Mon, 17 Nov 2014 12:40:43 -0800
Added tag jdk8u31-b09 for changeset 26c46688ce4a
1 /*
2 * Copyright (c) 2005, 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 */
24 package evalexpr;
26 import java.util.Map;
28 /**
29 * A class loader which loads classes from byte arrays.
30 *
31 * <p><b>This is NOT part of any supported API.
32 * If you write code that depends on this, you do so at your own
33 * risk. This code and its internal interfaces are subject to change
34 * or deletion without notice.</b></p>
35 * @author Peter von der Ahé
36 */
37 public class ByteArrayClassLoader extends ClassLoader {
38 /**
39 * Maps binary class names to class files stored as byte arrays.
40 */
41 private Map<String, byte[]> classes;
43 /**
44 * Creates a new instance of ByteArrayClassLoader
45 * @param classes a map from binary class names to class files stored as byte arrays
46 */
47 public ByteArrayClassLoader(Map<String, byte[]> classes) {
48 this.classes = classes;
49 }
51 @Override
52 public Class<?> loadClass(String name) throws ClassNotFoundException {
53 try {
54 return super.loadClass(name);
55 } catch (ClassNotFoundException e) {
56 byte[] classData = classes.get(name);
57 return defineClass(name, classData, 0, classData.length);
58 }
59 }
60 }