Selecting an array value with a variable

[Invalid]

Hey,
Im fairly new to Java, and im doing a course in it at the moment. I have been set some homework to do, but ive got a little stuck ...what i have to do is create a program that randomly generates numbers between 1 and 10, and then i have made an array which has 10 values, and say number 1 comes up in the random number generation, i want array [1] to have the number of times 1 appears in it. Ive came up with the following, but i keep getting errors ...i think there is a problem with defineing the variable i as a long, then the array as an integer...

int[] ar = {0,0,0,0,0,0,0,0,0,0};

int a = 0;

while (a<10)
		{
a++;

long i = Math.round(Math.random()*10);

ar[i] = i;
                }


	System.out.println(ar);

with that code i get these errors:

found   : long
required: int
ar[i] = i;
   ^
C:\Website Projects\Java Work\test 1\Document.java:14: possible loss of precision
found   : long
required: int
ar[i] = i;

if anyone could help me get this working i would be most greatful

Thanks for your time,

-Ross

[ArchAngel added CODE tags]

[ArchAngel]

Declare i as an int and cast the result of Math.random() to an int.