Get double value in java

private void CountMatching(Object[] array, Object[] array1) {
        int count = 0;
        double total;
        for (int a = 0; a < array.length; a++) {
            for (int b = 0; b < array1.length; b++) {
                if (array[a] == array1[b]) {
                    count++;
                }
            }
        }
        System.out.println(count);
        total=(count/9)*(30.0/100);
        System.out.println(total);
    }