Testing a main method

[yashvi.c.shah]

Hello all!

I want to test my main method to make sure it is calling all of the right headers but I don't know how. Can someone please explain? I've posted my main code here.

public class BenfordsLaw{

public static void main (String args []) {
double [] BenfordNumbers = generateBenfordNumbers(100, 0.01, 1000);
System.out.println("Generating the Benford sequence with an initial amount of 100 dollars, 0.01 growth per period, and 1000 periods");

double [] randomNumbers = BenfordSupportCode.generateRandomNumbers(1000);
double [] BenfordLeadingDigit = calculateLeadingDigitProportions(BenfordNumbers);
for (int i = 0; i<10; i++) {
System.out.println("For Benford, the digit is " + i + " and the proportion is " + BenfordLeadingDigit[i]);
}
double [] randomLeadingDigit;
randomLeadingDigit = calculateLeadingDigitProportions(randomNumbers);
for (int i = 0; i<10; i++) { //in this case, the i is a counter. separate from variable
System.out.println("Using random generation, the digit is " + i + " and the proportion is " + randomLeadingDigit[i]);
}

double exponentialdifference;
exponentialdifference = calculateDistance(BenfordLeadingDigit, BenfordSupportCode.getBenfordProbabilities());
System.out.println("The distance of the exponential growth group is" + exponentialdifference);
double randomdifference;
randomdifference = calculateDistance(randomLeadingDigit, BenfordSupportCode.getBenfordProbabilities());
System.out.println("The distance of the random growth group is " + randomdifference);
}

[killutch]

what do you mean by headers?

you will probably have to import BenfordSupportCode

also several methods in here arn't defined and use the
[code]
[\code] to display code

[yashvi.c.shah]

Hi Killuch!

I've shared my whole code here. I want to call each method within my code from the main method. My professor creates tests for all the other blocks of code except my main method and I want to make sure I've written it correctly.

public class BenfordsLaw{

	public static void main (String args []) {
		double [] BenfordNumbers = generateBenfordNumbers(100, 0.01, 1000);
	    	System.out.println("Generating the Benford sequence with an initial amount of 100 dollars, 0.01 growth per period, and 1000 periods");
	    	
		double [] randomNumbers = BenfordSupportCode.generateRandomNumbers(1000);
	    	double [] BenfordLeadingDigit = calculateLeadingDigitProportions(BenfordNumbers);
	    		for (int i = 0; i<10; i++) {
	      		System.out.println("For Benford, the digit is " + i + " and the proportion is " + BenfordLeadingDigit(i));
	    					   }
	    	double [] randomLeadingDigit = calculateLeadingDigitProportions(randomNumbers);
	    		for (int i = 0; i<10; i++) {
	      		System.out.println("Using random generation, the digit is " + i + " and the proportion is " + randomLeadingDigit[i]);
	    					   }
	    
		double exponentialdifference = calculateDistance(BenfordLeadingDigit, BenfordSupportCode.getBenfordProbabilities());
	    	System.out.println("The distance of the exponential growth group is" + exponentialdifference);
	    	double randomdifference = calculateDistance(randomLeadingDigit, BenfordSupportCode.getBenfordProbabilities());
	    	System.out.println("The distance of the random growth group is " + randomdifference);
	  					}
	  
	  
	public static double [] generateBenfordNumbers (double initialAmount, double growthRate, int numberPeriods) {
    		double [] amountOfMoney = new double [numberPeriods];
     			for (int i = 0; i<numberPeriods; i++) {
       			double nextNumber = initialAmount * Math.pow(1+growthRate, i);
       			amountOfMoney [i] = nextNumber;
     							      }
     			return amountOfMoney;
   														     }


  	public static int calculateLeadingDigit(int number) {
      		if (number == 0)
        	return 0;
      		double positiveNumber = Math.abs(number);
      		while (positiveNumber>=10) {
        	positiveNumber = positiveNumber/10.0;
      					   }
        	int IntpositiveNumber = (int) positiveNumber;
    		return IntpositiveNumber;
      							    }

  
	public static double [] calculateLeadingDigitProportions (double [] number) {
    		double [] result = new double [10];
    		for (int i = 0; i<number.length; i++) {
     		int leadingDigit = calculateLeadingDigit ((int) number [i]);
      		result[leadingDigit]++;
    						      }
    		for (int i = 0; i<result.length; i++) {
      		result [i] = (result [i]/number.length);
    						      }
    		return result;
  										     }

  
	public static double calculateDistance(double [] distance1, double [] distance2) {
    		double [] array1 = new double [distance1.length];
    		double [] array2 = new double [distance2.length];

    		for (int i = 0; i<distance1.length; i++) {
      		array1[i] = distance1 [i];
       		array2[i]= distance2 [i];
   		 					}

    		double [] differenceOfArray = new double [distance1.length];

    		for (int i = 0; i<distance1.length; i++) {
     		differenceOfArray [i] = Math.pow((array1[i]) - (array2[i]),2);
   							}

      		double euclideanDistance = 0;

      		for (int i = 0; i<distance1.length; i++) {
        	euclideanDistance += (differenceOfArray[i]);
      							}
      		double distance = Math.sqrt(euclideanDistance);
      		return distance;
  											}
		       }

[DarrylBurke]

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