| /* |
| * Copyright (c) 2003, 2015, 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 4916607 |
| * @summary Test casts (warning) |
| * @author gafter |
| * |
| * @compile/ref=CastWarn.out -XDrawDiagnostics -Xlint:unchecked CastWarn.java |
| */ |
| |
| import java.util.*; |
| |
| class CastWarn { |
| |
| // --- Disjoint --- |
| |
| private interface DA<T> { } |
| private interface DB<T> extends DA<T> { } |
| private interface DC<T> extends DA<Integer> { } |
| |
| private <N extends Number, I extends Integer, R extends Runnable, S extends String> void disjointness() { |
| Object o; |
| |
| // Classes |
| o = (DA<? extends Runnable>) (DA<? extends Number>) null; // <<warn 2>> |
| o = (DA<? super Integer>) (DA<? extends Number>) null; // <<warn 3>> |
| o = (DA<? super String>) (DA<? super Number>) null; // <<warn 4>> |
| |
| // Typevars |
| o = (DA<? extends Integer>) (DA<N>) null; // <<warn 5>> |
| o = (DA<I>) (DA<? extends Number>) null; // <<warn 6>> |
| o = (DA<N>) (DA<? extends Integer>) null; // <<warn 7>> |
| o = (DA<N>) (DA<? extends Runnable>) null; // <<warn 8>> |
| |
| o = (DA<N>) (DA<I>) null; // <<warn 9>> |
| o = (DA<N>) (DA<R>) null; // <<warn 10>> |
| |
| // Raw (asymmetrical!) |
| o = (DA<Number>) (DB) null; // <<warn 11>> |
| o = (DA<? extends Number>) (DB) null; // <<warn 12>> |
| o = (DB<Number>) (DA) null; // <<warn 13>> |
| o = (DB<? extends Number>) (DA) null; // <<warn 14>> |
| } |
| } |