Method makes nums[i] *=1.1

/* Напишите метод, который будет увеличивать заданный элемент массива на 10% */

class numsum {

    private double nums[];

    numsum (int size) {
        nums = new double[size];
        double k = 1.0;
        for (int i=0; i<nums.length; i++) {
            nums[i] = k;
            k += 1.0;
        }
    }

    void show () {
        for (int j=0; j<nums.length; j++)
            System.out.print(nums[j] + "   ");
            System.out.println();
    }

    void change (int p) {
        try {
            nums[p] *= 1.1;
        } catch (ArrayIndexOutOfBoundsException e) {
            System.out.println("[change-index is out of array size]");
        }
    }
}
//comment 1 string above+below - would be 1 class instead of 2
class test {
    public static void main(String args[]) {
        numsum ob1 = new numsum(10);
        ob1.show();
        ob1.change(5);
        ob1.show();
        numsum ob2 = new numsum(5);
        ob2.show();
        ob2.change(5); //would lead to exception
        ob2.change(2);
        ob2.show();
    }
}