How do I generate a random integer between min and max in Java?

Question

What method returns a random int between a min and max? Or does no such method exist?

What I\'m looking for is something like this:

NAMEOFMETHOD (mi         


        

Answer 1

This generates a random integer of size psize

public static Integer getRandom(Integer pSize) {

    if(pSize<=0) {
        return null;
    }
    Double min_d = Math.pow(10, pSize.doubleValue()-1D);
    Double max_d = (Math.pow(10, (pSize).doubleValue()))-1D;
    int min = min_d.intValue();
    int max = max_d.intValue();
    return RAND.nextInt(max-min) + min;
}

Answer 2

You can use Random.nextInt(n). This returns a random int in [0,n). Just using max-min+1 in place of n and adding min to the answer will give a value in the desired range.