Valid UPC Checker

checkUPCDigits.java

import java.util.Scanner;

public class checkUPCDigits {	

	public static int[] splitNumberIntoArray(long NumberToBeSplit){
		int i = 0;
		int[] Array = new int[12];
		int lastDigit;		
		
		while (NumberToBeSplit > 0){
			lastDigit = (int) (NumberToBeSplit % 10);
			NumberToBeSplit = NumberToBeSplit / 10;			
			Array[i] = lastDigit;			
			i++;
		}	
		
		return Array; 
	}
	
	public static int sumOfOddArrayIndexes(int[] value){		
		int sum=0;		
		for(int i=1;i<value.length;i++){
			if(i%2!=0){
				sum = sum+value[i];
			}
		}		
		return sum;
	}
	
	public static int sumOfEvenArrayIndexes(int[] value){		
		int sum=0;
		
		for(int i=1;i<value.length;i++){
			if(i%2==0){
				sum = sum+value[i];
			}
		}		
		return sum;
	}	
	
	public static boolean CalculatedCheckDigitMatchesActual(long a){
		int[] upcArray = splitNumberIntoArray(a);
		int actualCheckDigit = upcArray[0];		
		int calculatedCheckDigit = ( (sumOfOddArrayIndexes(upcArray) * 3) + sumOfEvenArrayIndexes(upcArray) ) % 10;
		if(calculatedCheckDigit != 0){
			calculatedCheckDigit = 10 - calculatedCheckDigit;
		}		
		
		if(calculatedCheckDigit == actualCheckDigit){
			return true;
		}else{
			return false;
		}		
	}
	
	public static boolean isValidUPC(long a){
		if(CalculatedCheckDigitMatchesActual(a)){
			return true;
		}else{		
			return false;
		}
	}
	
	public static void main(String[] args) {  
		Scanner userInput = new Scanner(System.in);
		System.out.println("Enter UPC: ");
		long inputUPC = userInput.nextLong();				
		
		if(isValidUPC(inputUPC)){
			System.out.println("UPC "+inputUPC+ " is valid.");
		}else{
			System.out.println("UPC "+inputUPC+ " is not valid.");
		}
	}
}