/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * JavaWorld Library, Copyright 2011 Bryan Chadwick * * * * FILE: ./image/FromResource.java * * * * This file is part of JavaWorld. * * * * JavaWorld 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. * * * * JavaWorld 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 JavaWorld. If not, see . * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ package image; import java.awt.image.BufferedImage; import java.util.Hashtable; import javax.imageio.ImageIO; /** Represents an image from a JAR resource (an Image file within * the currently executing JAR). In order to avoid package * relative path problems, the absolute path of the image * within the JAR should be used. */ public class FromResource extends FromFile{ /** Create an Image from the given file name within a JAR. */ public FromResource(String f){ try{ if(loaded.containsKey(f)){ this.img = loaded.get(f); }else{ this.img = ImageIO.read(getClass().getResourceAsStream(f)); loaded.put(f, this.img); } this.init(this.img); }catch(java.io.IOException e){ throw new RuntimeException("Error Loading JAR Image resource: \""+f+"\""); }catch(IllegalArgumentException e){ throw new RuntimeException("JAR Image resource: \""+f+"\" Not Found!"); } } /** Store File/Resource Images, to avoid multiple loads, shadows * FromFile.loaded so that resources and files come * from different name-spaces. */ protected static Hashtable loaded = new Hashtable(); }