Jbutton in Jtabel

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.table.*; 
// eventueel extra imports hier

public class Oefening3 extends JFrame {  
    
    public static void main(String[] argumentenRij) {
       JFrame frame = new Oefening3();
       frame.setSize(600,600);
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       frame.setTitle("Oefening3");
         // naam aanpassen als je Paneel van naam wijzigt !!!
       Paneel paneel = new Paneel();
       frame.setContentPane( paneel );
       frame.setVisible(true);    	
    }
}

class Paneel extends JPanel {
    // declaraties van de variabelen, schrap wat je niet gebruikt 
//----- hulp bij opstellen tabel -----------

	private JScrollPane scrollPane;
	private JTable tabel;

	
/////////////////////////////////////////////////////////////////////////////
    // Constructor
  public Paneel() {


	int rows = 6;
    int cols = 2;
    tabel = new JTable(rows, cols);
 
       DefaultTableModel model = new DefaultTableModel();
    JTable tabel = new JTable(model);
    
    // Create 2 columns
    model.addColumn("beschrijving");
    model.addColumn("informatie");
    model.addRow(new Object[]{"temperatuur", "v2"});
    model.addRow(new Object[]{"windsnelheid", "v2"});
    model.addRow(new Object[]{"luchtdruk", "v2"});
    model.addRow(new Object[]{"regenval", "v2"});
    model.addRow(new Object[]{"tekstvak", "info op halen"});
	model.addRow(new Object[]{"verbinding maken met server", "led of server aan of uit is"});
	
	int rowIndex = 4;
    int vColIndex = 1;
    
    Object o = tabel.getValueAt(rowIndex, vColIndex);
    System.out.println(o);
    
  

        setBackground(Color.blue);
        
    
        tabel.setRowHeight(75);
       
        tabel.setBackground(Color.yellow);
        tabel.setPreferredScrollableViewportSize(new Dimension(500, 450));
        tabel.setFillsViewportHeight(true);
        add( tabel );   
        scrollPane = new JScrollPane(tabel);
        add(scrollPane);
 	
}     
}

JButton knop = new JButton("Knop");
knop.addActionListener(new ActionListener() {

	public void actionPerformed(ActionEvent e) {
		// hier je code...	
	}

});

package javaapplication35;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableModel;

public class Main {

    public static void main(String[] args) {
        final JFrame f = new JFrame();
        f.getContentPane().add(new TabelPanel());
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setLocationByPlatform(true);
        f.pack();
        SwingUtilities.invokeLater(new Runnable() {

            public void run() {
                f.setVisible(true);
            }
        });
    }

    public static class TabelPanel extends JPanel {

        private TabelPanel() {

            Action action1 = new AbstractAction("Knop 1") {
                public void actionPerformed(ActionEvent e) {
                    JOptionPane.showMessageDialog(TabelPanel.this, "knop 1 ingedrukt");
                }
            };
            Action action2 = new AbstractAction("Knop 2") {
                public void actionPerformed(ActionEvent e) {
                    JOptionPane.showMessageDialog(TabelPanel.this, "knop 2 ingedrukt");
                }
            };

            //vul tableModel
            final DefaultTableModel tableModel = new DefaultTableModel();
            tableModel.addColumn("kolom 1");
            tableModel.addColumn("kolom 2");
            tableModel.addRow(new Object[]{"tekst 1", action1});
            tableModel.addRow(new Object[]{"tekst 2", action1});
            tableModel.addRow(new Object[]{action2,"nog een tekst"});

            //gebruik de speciale ActiontTable ipv JTable
            final JTable table = new ActionTable(tableModel);
            final JScrollPane scrollPane = new JScrollPane(table);

            this.add(scrollPane, BorderLayout.CENTER);

        }
    }
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package javaapplication35;

import java.awt.Component;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JTable;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableModel;

/**
 *
 * @author pdekker
 */
public class ActionTable extends JTable {

    private ActionCellRenderer actionRenderer = new ActionCellRenderer();

    public ActionTable(TableModel dm) {
        super(dm);
        addMouseListener(new ActionMouseListener());
    }

    @Override
    public TableCellRenderer getCellRenderer(int row, int column) {
        return isCellButton(row, column) ? actionRenderer : super.getCellRenderer(row, column);
    }

    @Override
    public boolean isCellEditable(int row, int column) {
        return !isCellButton(row, column);  //Cellen met button moeten altijd non-editable zijn.
    }

    private boolean isCellButton(int row, int column) {
        Object obj = getModel().getValueAt(row, column);
        return (obj instanceof Action);
    }

    private void cellButtonEvent(MouseEvent mouseEvent) {
        Point p = new Point(mouseEvent.getX(), mouseEvent.getY());
        int row = rowAtPoint(p);
        int col = columnAtPoint(p);
        if (row < 0 || col < 0 || row >= getRowCount() || col > getColumnCount()) {
            return;
        }
        if (isCellButton(row, col)) {
            TableCellRenderer renderer = getCellRenderer(row, col);
            if (renderer instanceof JButton) {
                JButton knop = (JButton) renderer;
                knop.doClick();
            }
        }
    }

    private class ActionCellRenderer extends JButton implements TableCellRenderer {

        @Override
        public Component getTableCellRendererComponent(JTable table, Object value,
                boolean isSelected, boolean hasFocus,
                int row, int column) {

            this.setAction((Action) value);
            return this;
        }
    }

    private class ActionMouseListener extends MouseAdapter {

        @Override
        public void mouseClicked(MouseEvent e) {
            ActionTable.this.cellButtonEvent(e);
        }
    }
}