Like most things, I find that writing the code for an applet is easiest if you start out with a working applet to modify. Now let's get back to some Java basics. Previously I had recalled how to convert a String to an int. Now I needed to do the same for a double. The tried and true design worked well.

You create a Double object. Pass the String into the constructor of the Double. Then you can assign the value of the Double to a double variable. The conversion works well. Actually I think this is implicitly calling a member of Double that returns a double. Is this what they call boxing? Or maybe it is unboxing.