Java tutorial
//package com.java2s; /* * Created on 31-Oct-2004 at 20:29:10. * * Copyright (c) 2004-2005 Robert Virkus / Enough Software * * This file is part of J2ME Polish. * * J2ME Polish 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. * * J2ME Polish 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 J2ME Polish; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Commercial licenses are also available, please * refer to the accompanying LICENSE.txt or visit * http://www.j2mepolish.org for details. */ import java.awt.Image; import java.awt.Toolkit; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.net.URL; import javax.imageio.ImageIO; public class Main { /** * Loads an image from within a jar. * * @param fileName the image path. * @return an initialised image-icon or null, when no image could be found. */ public static Image loadIcon(String fileName) { URL url = ClassLoader.getSystemResource(fileName); if (url == null) { System.out.println("unable to locate [" + fileName + "]."); return null; } return Toolkit.getDefaultToolkit().createImage(url); } /** * Loads an image from within a jar or from the file system. * * @param fileName the image path. * @param packageClass a class within the package where the image can be found * @return an initialised image-icon or null, when no image could be found. */ public static Image loadIcon(String fileName, Class packageClass) { try { ClassLoader classLoader = packageClass.getClassLoader(); InputStream is = classLoader.getResourceAsStream(fileName); if (is == null) { File file = new File(fileName); if (file.exists()) { is = new FileInputStream(file); } else { return null; } } return ImageIO.read(is); } catch (IOException e) { System.err.println("Unable to load image [" + fileName + "]"); e.printStackTrace(); return null; } } }