Here you can find the source of getResourceAsString(String prefix, String resource)
public static String getResourceAsString(String prefix, String resource) throws IOException
//package com.java2s; /*//from ww w. j a v a2 s . com * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can obtain * a copy of the License at https://jersey.dev.java.net/CDDL+GPL.html * or jersey/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at jersey/legal/LICENSE.txt. * Sun designates this particular file as subject to the "Classpath" exception * as provided by Sun in the GPL Version 2 section of the License file that * accompanied this code. If applicable, add the following below the License * Header, with the fields enclosed by brackets [] replaced by your own * identifying information: "Portions Copyrighted [year] * [name of copyright owner]" * * Contributor(s): * * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ import java.io.IOException; import java.io.InputStreamReader; import java.io.Reader; public class Main { public static String getResourceAsString(String prefix, String resource) throws IOException { Reader reader = new InputStreamReader( Thread.currentThread().getContextClassLoader().getResourceAsStream(prefix + resource)); StringBuilder sb = new StringBuilder(); char[] c = new char[1024]; int l; while ((l = reader.read(c)) != -1) { sb.append(c, 0, l); } return sb.toString(); } }