator;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.TableColumnModelEvent;
import javax.swing.event.TableColumnModelListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumnModel;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;
public class Sabre20090331
    static private class TotalizingTableComponent extends JScrollPane
        private TotalizingTableComponent(final TableModel tableModel)
            final SecondaryTableModel secondaryTableModel = new SecondaryTableModel(tableModel);
            final JTable secondaryTable = new JTable(secondaryTableModel);
            for (int i = 1; i < secondaryTableModel.getColumnCount(); i++)
                secondaryTable.getColumnModel().getColumn(i).setCellRenderer(new NumberCellRenderer());
            secondaryTable.getColumnModel().getColumn(0).setCellRenderer(new TitleCellRenderer());
            final TableColumnModel secondaryTableColumnModel = secondaryTable.getColumnModel();
            secondaryTable.setRowSelectionAllowed(false);
            final JTable primaryTable = new JTable(tableModel);
            for (int i = 1; i < tableModel.getColumnCount(); i++)
                primaryTable.getColumnModel().getColumn(i).setCellRenderer(new NumberCellRenderer());
            final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(tableModel);
            final DoubleComparator doubleComparator = new DoubleComparator();
            for (int i = 1; i < tableModel.getColumnCount(); i++)
                sorter.setComparator(i, doubleComparator);
            primaryTable.setRowSorter(sorter);
            primaryTable.getColumnModel().addColumnModelListener(new TableColumnModelListener()
                @Override
                public void columnAdded(TableColumnModelEvent e)
                    // System.out.println("columnAdded()" + e);
                @Override
                public void columnRemoved(TableColumnModelEvent e)
                    // System.out.println("columnRemoved()" + e);
                @Override
                public void columnMoved(TableColumnModelEvent e)
                    //System.out.println("columnMoved()" + e);
                    secondaryTableColumnModel.moveColumn(e.getFromIndex(), e.getToIndex());
                @Override
                public void columnMarginChanged(ChangeEvent e)
                    //System.out.println("columnMarginChanged()" + e);
                    final TableColumnModel cm = (TableColumnModel) e.getSource();
                    for (int i = 0; i < cm.getColumnCount(); i++)
                        secondaryTableColumnModel.getColumn(i).setPreferredWidth(cm.getColumn(i).getWidth());
                @Override
                public void columnSelectionChanged(ListSelectionEvent e)
                    //System.out.println("columnSelectionChanged()" + e);
            final JTableHeader primaryHeader = primaryTable.getTableHeader();
            JPanel inner = new JPanel(new BorderLayout());
            this.setColumnHeaderView(primaryHeader);
            this.setViewportView(inner);
            inner.add(primaryTable, BorderLayout.NORTH);
            inner.add(secondaryTable, BorderLayout.CENTER);
        public static void main(String[] args)
            final JFrame frame = new JFrame("Totalizing JTable Example");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            final TableModel tableModel = new PrimaryTableModel();
            frame.setContentPane(new TotalizingTableComponent(tableModel));
            frame.pack();
            frame.setVisible(true);
}Edited by: sabre150 on Apr 1, 2009 9:21 AM
Changed the layout of the inner panel so that the secondary table is now in the CENTER. This stops the secondary table becoming detached from the primary when one expands the frame beyond the prefferred size.