Cell event listener

Question

Hi,
Assume I have jtable which have three column: numberone, numbertwo, and result.....
I put value 1 into numberone column ( row one ), and put value 2 into numbertwo column (row one).... and when I press Enter or change the cell to down or left or right, suddenly result column is put value 3. This is simple addition jtable. How do I make such event listener. When I change the cell( after putting value in numberone column and numbertwo column ), the result column compute the value in numberone column and numbertwo column.

Answer 1

what's wrong????My testing stinks.import java.awt.*;
import javax.swing.event.*;
import javax.swing.*;
public class Test3 extends JFrame {
  JTable jt = new JTable(10,3);
  public Test3() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container content = getContentPane();
    content.add(new JScrollPane(jt), BorderLayout.CENTER);
    jt.getModel().addTableModelListener(new TableModelListener() {
      public void tableChanged(TableModelEvent tme) {
        int col=tme.getColumn(), row=tme.getFirstRow();
        if (col!=2) {
          try {
            int val0 = Integer.parseInt(jt.getValueAt(row, 0).toString()),
                val1 = Integer.parseInt(jt.getValueAt(row, 1).toString());
            jt.setValueAt(new Integer(val0 + val1), row, 2);
          } catch (Exception e) {
            jt.setValueAt("Error", row, 2);
    setSize(300,300);
    setVisible(true);
  public static void main(String[] args) { new Test3(); }
}