Java fomating to get last count

My main objective is to make Java read a string and from it, express how many times this one character occurs. I am having issues formating this piece of code so that the output would be like this:

Entered word: papaya
Letter A: 3

Right now what I get is this:

Entered word: papaya
Letter A: 1
Letter A: 2
Letter A: 3

This is my code. It uses scanner to ask for input from the user.

int aCount = 0;
Scanner scan = new Scanner(System.in);
      System.out.println("Enter a string: ");
      String string = scan.nextLine();

      string = string.toLowerCase();

      System.out.println("Entered word: " +string);

      for (int i=0; i < string.length();i++)
      {
         if(string.charAt(i)== 'a')
         {
            aCount++;
            if(aCount > 0)
               System.out.println("Letter A: " + aCount);
         }