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JScrollPane problem

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Hi all,
I am having a bit of trouble making a window that will provide scroll capabilities and contain a JPanel.
My code works fine for creating a window to provide scroll capabilities for a JLabel that is too big for the window (Just not for a panel, and I cant figure out why!!!)

Heres what Ive got:

Is it just not possible to do this for a panel?
I would be delighted with any pointers.
Many thanks,

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ScrollPanes need to know the preferredSize of their child/view components. If the child/view component does not have any children then its layout manager, null here, will not have a preferredSize computed to answer the parent containers call for it as part of the layout process. So you have to provide this information for the component so the parent/scrollPane can get it in when it asks for it.
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