1 /*

     2  * Copyright (c) 2003, 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  * @bug 4916607

    27  * @summary Test casts (legal, warning, and errors)

    28  * @author gafter

    29  *

    30  * @compile/fail  CastFail11.java

    31  */

    32 

    33 import java.util.*;

    34 

    35 class CastTest {

    36 

    37     // --- Transferring parameters via supertypes ---

    38 

    39     private interface CA<T> { }

    40     private interface CB<T> extends CA<T> { }

    41     private interface CC<T> extends CA<T> { }

    42 

    43     private class CD<T> implements CB<T> { }

    44     private interface CE<T> extends CC<T> { }

    45 

    46     private interface CF<S> { }

    47     private interface CG<T> { }

    48     private class CH<S, T> implements CF<S>, CG<T> { }

    49     private interface CI<S> extends CF<S> { }

    50     private interface CJ<T> extends CG<T> { }

    51     private interface CK<S, T> extends CI<S>, CJ<T> { }

    52 

    53     private void supertypeParameterTransfer() {

    54         Object o;

    55         CD<?> cd = (CE<?>) null; // <<fail 11>>

    56     }

    57 

    58 }