Here you can find the source of getOptionalAttribute(Element elt, String name)
static String getOptionalAttribute(Element elt, String name)
//package com.java2s; /** SceneBeans, a Java API for animated 2D graphics. * /* ww w .j a v a 2s.c o m*/ * Copyright (C) 2000 Nat Pryce and Imperial College * * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, * USA. * */ import org.w3c.dom.*; public class Main { static String getOptionalAttribute(Element elt, String name) { String value = elt.getAttribute(name); if (value.equals("")) { return null; } else { return value; } } }