Help error with cookie

@WebServlet("/welcome")
public class WelcomServlet extends HttpServlet {

private static final long serialVersionUID = 1L;


protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	Cookie myCookie=null;
	boolean found=false;
	int length=0;
	PrintWriter out=response.getWriter();
	Cookie ck[]=request.getCookies();
	if(ck==null)
		length=-1;
	else
		length=ck.length;
	for(int i=0;i<length;i++)
	{
		if(ck[i].getName().equals("logincount"));
		{
			found=true;
			myCookie=ck[i];
		}
	}
	if(found)
	{
		int tmp=Integer.parseInt(myCookie.getValue());
		tmp++;
		if(tmp==5)
		{
			out.println("gift for you");
			out.println("Number of times you have logged in: "+String.valueOf(tmp));
			myCookie.setMaxAge(2000);
			response.addCookie(myCookie);
			found=false;
		}
	}
	else
	{
		out.println("this is the first time you have logged in");
		myCookie=new Cookie("logincount", "1");
		myCookie.setMaxAge(5000);
		response.addCookie(myCookie);
	}
}


protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	// TODO Auto-generated method stub
	doGet(request, response);
}

}