Generation of graphs in excel

Hi,
How do i achieve the following:
I need to draw graphs at runtime in excel using Java. Ealier without this functionality the application used JXL. It seems that jxl does not have the functionality of drawing graphs.
I wish to know a way through which graphs can be drawn on the fly on the basis of data available at hand.
Thanks in advance.

Also , i need to insert rows into excel sheet when requested by the user and for this rows some other query would have to be written,
in short when the layout changes w/o going into excel can we control it ?(the new cells bounding to new query etc ??)
thanx again

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Generation of graphs in excel

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