Print Circle Array and total area of the circle

TotalArea.java

public class TotalArea {
  public static void main(String[] args) {
		//Declare circleArray
		Circle3[] circleArray = createCircleArray();
		
		//Print circleArray and total areas of the circles
		printCircleArray(circleArray);
	}

	public static Circle3[] createCircleArray() {
		Circle3[] circleArray = new Circle3[5];
		for (int i = 0; i < circleArray.length; i++) {
			circleArray[i] = new Circle3(Math.random() * 100);
		}
		return circleArray;
	}

	public static void printCircleArray(Circle3[] circleArray) {
		System.out.printf("%-30s%-15s\n", "Radius", "Area");	
		for (int i = 0; i < circleArray.length; i++) {
			System.out.printf("%-30f%-15f\n", circleArray[i].getRadius(), circleArray[i].getArea());
		}
		System.out.println("-----------------------------------------------------");
		// Create and display the result
		System.out.printf("%-30s%-15f\n", "The total area of circles is", sum(circleArray));
	}

	public static double sum(Circle3[] circleArray) {
		// Initialize sum
		double sum = 0;
		// Add areas to sum
		for (int i = 0; i < circleArray.length; i++) {
			sum += circleArray[i].getArea();
		}
		return sum;
	}
}