I want create Object in array java : Shape[] sa = new Shape[10];
		
		for(int i = 0; i < sa.length; i=i+2) {
		sa[i] = new Circle();
		sa[i].setRadius(2);
		}
so i wanted to set some part of the class "shape" to Class  "Circle" but it kept giving me errors[enter image description here][1]


  [1]: https://i.stack.imgur.com/qayot.png