61 lines
2.1 KiB
Java
61 lines
2.1 KiB
Java
/*
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* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package evalexpr;
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import java.util.Map;
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/**
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* A class loader which loads classes from byte arrays.
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*
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* <p><b>This is NOT part of any supported API.
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* If you write code that depends on this, you do so at your own
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* risk. This code and its internal interfaces are subject to change
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* or deletion without notice.</b></p>
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* @author Peter von der Ahé
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*/
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public class ByteArrayClassLoader extends ClassLoader {
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/**
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* Maps binary class names to class files stored as byte arrays.
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*/
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private Map<String, byte[]> classes;
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/**
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* Creates a new instance of ByteArrayClassLoader
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* @param classes a map from binary class names to class files stored as byte arrays
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*/
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public ByteArrayClassLoader(Map<String, byte[]> classes) {
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this.classes = classes;
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}
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@Override
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public Class<?> loadClass(String name) throws ClassNotFoundException {
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try {
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return super.loadClass(name);
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} catch (ClassNotFoundException e) {
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byte[] classData = classes.get(name);
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return defineClass(name, classData, 0, classData.length);
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}
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}
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}
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