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OK. I'll try again. Your NPE was generated by something on line 108 of your source file.

Now: Find line 108 in that file. Write it down on pencil and paper. Really. Pencil and paper.

Look...

Yes. The applet class definition must be a public class. That's exactly what the error message was trying to tell us. (Did you try it? Did the first error message go away?)


If your error...

When I compile the program from a command line and run appletviewer from a command line, in addition to seeing Start: applet not initialized. at the bottom of the applet window, I get the following...