How to generate a random integer using math.random class

I am having trouble with the RandInt() method as it will not return a random integer. The result must be an int ranged 0-9 and must use the math.random class. This is my code below:

public class RandNumGenerator {
    public static int RandInt() {
        int n = (int) Math.random() * 10;
        return n;
    }
    public static void main(String[] args) {
        RandInt();
    }
}