Java tutorial
/* * @(#) WayPoint.java * * This code is part of the JNavigator project. * Copyright (c) 2012 Clemens Krainer * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package at.uni_salzburg.cs.ckgroup.cscpp.mapper.course; import java.util.Locale; import org.json.simple.JSONAware; import org.json.simple.JSONObject; import at.uni_salzburg.cs.ckgroup.course.PolarCoordinate; import at.uni_salzburg.cs.ckgroup.cpcc.mapper.api.IWayPoint; public class WayPoint implements IWayPoint, JSONAware { private PolarCoordinate point; private double precision; private double velocity; public WayPoint(JSONObject obj) { double longitude = ((Double) obj.get("longitude")).doubleValue(); double latitude = ((Double) obj.get("latitude")).doubleValue(); double altitude = ((Double) obj.get("altitude")).doubleValue(); point = new PolarCoordinate(latitude, longitude, altitude); precision = (Double) obj.get("precision"); velocity = (Double) obj.get("velocity"); } public PolarCoordinate getPoint() { return point; } public double getPrecision() { return precision; } public double getVelocity() { return velocity; } @SuppressWarnings("unchecked") @Override public String toJSONString() { JSONObject obj = new JSONObject(); obj.put("latitude", Double.valueOf(point.getLatitude())); obj.put("longitude", Double.valueOf(point.getLongitude())); obj.put("altitude", Double.valueOf(point.getAltitude())); obj.put("precision", Double.valueOf(precision)); obj.put("velocity", Double.valueOf(velocity)); return obj.toString(); } @Override public String toString() { return String.format(Locale.US, "(%.8f, %.8f, %.3f) precision %.0f velocity %.1f", point.getLatitude(), point.getLongitude(), point.getAltitude(), precision, velocity); } }