round a floating-point number to the next integer value in java

Question

how can i round up a floating point number to the next integer value in Java? Suppose

2.1 -->3

3.001 -->4

4.5 -

Answer 1

I had the same issue where I was still getting the smaller int value. It was the division, not the Math.ceil. You have to add a (float) cast to the ints. This is how I fixed it:

int totalNumberOfCachedData = 201;
int DataCountMax = 200;

float ceil =(float) totalNumberOfCachedData / (float)DataCountMax;
int roundInt = (int) Math.ceil(ceil);

This will give me 2 for the value of roundInt.