Here you can find the source of objToDouble(Object obj)
| Parameter | Description |
|---|---|
| obj | an object ( null permitted). |
private static double objToDouble(Object obj)
//package com.java2s; /* =========================================================== * Orson Charts : a 3D chart library for the Java(tm) platform * =========================================================== * /*from w w w . ja v a 2 s .c o m*/ * (C)opyright 2013-2016, by Object Refinery Limited. All rights reserved. * * http://www.object-refinery.com/orsoncharts/index.html * * 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 3 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, see <http://www.gnu.org/licenses/>. * * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. * Other names may be trademarks of their respective owners.] * * If you do not wish to be bound by the terms of the GPL, an alternative * commercial license can be purchased. For details, please see visit the * Orson Charts home page: * * http://www.object-refinery.com/orsoncharts/index.html * */ public class Main { /** * Converts an arbitrary object to a double. * * @param obj an object ({@code null} permitted). * * @return A double primitive (possibly Double.NaN). */ private static double objToDouble(Object obj) { if (obj == null) { return Double.NaN; } if (obj instanceof Number) { return ((Number) obj).doubleValue(); } double result = Double.NaN; try { result = Double.valueOf(obj.toString()); } catch (Exception e) { } return result; } }