JLabel.setIcon() doesn't show the icon

[solved] It was a problem with the way the image was read...
Hey,

For some reason setIcon(icon) does not display the icon on the lable.

Basically, I have a class that extends the JLabel class

class x extends JLabel
{
public setNewIcon(Icon icon)
{
this.setIcon(icon);
}
}

I basically have this x class inside a scrollpane inside a panel. I can see that the lable is showing because of the border but I can't see the image.