Re: Layout problem

I've got a layout problem I'm trying to solve and I was hoping somebody
out there might have an answer on how to do this. I've got each piece
working but I need to lay them out like this:

AAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBB
A AB B
A AB B
AAAAAAAAAAB B CCCCC
          B B C C
          BBBBBBBBBBBBBBBBBBBBBBBBB C C
        DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDC C
        D DC C
        D DC C
        D DCCCCC
        D D
        D D
        D D
        D D
        D D
        DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
                                  

The constraints are that Box D should be centered horizontally on the
containing JFrame, Box C needs to be aligned to a specific vertical
position relative to D. And that box A should extend from the left of the
JFrame to Box B. Box B should also be centered horizontally on the
JFrame.

I'm tempted to use an absolute layout for this, but it seems like there
should be a way to tell a layout manager what the constraints are and
just have it laid out correctly. Is there some third party layout
manager for cases like this? Is there some way to do this kind of thing
with one of the standard layout managers?

I've never written a layout manager before. Would it be relatively easy
to implement my own layout manager to handle this?

Thanks,