How to listener a table cell

Question

I have this table cell editable and I want to listen when value changes (to update the database data) but I am not being able to do that, any help?
I also would like to activate the new cell value with ENTER key, the way it is now I have to get ou of the cell clicking outside somewhere or using TAB key to move.
I am using these tow classes to Editor and Renderer (for numbers):
import java.awt.*;
import java.text.*;
import javax.swing.table.*;
import javax.swing.*;
public class DecimalRenderer extends DefaultTableCellRenderer {
    DecimalFormat  formatter;
    public DecimalRenderer(String pattern) {
        this(new DecimalFormat(pattern));
    public DecimalRenderer(DecimalFormat formatter) {
        this.formatter = formatter;
        setHorizontalAlignment(JLabel.RIGHT);
    public void setValue(Object value) {
        setText((value == null) ? "" : formatter.format(((Double)value).doubleValue()));
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
        Component cell = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
        cell.setBackground( Color.white );
        cell.setForeground( Color.black );
        return cell;
import java.awt.*;
import javax.swing.table.*;
import javax.swing.*;
public class NumberCellEditor extends AbstractCellEditor implements TableCellEditor {
    //protected JTextField textField;
    protected JFormattedTextField textField;
    private JTable tableUsed;
    protected Object oldValue;
    public NumberCellEditor() {
        textField = new JFormattedTextField();
        textField.setEditable(true);
        textField.setHorizontalAlignment(SwingConstants.RIGHT);
        textField.setFont(new java.awt.Font("Tahoma", 1, 12));
        textField.setBackground(Color.white);
        textField.setForeground(Color.red);
    public NumberCellEditor(int decimal) {
        textField = new JFormattedTextField();
        textField.setEditable(true);
        textField.setHorizontalAlignment(SwingConstants.RIGHT);
        textField.setBackground(Color.white);
        textField.setForeground(Color.red);
        textField.setFormatterFactory(Lib.setFormatDouble(decimal));
        public NumberCellEditor(boolean currency, int decimal) {
        textField = new JFormattedTextField();
        textField.setEditable(true);
        textField.setHorizontalAlignment(SwingConstants.RIGHT);
        textField.setBackground(Color.white);
        textField.setForeground(Color.red);
        textField.setFormatterFactory(Lib.setCurrencyFormat(decimal));
    private void setConfig(){
        textField.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                if(tableUsed.isEditing()){
                    tableUsed.getCellEditor().stopCellEditing();
    public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
        //textField.setText(value.toString());
        textField.setValue(value);
        oldValue = value;
        this.tableUsed = table;
        String className = value.getClass().getName();
        System.out.println("Type: "+className);
        return textField;
    /** Returns the value contained in the editor */
    public Object getCellEditorValue() {
        String name = oldValue.getClass().getName();
        Object returnValue=null;
        try {
            if (name.equals("java.lang.Integer"))
                returnValue = new java.lang.Integer(textField.getText());
            else if (name.equals("java.lang.Double"))
                returnValue = (Double)textField.getValue(); //new java.lang.Double(textField.getText());
            else if (name.equals("java.lang.Float"))
                returnValue = new java.lang.Float(textField.getText());
            else if (name.equals("java.lang.Long"))
                returnValue = new java.lang.Long(textField.getText());
            else if (name.equals("java.lang.Short"))
                returnValue = new java.lang.Short(textField.getText());
            else if (name.equals("java.lang.Byte"))
                returnValue = new java.lang.Byte(textField.getText());
            else if (name.equals("java.math.BigDecimal"))
                returnValue = new java.math.BigDecimal(textField.getText());
            else if (name.equals("java.math.BigInteger"))
                returnValue = new java.math.BigInteger(textField.getText());
        } catch (NumberFormatException e) {}
        return returnValue;
}My code to that column/cell:
TableColumn columnValueService = tabelaListaQuantidade.getColumn(colunas[4]);
columnValueService.setPreferredWidth(150);
columnValueService.setCellRenderer(new DecimalRenderer("###,###,##0.00"));
columnValueService.setCellEditor(new NumberCellEditor(true, 2));I would appreciate any help.
Thanks

Answer 1

I want to listen when value changes Use a TableModelListener
I also would like to activate the new cell value with ENTER keyThis is the default behaviour with the default editors. I suggest you extend the default editor instead of extending the abstract editor