public void setCenter(MyPoint center) { this.center = center; }
public MyCircle(int x, int y, int radius) { center = new MyPoint(x, y); this.radius = radius; }
public MyCircle(MyPoint center, int radius) { this.center = center; this.radius = radius; }
public MyCircle() { center = new MyPoint(0, 0); radius = 1; }