Why are backgrounds to created images black?

Question

Dear all,
In creating a bufferred image (or a volatile image - perhaps this problem exists with all image classes), the background is completely black. Only the painted components (typically small coloured rectangles) appear as they should do, colour wise. I am creating the graphics using a Graphics2D object in the standard way. However, a call to
g2.setBackground(Color.white) etc still results in a background color black, as does
g2.setColor(Color.white), before the call that adds the rectangles
So I thought, I'd first draa one huge white rectangle using something like
g2.setColor(new Color(255,255,255)), then
g2.fill3DRect(0,0,600,900,false) // whatever
and then draw over the rectangles that I need to add. However the resultant background colour is gray rather than white. Whats going on?
Any suggestions?
Cheers
Ben

Answer 1

Here's a demo of using setColor.Works for me.
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
public class ImageBackground {
    public static void main(String[] args) {
        final int W = 200, H = 100;
        BufferedImage bi = new BufferedImage(W, H, BufferedImage.TYPE_INT_RGB);
        Graphics2D g = bi.createGraphics();
        g.setColor(Color.WHITE); //!
        g.fillRect(0,0,W,H);    //!
        g.setColor(Color.BLUE);
        g.setFont(new Font("Lucida Bright", Font.PLAIN, 16));
        g.drawString("Hello, World!", 10, 50);
        g.dispose();
        JLabel label = new JLabel(new ImageIcon(bi));
        final JFrame f = new JFrame("ImageBackground");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(label);
        f.pack();
        SwingUtilities.invokeLater(new Runnable(){
            public void run() {
                f.setLocationRelativeTo(null);
                f.setVisible(true);
}