Move All Of Number 7 To Front Of Array

I'm using Dr.Java and doing a numbershifter lab. I have to create a random array of number from 1-10. Then move all of the 7s to the front of the array. The order of the other numbers is not important as long as all numbers follow the group of Lucky 7s. Files needed Numbershifter.java and numbershifterrunner.java. All data is random.I have done the following:

public class NumberShifter
{
public static int[]makeLucky7Array( int size)
{
int [] newRay = new int[size];
for( int i=0;i<newRay.length; i++)
{
newRay[i] = (int)Math.round(Math.random()*10+1);

[code]....

It's adding to many 7s in the front of the array.