Can't get past the infinite while loop using hasnext()

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Java

Hi,
The program I wrote counts the # of upper and lowercase letters in a string user inputs. I know that hasNext() does not advance past the input, but I have input.next() to advance. Still there is an infinite loop.

What I have tried:

public class CountLetters {
    public static void main(String[] arg) {
        int[] lower = new int[26];
        int[] upper = new int[26];

        for(int i = 0; i < 26; i++)
            lower[i] = upper[i] = 0;
        Scanner input = new Scanner(System.in);
        System.out.print("Enter the string: ");

        while(input.hasNext()) {
            String temp = input.next();
            for (int i = 0; i < temp.length(); i++) {
                char c = temp.charAt(i);
                if (Character.isUpperCase(c))
                    upper[(int) c - 65]++;
                if (Character.isLowerCase(c))
                    lower[(int) c - 97]++;
            }
            input.next();
        }
        System.out.print("a is " + lower[0]);
        System.out.print("A is " + upper[0]);
    }
}