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.
  22  */
  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 }