1 /* 2 * Copyright (c) 2018, 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 * 23 */ 24 25 package test; 26 27 // A simple class to extend an abstract class and get loaded with different 28 // loaders. This class is loaded via the bootstrap loader. A similar named class will 29 // be loaded via Loader2. 30 public class D_ambgs extends C { 31 32 // We are loaded by the bootstrap loader. iface is an object of a class 33 // loaded by Loader2. As it references D_ambgs, Loader2 will trigger 34 // loading the version known to it, which differs from this one. 35 public D_ambgs[] make(A iface) { 36 // This function needs to return a value known to be loaded from Loader2. 37 // Since I need to use a yet different loader, I need to make an unknown 38 // foreign call. In this case I'll be using an interface to make the 39 // unknown call, with but a single implementor so the compiler can do the 40 // upcast statically. 41 return iface == null ? null : iface.gen(); 42 } 43 }