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Java example source code file (ByteCodeLoader.java)
The ByteCodeLoader.java Java example source code/* * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.java.testlibrary; import java.security.SecureClassLoader; /** * {@code ByteCodeLoader} can be used for easy loading of byte code already * present in memory. * * {@code InMemoryCompiler} can be used for compiling source code in a string * into byte code, which then can be loaded with {@code ByteCodeLoader}. * * @see InMemoryCompiler */ public class ByteCodeLoader extends SecureClassLoader { private final String className; private final byte[] byteCode; /** * Creates a new {@code ByteCodeLoader} ready to load a class with the * given name and the given byte code. * * @param className The name of the class * @param byteCode The byte code of the class */ public ByteCodeLoader(String className, byte[] byteCode) { this.className = className; this.byteCode = byteCode; } @Override protected Class<?> findClass(String name) throws ClassNotFoundException { if (!name.equals(className)) { throw new ClassNotFoundException(name); } return defineClass(name, byteCode, 0, byteCode.length); } /** * Utility method for creating a new {@code ByteCodeLoader} and then * directly load the given byte code. * * @param className The name of the class * @param byteCode The byte code for the class * @throws ClassNotFoundException if the class can't be loaded * @return A {@see Class} object representing the class */ public static Class<?> load(String className, byte[] byteCode) throws ClassNotFoundException { return new ByteCodeLoader(className, byteCode).loadClass(className); } } Other Java examples (source code examples)Here is a short list of links related to this Java ByteCodeLoader.java source code file: |
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