1/* 2 * Copyright (c) 2003, 2015, 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 * @test 26 * @summary Test subtyping for wildcards with related type bounds. 27 * 28 * @compile/fail/ref=AssignmentDifferentTypes.out -XDrawDiagnostics AssignmentDifferentTypes.java 29 */ 30 31public class AssignmentDifferentTypes { 32 33 public static void main(String[] args) { 34 Ref<Der> derexact = null; 35 Ref<Base> baseexact = null; 36 Ref<? extends Der> derext = null; 37 Ref<? extends Base> baseext = null; 38 Ref<? super Der> dersuper = null; 39 Ref<? super Base> basesuper = null; 40 41 baseext = derext; // <<pass>> <? extends Base> = <? extends Der> 42 baseext = derexact; // <<pass>> <? extends Base> = <Der> 43 dersuper = basesuper; // <<pass>> <? super Der> = <? super Base> 44 dersuper = baseexact; // <<pass>> <? super Der> = <Base> 45 46 derexact = baseexact; // <<fail>> <Der> = <Base> 47 baseexact = derexact; // <<fail>> <Base> = <Der> 48 derext = baseext; // <<fail>> <? extends Der> = <? extends Base> 49 derext = baseexact; // <<fail>> <? extends Der> = <Base> 50 derext = basesuper; // <<fail>> <? extends Der> = <? super Base> 51 baseext = dersuper; // <<fail>> <? extends Base> = <? super Der> 52 basesuper = dersuper; // <<fail>> <? super Base> = <? super Der> 53 basesuper = derexact; // <<fail>> <? super Base> = <Der> 54 } 55} 56 57class Ref<T> {} 58class Base {} 59class Der extends Base {} 60