Thread: How to fix annoying white splash in this simple java code?

The problem is when I run the code below, I see a white splash on my screen for about maybe 100ms which is extremely annoying:

import java.awt.*;
import javax.swing.*;
 
public class MyPanel extends JPanel {
 
    public MyPanel() {
        this.setBackground(Color.black);
        JTextArea jtext = new JTextArea(10, 20);
        jtext.setBackground(Color.black);
        jtext.setForeground(Color.white);
        jtext.setText("some stuff here");
        add(jtext);
        add(new JButton("some button"));
        // TODO: gui elements
    }
 
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JFrame frame = new JFrame("MyPanel");
                frame.getContentPane().add(new MyPanel());
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
                frame.setVisible(true);
            }
        });
    }
}

My entire work setup is in dark theme. Equivilant code written in C++ with Qt does not show any white splashs on the same system. I'm using Ubuntu 12.04 and Intel HD Graphics 3000. Please let me know how this can be fixed. I googled this problem but all I found was: "how to create splash screen in java?" which what I'm trying to avoid.

Originally Posted by andbin

Try to color with black also the content pane:

frame.getContentPane().setBackground(Color.BLACK);

no difference

Originally Posted by KevinWorkman

Hard to help you, as I don't see the white flash on my machine (Windows 7).

Same results on Windows XP, XP Pro, Vista; Ubuntu 10.04 & 12.10

FIXED it!
I'm not sure why this works:
I extended MyPanel to JFrame and put most of the functions there. then in the run() invoked it and set visible to true.
here is the code:

import java.awt.*;
import javax.swing.*;
 
public class MyPanel extends JFrame {
 
    public MyPanel() {
 
    	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    	this.setBackground(Color.black);
        JTextArea jtext = new JTextArea(10, 20);
        jtext.setBackground(Color.black);
        jtext.setForeground(Color.white);
        jtext.setText("some stuff here");
        getContentPane().add(jtext);
 
        // TODO: gui elements
 
        setExtendedState(JFrame.MAXIMIZED_BOTH);
        setSize(350, 250);
        setLocationRelativeTo(null);
    }
 
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
            	MyPanel mypanel = new MyPanel();
            	mypanel.setVisible(true);
            }
        });
    }
}