How can I "hide" borders for buttons ?

Question

Hello!
I have a toolbar with several buttons on it. If I run my application, these buttons appears initially with a border around.
I made a custom button, class which implements MouseListener (extends JButton of course) and for each event like mousePressed(...), mouseEntered(...) I set a specific border for my button.
If I move the mouse cursor over the button the border will not be visible because I use (setBorder(...) in my class) an EmptyBorder(...). I want to happen this when my application starts.
With respect,
Cristian

Answer 1

I changed a little your code to figure what's wrong; here it is modified code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
public class Test extends JFrame {
     public Test () {
          getContentPane ().setLayout (new FlowLayout ());
          ImageIcon icon = new ImageIcon("images/"+"save.gif");
          Action actionNew = new AbstractAction("save", icon) {
               public void actionPerformed(ActionEvent e) {
          JToolBar toolBar = new JToolBar();
          CustomButton save = new CustomButton(actionNew, "save");
          toolBar.add(save);
          getContentPane ().add (toolBar);
          setDefaultCloseOperation (EXIT_ON_CLOSE);
          setTitle ("Button without border");
          pack ();
          setLocationRelativeTo (null);
          show ();
     public class CustomButton extends JButton {
          private Border emptyBorder;
          private Border lineBorder;
          public CustomButton (Action act,String text) {
               super((Icon)act.getValue(Action.SMALL_ICON));
               //super (text);
               setFocusPainted (false);
               emptyBorder = BorderFactory.createEmptyBorder (1, 1, 1, 1);
               lineBorder = BorderFactory.createLineBorder (Color.BLACK);
               setBorder (emptyBorder);
               setToolTipText(text);
               addMouseListener (new MouseAdapter () {
                    public void mouseEntered (MouseEvent event) {
                         setBorder (lineBorder);
                    public void mouseExited (MouseEvent event) {
                         setBorder (emptyBorder);
          public static void main (String[] parameters) {
               new Test ();
     }And I realized that if I put my buttons on a toolbar they will be bordered and I don't now if I need to customize the toollbar too in order not show borders arround.
To run this code you should have an image called save.gif placed in images directory.
Thanks Levi, I will search further !
Kind regards,
Cristian