/* * Copyright (c) 2018, 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. */ /* @test * @bug 8188240 * @summary This is a test to ensure that proxies do not inherit static methods. * * @build ProxyClashTest * @run main ProxyClashTest */ import java.lang.reflect.Method; import java.lang.reflect.Proxy; import java.util.Observer; public class ProxyClashTest { public interface ClashWithRunnable { static int run() { return 123; } static void foo() {} } public static void main(String[] args) { System.err.println( "\nDynamic proxy API static method clash test\n"); Class[] interfaces = new Class[] { ClashWithRunnable.class, Runnable.class, Observer.class }; ClassLoader loader = ProxyClashTest.class.getClassLoader(); /* * Generate a proxy class. */ Class proxyClass = Proxy.getProxyClass(loader, interfaces); System.err.println("+ generated proxy class: " + proxyClass); for (Method method : proxyClass.getDeclaredMethods()) { if (method.getName().equals("run") && method.getReturnType() == int.class) { throw new RuntimeException("proxy inherited a static method"); } if (method.getName().equals("foo")) { throw new RuntimeException("proxy inherited a static method"); } } System.err.println("\nTEST PASSED"); } }