calling a method in java and incrementing an array in a for loop

Hi i am new to programming, my program is a random number generator using the math.random class and i am having issues with my code. I need to Call the randInt method n times in the randTest method, each time incrementing the count of the element counts corresponding to the value returned. Basically each time a random number is generated, the counts element increases.

This is my code so far:

public class RandNumGenerator {

    public static int RandInt(){
        int n = (int) Math.random()*10;
        return n;
        }

    public static void randTest(int n){
        int [] counts = new int [10];

        for(int i=0;i<10;i++){
            RandInt();

            }
            }
    }