ImageIcons in a JLabel get their top-most row of pixels cut off

Question

Hello. I've added a "Loading..." screen to my application that basically consists of a JWindow with a background image. However, I've noticed something odd when adding an ImageIcon to a JLabel. It seems that any image I add gets its top row of pixels cut off. The small program below illustrates this.
import javax.swing.*;
import java.awt.*;
public class JLabelTest {
   static final String WINDOW_IMAGE = "my_image.jpg";
    * Create and display the loading screen
   private static void displayLoadingScreen()
      SwingUtilities.invokeLater(new Runnable() {
         public void run() {
            JWindow winLoadingScreen = new JWindow();
            ImageIcon loadingImg = new ImageIcon(WINDOW_IMAGE);
            JLabel lblImage = new JLabel(loadingImg);
            winLoadingScreen.getContentPane().add(lblImage);
            winLoadingScreen.pack();
            System.out.println("label dimensions:      " + lblImage.getSize().width + " x " + lblImage.getSize().height);
            System.out.println("image icon dimensions: " + loadingImg.getIconWidth() + " x " + loadingImg.getIconHeight());
            winLoadingScreen.setLocation(100, 100);
            winLoadingScreen.setVisible(true);
    * Entry point
    * @param args
   public static void main(String[] args)
      SwingUtilities.invokeLater(new Runnable() {
         public void run()
            displayLoadingScreen();
}(Obviously, replace my_image.jpg with something else if you'd like to run the code on your own machine.)
When I run the program with, say, an 800 x 600 resolution image, the output I get is:
label dimensions:      800 x 599
image icon dimensions: 800 x 600As you can see, the image gets "shortened" by one pixel when added to the JLabel. If you look at the image that is displayed, you can see that it's the top row that gets cut off. I've tried changing the layout of the JWindow that the JLabel is being added to, but that didn't change anything. I've tried using a number of different images in varying formats, and the same thing happens to all of them.
Any ideas? Thanks in advance.

Answer 1

Have you tried to set label's preferredSize manually?
What happens when you add empty border t the label with some insets?
regards,
Stas