[Bluefox815]

Okay, first of all, I would probably advise you line up your tabs logically to make your code easier to read. As for your error, I noticed that your StartSymbolic lines were commented, but I'm guessing you did that so the program would compile for the temporary, even though they should work anyways.

I noticed you used the 'int' declaration inside of for statements. This is bad because you are recreating the variables over and over and can cause error, so you want to initialize everything outside of any for, while, if, try, catch, or any other block statement.

Code:

package RSAalgorithm;

public class SecurityAlgorithm {

  public static final char[] StartSymbolic = {'A','B','C','D','E','F','G','H','I','J',
                                                         'K','L','M','N','O','P','Q','R','S','T',
                                                         'U','V','W','X','Y','Z'};

  public static final int[] numeric = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
                                              16,17,18,19,20,21,22,23,24,25,26};

  private static final String separator = "*******************************************";

  public static void main(String[] args) {
    long P3 = 0;
    long P3mod33 = 0;
    long C7 = 0;
    long C7mod33 = 0;
    int temp = 0;
        
    for(int counter = 0; counter < numeric.length; counter++){
      for(int i = 0; i < StartSymbolic.length; i++)  {
        temp = numeric[counter];
        P3 = (long) (temp * temp * temp);
        P3mod33 = P3 % 33;
        C7 = (long) (P3mod33*P3mod33*P3mod33*P3mod33*P3mod33*P3mod33*P3mod33);
        tp = numeric[counter];
        C7mod33 = C7 % 33;
      }
          
      System.out.println(separator);
      // System.out.println(StartSymbolic[i]);
      System.out.println("Numeric: " + numeric[counter]); 
      System.out.println("P3: " +P3); 
      System.out.println("P3mod33: " + P3mod33); 
      System.out.println("C7: " +C7);
      System.out.println("C7mod33: " + C7mod33);
      // System.out.println(StartSymbolic[i]); // THESE are the commented lines, remove the double slash before System.out.println and it should work
      System.out.println(separator);
    }
  }
}

I tabbed your lines more like what the Java conventions would suggest, I don't understand your random spacing, no offense. Personally, I don't tab my lines, they are all aligned to the left. And again, I added your temp and tp declarations to the end of your long declarations, and before your for statements. See if the above code works, also, if what you wanted was the letter to show up, uncomment one of the commented lines in the section where you print output.