/* * Copyright (c) 2020, 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. */ import java.io.InputStream; import java.io.IOException; public class MyClassLoader extends ClassLoader { ClassLoader parent; ClassLoader appLoader; public MyClassLoader(ClassLoader parent, ClassLoader appLoader) { super(parent); this.parent = parent; this.appLoader = appLoader; } public Class loadClass(String name, boolean resolve) throws ClassNotFoundException { System.out.println("MyClassLoader: loadClass(\"" + name + "\", " + resolve + ")"); Class c; if (name.equals("MyHttpHandlerC")) { byte[] bytes; try (InputStream is = appLoader.getResourceAsStream("MyHttpHandlerC.class")) { bytes = is.readAllBytes(); } catch (IOException e) { throw new RuntimeException("Unexpected", e); } c = defineClass(name, bytes, 0, bytes.length); } else { c = super.loadClass(name, resolve); } System.out.println("MyClassLoader: loaded " + name + " = " + c); return c; } }