Platzierung eines JToolBar

ich will einfach per Event Handling eine Toolbar ersetellen

das porblem wenn ich den HTML_toolbar in actionPerformed erstelle lässt sich gar nicht zeigen

ic habe folgend Methoden verwendet
setSize()
setBounds()
setPreferredize()
setLocation()

bei alle Methoden ist immer dasselbe woran könnte es liegen
wie kann man das problem lösen ???

Danke

code
*****
import javax.swing.;
import java.awt.;
import java.awt.event.*;

public class StartEdit extends JFrame implements ActionListener
{
......
private Container contentPane;
public Dimension dim;
private JToolBar HTML_toolBar, JSCRIPT_toolBar;

public StartEdit(String selectedLanguage)
{
super("PowerEdit");
....

contentPane=this.getContentPane();
contentPane.setLayout(null);
Dimension(Toolkit.getDefaultToolkit().getScreenSize());
this.setBounds(0,0,new Double(dim.getWidth()).intValue(),new
Double(dim.getHeight()).intValue());
langCode=new LangCode(getSelectedLanguage());
.....
......

toolBar=new JToolBar();
toolBar.setBorder(BorderFactory.createEtchedBorder());
toolBar.setBorderPainted(true);
contentPane.add(toolBar);

HTML_toolBar = new JToolBar();
JSCRIPT_toolBar = new JToolBar();

}
//------------------------------------------------------------------------------
public void actionPerformed(ActionEvent event)
{
if(event.getSource().equals(mTools_HTML)){
contentPane.remove(JSCRIPT_toolBar);
HTML_toolBar = new JToolBar();
HTML_toolBar.setBorder(BorderFactory.createEtchedBorder());
HTML_toolBar.setBorderPainted(true);
HTML_toolBar.setPreferredSize(new Dimension(new
Double(dim.getWidth()).intValue(),30));
HTML_toolBar.setBackground(Color.red);
contentPane.add(HTML_toolBar);
}
if(event.getSource().equals(mTools_JSCRIPT)){
contentPane.remove(HTML_toolBar);
contentPane.remove(XML_toolBar);
contentPane.remove(CPLUS_toolBar);
contentPane.remove(JAVA_toolBar);
JSCRIPT_toolBar = new JToolBar();
JSCRIPT_toolBar.setBorder(BorderFactory.createEtchedBorder());
JSCRIPT_toolBar.setBorderPainted(true);
JSCRIPT_toolBar.setBounds(0,30,new Double(dim.getWidth()).intValue(),30);
JSCRIPT_toolBar.setVisible(true);
contentPane.add(JSCRIPT_toolBar);
}
}
//------------------------------------------------------------------------------
}

Devil667

// Create a horizontal toolbar
    JToolBar toolbar = new JToolBar();

    // Create a vertical toolbar
    toolbar = new JToolBar(null, JToolBar.VERTICAL);

    // Get current orientation
    int orient = toolbar.getOrientation();

The following code adds various buttons to the toolbar: 
    // Get icon
    ImageIcon icon = new ImageIcon("icon.gif");

    // Create an action with an icon
    Action action = new AbstractAction("Button Label", icon) {
        // This method is called when the button is pressed
        public void actionPerformed(ActionEvent evt) {
            // Perform action
        }
    };

    // Add a button to the toolbar; remove the label and margin before adding
    JButton c1 = new JButton(action);
    c1.setText(null);
    c1.setMargin(new Insets(0, 0, 0, 0));
    toolbar.add(c1);

    // Add a toggle button; remove the label and margin before adding
    JToggleButton c2 = new JToggleButton(action);
    c2.setText(null);
    c2.setMargin(new Insets(0, 0, 0, 0));
    toolbar.add(c2);

    // Add a combobox
    JComboBox c3 = new JComboBox(new String[]{"A", "B", "C"});
    c3.setPrototypeDisplayValue("XXXXXXXX"); // Set a desired width
    c3.setMaximumSize(c3.getMinimumSize());
    toolbar.add(c3);

vielleicht kannst du hier das fehlende rauspicken.

gruss devil667