Add CheckBox to JTable

Question

How to add a checkBox in a column of my table?
I would like to add a checkbox in column 3. Where should I add the Listener to?

Answer 1

Here's a simple example using a JCheckBox as a renderer:
import java.awt.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
import java.text.*;
public class TableRenderer extends JFrame
    public TableRenderer()
        String[] columnNames = {"Date", "String", "Integer", "Decimal", "Boolean"};
        Object[][] data =
            {new Date(), "A", new Integer(1), new Double(5.1), new Boolean(true)},
            {new Date(), "B", new Integer(2), new Double(6.2), new Boolean(false)},
            {new Date(), "C", new Integer(3), new Double(7.3), new Boolean(true)},
            {new Date(), "D", new Integer(4), new Double(8.4), new Boolean(false)}
        DefaultTableModel model = new DefaultTableModel(data, columnNames);
        JTable table = new JTable( model )
            //  Returning the Class of each column will allow different
            //  renderers to be used based on Class
            public Class getColumnClass(int column)
                return getValueAt(0, column).getClass();
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        JScrollPane scrollPane = new JScrollPane( table );
        getContentPane().add( scrollPane );
        //  Create cell renderer
        TableCellRenderer centerRenderer = new CenterRenderer();
        //  Use renderer on a specific column
        TableColumn column = table.getColumnModel().getColumn(3);
        column.setCellRenderer( centerRenderer );
        //  Use renderer on a specific Class
        table.setDefaultRenderer(String.class, centerRenderer);
          scrollPane.getViewport().setBackground(Color.red);
    public static void main(String[] args)
        TableRenderer frame = new TableRenderer();
        frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
        frame.pack();
        frame.setVisible(true);
    **  Center the text and highlight the focused cell
    class CenterRenderer extends DefaultTableCellRenderer
        public CenterRenderer()
            setHorizontalAlignment( CENTER );
        public Component getTableCellRendererComponent(
            JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
            super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
            if (hasFocus)
                setBackground( Color.cyan );
            else if (isSelected)
                setBackground( table.getSelectionBackground() );
            else
                setBackground( table.getBackground() );
            return this;
}For more information on "Using Tables" see the Swing tutorial:
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html