Hi,  thanks for reading...

I'm having trouble finding where some of my code is going wrong.

The code is uploaded from the IDE just fine but when executed via a command button:

apex:commandButton action="{!shop}" value="Buy"

 The code leads to a "is down for maintenance ".

When I was an undergrad writing code; I used to be able to write to stdout... to see how far my code was going before it went awry...

Is there a way to do this in Apex for visualforce pages?

Thanks,

Eric