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Please Edit your post and wrap your code with
<YOUR CODE HERE> to get highlighting

I don't know anything about a PlotButton.

Please Edit your post and wrap your code with
<YOUR CODE HERE> to get highlighting


The posted code won't compile because it is missing the import statements.

What will the String: cmd be used for?

What is DArray? Is it a java package you are using? I've never seen any reference to it and can only suggest that you rread the doc that comes with the...

Does it compile? Does it create a String?
What do you want to resultant String to contain?

What packages and classes are you trying to use for your project? Have you done a Google search for packages that will do pie charts?