Two panel in a split pane - one gets obscured

My application uses a vertical splitframe with 2 Jpanel objects. The top panel has a grid bag layout. The bottom panel has a boxframe layout. The application displays a list with an enter field and several buttons in the top panel. The bottom panel has a text area, text field and a single button. The top panel is for displaying and editing a list . I load a list from a file and it displays just fine. The bottom panel is for entering commands and displaying results. When I use the bottom panel the top panel suddenly becomes partially obscured because it is too big for the frame. It now has scrollbars, which it did not have when first instantiated. How can I force the frame to grow with the top panel or keep the top panel from getting bigger when the scroll bars are instantiated? Or is there a better solution?

It turns out. My problem had nothing to do with size. It had to do with needing a scroll pane for my bottom panel. I mistakenly did not add it. What I thought was the top panel 'growing' was actually my bottom panel pushing the top pane out. I created the scroll pane but did not add it to the JPanel, I added the JTextArea alone to the JPanel by mistake. oops.
Thanks for your time.

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Two panel in a split pane - one gets obscured

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