Q:

Finding closest integer from an array which is rounded up

I'm not good at english so title can be confusing. 
What i'm trying to do:
I have a int array 10, 20, 30 and I want to take numbers from it based on number variable
if int number = 10;
I want the result from the "method" to be 20
if int number = 21;
i want the result to be 30
I don't know how to explain this properly, but I hope it's understandable.

What is this for? I have a player inventory which can has different sizes 9, 18, 27, 36, 45, 54 and I have a item contents which is for example 5. So I want to have inventory size 9. If the item content size was 19, inventory size should be 27, not 18. And that's my problem.

I tried a lot of different iterations, calculations but every attempt was very unsuccesful. 
I had this method to get a closest value from an array, but i don't know how to change it to round up.
public int getClosestInteger(int value, int[] numbers) {
        int distance = Math.abs(numbers[0] - value);
        int id = 0;
        for (int i = 1; i < numbers.length; i++){
            int dist = Math.abs(numbers[i] - value);

            if(dist < distance){
                id = i; distance = dist;
            }
        }
        return numbers[id];
    }

How I can do that?

A:

If I understand your question correctly, this should work:
public int getClosestInteger(int value, int[] numbers) {
    for (int i = 0; i < numbers.length; i++){
        if(value < numbers[i]){
            return numbers[i];
        }
    }
}

