Why does JButton background color change when clicking ?

Question

Hello,
I have defined :
JButton mybutton = new JButton(Icon xxx) ;
with no associated text and I set both foreground and background colors to black, and an empty border.
This is because the background color of the container which contents this button is also black and I want to see only the button icon.
When I click on the icon , the button background color becomes grey. How can I change this to make it remains black ?
Thanks a lot.
Gege

Answer 1

Well, the color changes because that is how the look and feel is defined,
presumably to give better feedback to the user that she has clicked the
button.
If you don't want this, you could try using a different L&F which doesn't do this.
Alternatively, If you've only got the one button, you could just do
    UIManager.put( "Button.select", Color.BLACK );If you have multiple buttons, and you want the other buttons to behave
normally, you can extend the one button and have it change the color
while it is pressed, e.g.,
import java.awt.*;
import java.io.IOException;
import java.net.URL;
import javax.swing.*;
public class ButtonSelect extends JFrame {
     public ButtonSelect() throws IOException {
          super();
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          JPanel panel = new JPanel();
          panel.add( new JButton( "Normal" ) );
          Image img = Toolkit.getDefaultToolkit().getImage( new URL("http://www.google.com/intl/en/images/logo.gif" ) );
          ImageIcon ii = new ImageIcon( img );
          JButton b = new JButton( ii ) {
               static final private String KEY = "Button.select";
               public void paint( Graphics g ) {
                    Color save = null;
                    if ( getModel().isArmed() && getModel().isPressed() ) {
                         save = UIManager.getColor( KEY );
                         UIManager.put( KEY, Color.WHITE );
                    super.paint( g );
                    if ( save != null )
                         UIManager.put( KEY, save );
          b.setForeground( Color.WHITE );
          b.setBackground( Color.WHITE );
          b.setFocusPainted( false );
          panel.add( b );
          getContentPane().add( panel );
          pack();
          setVisible( true );
     public static void main( String[] a ) throws IOException {
          new ButtonSelect();
}