1 /*
   2  * Copyright 2003 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @summary Test subtyping for wildcards with the same type bound.
  27  *
  28  * @compile  AssignmentSameType1.java
  29  */
  30 
  31 public class AssignmentSameType1 {
  32 
  33     public static void main(String[] args) {
  34         Ref<B> exact = null;
  35         Ref<? extends B> ebound = null;
  36         Ref<? super B> sbound = null;
  37         Ref<?> unbound = null;
  38 
  39 ;       exact = exact;          // <<pass>> <A> = <A>
  40 
  41         ebound = exact;         // <<pass>> <? extends A> = <A>
  42         ebound = ebound;        // <<pass>> <? extends A> = <? extends A>
  43 
  44         sbound = exact;         // <<pass>> <? super A> = <A>
  45         sbound = sbound;        // <<pass>> <? super A> = <? super A>
  46 
  47         unbound = exact;        // <<pass>> <?> = <A>
  48         unbound = ebound;       // <<pass>> <?> = <? extends A>
  49         unbound = sbound;       // <<pass>> <?> = <? super A>
  50         unbound = unbound;      // <<pass>> <?> = <?>
  51     }
  52 }
  53 
  54 class Ref<A> {}
  55 class B {}