Resize an ImageIcon

Hiya,

I am doing an application where I have to take a picture from Internet and use it like an ImageIcon inside a JLabel in a GridLayout, this picture can have different sizes and If it is too big the cells from the GridLayout will be too big so I manage to resize the ImageIcon using this code:

private ImageIcon resizeImage( ImageIcon fromStream,
 int widthConstraint, int heightConstraint)
{
 
  int imgWidth = fromStream.getIconWidth();
  int imgHeight = fromStream.getIconHeight();
  ImageIcon adjustedImg;
 
  if ( imgWidth > widthConstraint | imgHeight >
   heightConstraint )
  {
    if ( imgWidth > imgHeight )
    {
      // Create a resizing ratio.
      double ratio = (double) imgWidth / (double)
       widthConstraint;
      int newHeight = (int) ( (double) imgHeight / ratio );
 
      // use Image.getScaledInstance( w, h,
      // constant), where constant is a constant
      // pulled from the Image class indicating how
      // process the image; smooth image, fast
      // processing, etc.
      adjustedImg = new ImageIcon(
       fromStream.getImage().getScaledInstance(
        widthConstraint, newHeight,
        Image.SCALE_SMOOTH )
      );
    }
    else
    {
      // Create a resizing ratio.
      double ratio = (double) imgHeight / (double)
       heightConstraint;
      int newWidth = (int) ( (double) imgWidth / ratio );
      adjustedImg = new ImageIcon(
       fromStream.getImage().getScaledInstance( newWidth,
        heightConstraint, Image.SCALE_SMOOTH )
      );
    }
   
    // return the adjusted ImageIcon object.
    return adjustedImg;
  }
  else
  {
    // Assure the resources from the adjustedImg object
    // are released and then return the original ImageIcon
    // object if the submitted image's width and height
    // already fell within the given constraints.
    adjustedImg = null;
    return fromStream;    
  }
}
**********


The problem is that the when I add the Jlabel in the panel the it uses the same space as it wasn't resized, is like the function doesn't work but checking the values of the imageIcon with getIconHeight() the values are correct, so why when I add the Jlabel in the panel the sized is not changed??
thank you!!