public static void main String args int arr1 int arr2 int arr3 int int

public static void main(String[] args) {
        int[] arr1 = { 1, 3, 3, 7 };
        int[] arr2 = { 3, 6, 6, 7, 9 };
        int[] arr3 = { 1, 3, 8 };
        int i;
        int j = 0;
        int a = 0;
        int b = 0;
        for (i = 0; i < arr1.length; i++) {
            while (j<arr2.length) {
                if (arr1[i] == arr2[j]){
                    b++;
                    break;
                }
                j++;
                if (j == arr2.length) {
                    j = 0;
                    break;
                }
            }
            while (a < arr3.length) {
                if (arr1[i] == arr3[a]) {
                    b++;
                    break;
                }
                a++;
                if (a == arr3.length) {
                    a = 0;
                    break;
                }
            }
            if (b == 2) {
                System.out.println(arr1[i]);
                break;
            }
            b = 0;
        }
        if (b == 0) System.out.println("Число отсутствует");
    }