Reputation: 81
I have a JTable and it setAutoCreateRowSorter(true)
so that I can sort the row. When I add a row to the table without using sorting, it works fine. But When I sort the table first, (just clicking the column title and rows will be sorted), then add a row to the table bugged.
I used tableModel.addRow(new Object[]{row,row});
to add a row, TableModelListener to listen the insert event. The bug is in the TableModelListener, which means I couldn't find the row I just added,
java.lang.ArrayIndexOutOfBoundsException: 3
Here's my SSCCE, it's a dialog with a table, clicking the button 'add' to Add a row to the table.
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.DefaultTableModel;
import java.awt.GridLayout;
import javax.swing.JTable;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JScrollPane;
public class MainTable extends JDialog {
private static final long serialVersionUID = 156332386872772726L;
private final JPanel contentPanel = new JPanel();
private DefaultTableModel tableModel;
private JTable table;
public static void main(String[] args) {
try {
MainTable dialog = new MainTable();
dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
dialog.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
public MainTable() {
setBounds(100, 100, 450, 300);
getContentPane().setLayout(new BorderLayout());
contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
getContentPane().add(contentPanel, BorderLayout.CENTER);
contentPanel.setLayout(new GridLayout(1, 0, 0, 0));
{
JScrollPane scrollPane = new JScrollPane();
contentPanel.add(scrollPane);
{
table = new JTable();
table.setAutoCreateRowSorter(true);
tableModel = new DefaultTableModel(new String[]{"first","second"},0);
table.setModel(tableModel);
tableModel.addTableModelListener(new TableModelListener(){
@Override
public void tableChanged(TableModelEvent arg0) {
if(arg0.getType() == TableModelEvent.INSERT){
int row = arg0.getFirstRow();
System.out.println(table.getValueAt(row, 0));//bug!! I couldn't find the row I added.
}
}
});
scrollPane.setViewportView(table);
}
}
{
JPanel buttonPane = new JPanel();
buttonPane.setLayout(new FlowLayout(FlowLayout.RIGHT));
getContentPane().add(buttonPane, BorderLayout.SOUTH);
{
JButton okButton = new JButton("Add");
okButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
int row = tableModel.getRowCount();
tableModel.addRow(new Object[]{row,row});//click button to add a row
}
});
buttonPane.add(okButton);
getRootPane().setDefaultButton(okButton);
}
}
}
}
tableModel.insert()
instead tableModel.add()
,doesn't work.Upvotes: 0
Views: 409
Reputation: 324108
convert row index to model index doesn't work.
A TableModelListener
is a listener for changes to the TableModel
. So indexes in the TableModelEvent
are relative to the TableModel
.
System.out.println(table.getValueAt(row, 0));
Should be:
System.out.println(table.getModel().getValueAt(row, 0));
to get the data from the TableModel
.
Or if you want to get the data from the JTable
, then you need to use the convertRowIndexToView(...)
method.
Upvotes: 2