In JavaFX. Must be in JavaFX

I need to create a nested for loop that will create 6 rows and 6 columns of circles with a radius of 40 inside of a pane for a GUI.

should look like the right side of this image with all of the circles

This is the code that I have to far but is not working.

//instance variables

private Circle circle; private Circle[][] circleArray;

//Instantiate the two dimensional circleArray that contains //6 columns and 6 rows of circles (36 in total) for(int i = 0; i

Compiling error is happening here

//Use nested loop to instantiate the 6 columns by 6 rows of //Circle objects, add them inside the circleArrary for(int i = 0; i Color Circle Grids X PrimaryColor Black BackgroundColor White Stroke Width 1 X