Question

Novice programmer here. trying to learn static methods and recursion. No idea why I keep getting “.class expected” error whenever i try to call “drawCircle()”. My code is below. Help plz? Thanks!

public class Drawliin
{
    public static void drawCircle(int numberOfTimes, double radius, double center[])
    {
        int rep = 1;
        if (rep == 1)
        {
            StdDraw.circle(center[0], center[1], radius);
            rep++;
        }
        else if (rep <= numberOfTimes)
            {
            StdDraw.circle(center[0 + radius], center[1], radius);
            StdDraw.circle(center[0 - radius], center[1], radius);
            StdDraw.circle(center[0], center[1 + radius], radius);
            StdDraw.circle(center[0], center[1 - radius], radius);
            rep++;
            drawCircle(numberOfTimes, radius, center[]);
            }
        }

    public static void main(String[] args)
    {
        int N = Integer.parseInt(args[0]);
        double r = Double.parseDouble(args[1]);
        StdDraw.setXscale(-10, 10);
        StdDraw.setYscale(-10, 10);
        double c[] = new double[2];
        drawCircle(N, r, c[]);
    }
}

Answer 1

It should be:

drawCircle(N, r, c);

You just pass c. You don’t need to indicate it’s an array again.