1 /* 2 * Copyright (c) 2009, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 package shared; 26 27 import java.util.HashMap; 28 import java.util.Map; 29 30 /*******************************************************************/ 31 // Class loader which has local class file storage in memory 32 /*******************************************************************/ 33 34 public class ByteArrayClassLoader extends ClassLoader { 35 private Map<String, byte[]> classes; 36 ByteArrayClassLoader()37 public ByteArrayClassLoader() { 38 classes = new HashMap<String, byte[]>(); 39 } 40 ByteArrayClassLoader(Map<String, byte[]> classes)41 public ByteArrayClassLoader(Map<String, byte[]> classes) { 42 this.classes = classes; 43 } 44 appendClass(String name, byte[] classFile)45 public void appendClass(String name, byte[] classFile) { 46 classes.put(name, classFile); 47 } 48 findClass(String name)49 public Class findClass (String name) throws ClassNotFoundException { 50 if (classes.containsKey(name)) { 51 byte[] classData = classes.get(name); 52 return defineClass(name, classData, 0, classData.length); 53 } else { 54 throw new ClassNotFoundException("Can't find requested class: " + name); 55 } 56 } 57 } 58