Noob question about 'for' and x=x*x

Question

In the case with the code below:
public class Program {
public static void main(String[] args) {
for(int x=2; x<=10; x=x*x) {
System.out.println(x);
}
}
}
May I ask why did it output 2 and 4 instead of 4? Or perhaps did I misunderstood x=x*x as 2*2 (equal 4), then the new x value (4) become 4*4 (equal to 16) which is invalid? Please let me know.

Answer 1

~ swim ~ Thank you very much!