Draw a circle with fan blades inside, Java

I have to display four "fans" or arcs that are outlined by a circle, i have the fanblades/arcs set and looking the way i would like but i cannot figure out how to get them outlined by a circle, any ideas? Thanks in advance.

package chap15;


import java.awt.Graphics;
import javax.swing.JPanel;


public class Fans extends JPanel {


    @Override
    protected void paintComponent(Graphics g) {
    super.paintComponent(g);



    int xCenter = ge开发者_StackOverflowtWidth() / 2;
    int yCenter = getHeight() / 2;
    int radius = (int)(Math.min(getWidth(), getHeight()) * 0.4);

    int x = xCenter - radius;
    int y = yCenter - radius;

    g.fillArc(x, y, 2 * radius, 2 * radius, 0, 30);
    g.fillArc(x, y, 2 * radius, 2 * radius, 90, 30);
    g.fillArc(x, y, 2 * radius, 2 * radius, 180, 30);
    g.fillArc(x, y, 2 * radius, 2 * radius, 270, 30);

}
}

drawArc?