Count frequency of numbers in a phone number using ArrayList

I'm trying to write a program that will count the frequency of numbers in a phone number using ArrayList. The phone number must be input as a String. I think I have it right, but the counts are coming out messed up. Attached is my code:

import java.util.ArrayList;
import java.util.Scanner;


public class CharacterFrequency {
	
	public static void arrayDigits(String number){
		int size = number.length();
		ArrayList<Integer> result = new ArrayList<Integer>(size);
		for (int i = 0; i < number.length(); i++){
			int element = number.charAt(i) - '0';
			result.add(element);
		}
	countDigits(result);
	}
	
	public static void countDigits(ArrayList<Integer> array){
		int size = array.size();
		for (int i = 0; i < size; i++){
			int position = i;
			int count = 0;
			for (int j = 0; j < size; j++){
				int element = array.get(j);
				if (position == element){
					count++;
					array.set(j, count);
				}
			}
			System.out.println("The number of " + i + " is " + array.get(i));
		}
	}
	
	public static void main(String[] args) {
		
		Scanner keyboard = new Scanner(System.in);
		System.out.println("Please enter your phone number, area code first");
		String phoneNumber = keyboard.next();
		arrayDigits(phoneNumber);

	}

}