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+//*****************************************************************************%0A//    Filename: Experiment.java%0A//%0A//      Author: David C. Drake (http://davidcdrake.com)%0A//%0A// Description: Contains an Experiment class for...experimenting...with stuff.%0A//*****************************************************************************%0A%0Apublic class Experiment%0A%7B%0A  public static void main(String%5B%5D args)%0A  %7B%0A    int r = 0,%0A        s = 0,%0A        w = 12,%0A        sum = 0;%0A%0A    for (r = 1; r %3C= w; r++)%0A    %7B%0A      for (s = r; s %3C= w; s++)%0A      %7B%0A        sum = sum + s;%0A      %7D%0A    %7D%0A    System.out.print(%22Sum = %22 + sum);%0A  %7D%0A%7D%0A

Add Experiment.java