Problem serving up java gui

I wrote this swing application that I am to run remotely. I can upload 
the code to an established SSH server and then I connect to it with x11 
forwarding with putty and it runs just great.

The problem is that I need to run it on my personal cygwin SSH server. 
I've had Cygwin's ssh daemon (sshd) working for some time now on my 
windows box. I have turned x11 forwarding on and I can test it by 
connecting to the machine remotely and running some X applications like 
xeyes and xclock. They work just fine.

However, when I try running my swing application I get no error messages 
but no window gets displayed.  I used some debug messages to check to 
see that the program is getting past the line of code that executes the 
window display and messages that go to the console appear fine.

I thought that maybe it was a problem because I was using swing, so I 
wrote a simple hello world awt frame program but the same exact thing 
happens.

Anyone have any ideas why simple X applications work fine, but my java 
gui's don't work over x11?