Hierarchical table column in Java

Question

Is there any Java library that supports hierarchical column?

For example (the first three row are columns) :

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2008                                           |
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January               | February               |
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Week1 | Week2 | Week3 | Week 1 | Week2 | Week3 |
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10    | 20    | 14    | 12     | 15    | 3     |
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Answer 1

May be a JXTree from SwingLab could approach what you are looking for.

Illustration here, from the Swingx project

http://avatar21.superihost.com/images/JXTableJXTreeTable.png