Here you can find the source of getResourceAsByteArray(Object context, String resourceName)
public static byte[] getResourceAsByteArray(Object context, String resourceName) throws IOException
//package com.java2s; /*/*w w w . j a v a 2s . c om*/ * $Id: $ * * This file is part of the iText (R) project. * Copyright (c) 1998-2014 iText Group NV * Authors: Bruno Lowagie, Paulo Soares, Kevin Day, et al. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License version 3 * as published by the Free Software Foundation with the addition of the * following permission added to Section 15 as permitted in Section 7(a): * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT * OF THIRD PARTY RIGHTS * * 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 Affero General Public License for more details. * You should have received a copy of the GNU Affero General Public License * along with this program; if not, see http://www.gnu.org/licenses or write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA, 02110-1301 USA, or download the license from the following URL: * http://itextpdf.com/terms-of-use/ * * The interactive user interfaces in modified source and object code versions * of this program must display Appropriate Legal Notices, as required under * Section 5 of the GNU Affero General Public License. * * In accordance with Section 7(b) of the GNU Affero General Public License, * a covered work must retain the producer line in every PDF that is created * or manipulated using iText. * * You can be released from the requirements of the license by purchasing * a commercial license. Buying such a license is mandatory as soon as you * develop commercial activities involving the iText software without * disclosing the source code of your own applications. * These activities include: offering paid services to customers as an ASP, * serving PDFs on the fly in a web application, shipping iText with a closed * source product. * * For more information, please contact iText Software Corp. at this * address: sales@itextpdf.com */ import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; public class Main { public static byte[] getResourceAsByteArray(Object context, String resourceName) throws IOException { InputStream inputStream = getResourceAsStream(context, resourceName); final ByteArrayOutputStream fileBytes = new ByteArrayOutputStream(); try { writeInputToOutput(inputStream, fileBytes); } finally { inputStream.close(); } return fileBytes.toByteArray(); } public static InputStream getResourceAsStream(Object context, String resourceName) { Class<?> contextClass; if (context instanceof Class<?>) { contextClass = (Class<?>) context; } else { contextClass = context.getClass(); } String fullResourceName = getFullyQualifiedResourceName( contextClass, resourceName); InputStream is = contextClass.getClassLoader().getResourceAsStream( fullResourceName); if (is == null) throw new IllegalArgumentException( "Unable to find test resource '" + fullResourceName + "'"); return is; } private static void writeInputToOutput(InputStream is, OutputStream os) throws IOException { final byte[] buffer = new byte[8192]; while (true) { final int bytesRead = is.read(buffer); if (bytesRead == -1) { break; } os.write(buffer, 0, bytesRead); } } public static String getFullyQualifiedResourceName(Class<?> context, String resourceName) { return context.getName().replace('.', '/') + "/" + resourceName; } }