1 /*

     2  * Copyright (c) 2017, 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.

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    23 

    24 /*

    25  * @test

    26  * @bug 8046171

    27  * @summary Test access to private static fields between nestmates and nest-host

    28  *          using different flavours of named nested types

    29  * @run main TestPrivateStaticField

    30  */

    31 

    32 public class TestPrivateStaticField {

    33 

    34     // Private static field of nest-host for nestmates to access

    35     private static int priv_field;

    36 

    37     // public constructor so we aren't relying on private access

    38     public TestPrivateStaticField() {}

    39 

    40     // Methods that will access private static fields of nestmates

    41     // We use the arguments for overloading purposes and use the fact

    42     // you can access a static field through an object reference for

    43     // convenience.

    44 

    45     // NOTE: No InnerNested calls in this test because non-static nested types

    46     // can't have static fields. Also no StaticIface calls as static interface

    47     // fields must be public (and final)

    48 

    49     void access_priv(TestPrivateStaticField o) {

    50         priv_field = o.priv_field++;

    51     }

    52     void access_priv(StaticNested o) {

    53         priv_field = o.priv_field++;

    54     }

    55 

    56     // The various nestmates

    57 

    58     static interface StaticIface {

    59 

    60         // Methods that will access private static fields of nestmates

    61 

    62         default void access_priv(TestPrivateStaticField o) {

    63             int priv_field = o.priv_field++;

    64         }

    65         default void access_priv(StaticNested o) {

    66             int priv_field = o.priv_field++;

    67         }

    68     }

    69 

    70     static class StaticNested {

    71 

    72         private static int priv_field;

    73 

    74         // public constructor so we aren't relying on private access

    75         public StaticNested() {}

    76 

    77         // Methods that will access private static fields of nestmates

    78 

    79         void access_priv(TestPrivateStaticField o) {

    80             priv_field = o.priv_field++;

    81         }

    82         void access_priv(StaticNested o) {

    83             priv_field = o.priv_field++;

    84         }

    85     }

    86 

    87     class InnerNested {

    88 

    89         // public constructor so we aren't relying on private access

    90         public InnerNested() {}

    91 

    92         void access_priv(TestPrivateStaticField o) {

    93             int priv_field = o.priv_field++;

    94         }

    95         void access_priv(StaticNested o) {

    96             int priv_field = o.priv_field++;

    97         }

    98     }

    99 

   100     public static void main(String[] args) {

   101         TestPrivateStaticField o = new TestPrivateStaticField();

   102         StaticNested s = new StaticNested();

   103         InnerNested i = o.new InnerNested();

   104         StaticIface intf = new StaticIface() {};

   105 

   106         o.access_priv(new TestPrivateStaticField());

   107         o.access_priv(s);

   108 

   109         s.access_priv(o);

   110         s.access_priv(new StaticNested());

   111 

   112         i.access_priv(o);

   113         i.access_priv(s);

   114 

   115         intf.access_priv(o);

   116         intf.access_priv(s);

   117     }

   118 }