Write a program in java to input a string and convert it into uppercase and print the pair of vowels and number of pair of vowels occurring in the string.

Sample Input:
The goat will eat wheat

Sample Output:
OA
EA
EA
Count of vowel pairs: 3

import java.util.Scanner;

public class KboatVowelPairs
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter the string: ");
        String str = in.nextLine();
        str = str.toUpperCase();
        str += " ";
        String word = "";
        int count = 0;
        int len = str.length();
        
        for (int i = 0; i < str.length() - 1; i++) {
            char ch1 = str.charAt(i);
            char ch2 = str.charAt(i + 1);
            if ((ch1 == 'A' || ch1 == 'E' || ch1 == 'I'|| ch1 == 'O'|| ch1 == 'U') && 
                (ch2 == 'A' || ch2 == 'E' || ch2 == 'I'|| ch2 == 'O'|| ch2 == 'U')) {
                    System.out.println("" + ch1 + ch2);
                    count++;
                }
        }
        
        System.out.println("Count of vowel pairs: " + count);
    }
}