Java tutorial
/* * Copyright 2007 Yusuke Yamamoto * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package facebook4j; import facebook4j.internal.org.json.JSONObject; /** * A data class representing geo location. * * @author Yusuke Yamamoto - yusuke at mac.com * @author Ryuji Yamashita - roundrop at gmail.com * <ul> * <li>Added {@link GeoLocation#asParameterString() asParameterString()} method</li> * <li>Added {@link GeoLocation#asJSONObject() asJSONObject()} method</li> * <li>Added {@link GeoLocation#asJSONString() asJSONString()} method</li> * </ul> */ public class GeoLocation implements java.io.Serializable { protected double latitude; protected double longitude; private static final long serialVersionUID = -4847567157651889935L; /** * Creates a GeoLocation instance * * @param latitude the latitude * @param longitude the longitude */ public GeoLocation(double latitude, double longitude) { this.latitude = latitude; this.longitude = longitude; } /* For serialization purposes only. */ /* package */ GeoLocation() { } /** * returns the latitude of the geo location * * @return the latitude */ public double getLatitude() { return latitude; } /** * returns the longitude of the geo location * * @return the longitude */ public double getLongitude() { return longitude; } public String asParameterString() { return latitude + "," + longitude; } private JSONObject json = null; public JSONObject asJSONObject() { if (json == null) { json = new JSONObject(this); } return json; } public String asJSONString() { return asJSONObject().toString(); } @Override public boolean equals(Object o) { if (this == o) return true; if (!(o instanceof GeoLocation)) return false; GeoLocation that = (GeoLocation) o; if (Double.compare(that.getLatitude(), latitude) != 0) return false; if (Double.compare(that.getLongitude(), longitude) != 0) return false; return true; } @Override public int hashCode() { int result; long temp; temp = latitude != +0.0d ? Double.doubleToLongBits(latitude) : 0L; result = (int) (temp ^ (temp >>> 32)); temp = longitude != +0.0d ? Double.doubleToLongBits(longitude) : 0L; result = 31 * result + (int) (temp ^ (temp >>> 32)); return result; } @Override public String toString() { return "GeoLocation{" + "latitude=" + latitude + ", longitude=" + longitude + '}'; } }