Here you can find the source of castLong(Object val)
private static long castLong(Object val)
//package com.java2s; /**//from www . j a v a 2s. co m * Copyright 2012-2015 Rafal Lewczuk <rafal.lewczuk@jitlogic.com> * * ZORKA 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. * * ZORKA 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 * ZORKA. If not, see <http://www.gnu.org/licenses/>. */ public class Main { private static long castLong(Object val) { return (val instanceof String) ? Long.parseLong(val.toString() .trim()) : ((Number) val).longValue(); } }