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  1. #1
    nat
    nat is offline Member
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    Default Making a pie chart

    Hello,

    I use JTable and JScrollpane in my java application, and I would like for every selected row in the scroll pane, the pie chart to be made for the values in % that the row contain.
    Can anybody help me please, with an example or a web site regarding this?

    Thanks.

  2. #2
    jim829 is offline Senior Member
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    Default Re: Making a pie chart

    You can search the web for Java pie charts. Doing one yourself should not be that hard if you are familiar with graphics and a little trig.
    Just draw a circle using drawOval method of the graphics context. Then simply draw a radius at each cumulative percentage of 2*PI radians around the circumference. The percentages in this case are the ones from your table. This assumes they add up to 100.
    You might also check out the Arc2D class.

    Regards,
    Jim
    Last edited by jim829; 03-09-2014 at 09:43 PM.
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