Give the parent frame an icon, e.g.
<http://www.physci.org/jvmclean.jsp?pt=download>

The Dialog will inheret that icon, instead
of the default.

By heavyweight, you mean AWT?  No matter, the answer is the same for
Swing, AFAIK.  You can't set the icon on a dialog unless you decorate it
yourself (in Swing -- don't know about AWT equivalents).  In order to
have an input to the icon it uses, you need to set the icon on its
owning Frame/JFrame.  In Swing, there's a complaint about the dialog not
showing its icon if it's not resizable (or maybe if it is -- I forget
just at the moment).  But it otherwise inherits the frame icon specified
in the owning JFrame specified when it was created.

= Steve =

Hi,

A Dialog shows the same system menu icon as its parent Frame.
Hence,  to change the dialog's icon you have to change the frame's icon.
I think the easiest way to achieve this, is with the help of an
ImageIcon and a resource file packaged in your jar.
For example:

ImageIcon icon = new ImageIcon(yourFrame.getClass().getResource("yourIcon.gif"));
yourFrame.setIconImage(icon.getImage());

Thomas

______________________________________
Thomas<dot>Fritsch<squiggle>ops<dot>de

As others have said, use
 yourFrame.setIconImage(image);
However, be sure you do this *before* the Frame is made visible. This
will work for a JFrame as well as a Frame, but not for a JInternalFrame.

For a JInternalFrame, you have to use:
 yourJInternalFrame.setFrameIcon( imageIcon );
and it must be done *after* the JInternalFrame is made visible.