Issue getting started with graphhopper

gistfile1.java

@Test
  public void test() {
		Date start = new Date();
    //GraphHopper gh = new GraphHopper().forServer(); //<- this works, line below doesn't
		GraphHopper gh = new GraphHopper().forServer().contractionHierarchies(true);
		gh.load("./london.osm");
		Date end = new Date();
		System.out.println("Load Time: " + (end.getTime() - start.getTime()));
		GHRequest request = new GHRequest(51.430896,0.115356,
				51.564266,-0.219727);
		//request.algorithm("dijkstraNative");
		start = new Date();
		GHResponse response = gh.route(request);
		end = new Date();
		System.out.println("Route Time: " + (end.getTime() - start.getTime()));
		System.out.println(response.distance() + " " + response.time());
		PointList points = response.points();
		for (int i = 0; i < points.size(); i++) {
			System.out.println(points.latitude(i) + " : " + points.longitude(i));
		}
	}