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-top
  28  *          using different flavours of named nested types
  29  * @compile -XDdisablePrivateAccessors TestPrivateStaticField.java
  30  * @run main TestPrivateStaticField
  31  */
  32 
  33 public class TestPrivateStaticField {
  34 
  35     // Private static field of nest-top for nestmates to access
  36     private static int priv_field;
  37 
  38     // public constructor so we aren't relying on private access
  39     public TestPrivateStaticField() {}
  40 
  41     // Methods that will access private static fields of nestmates
  42     // We use the arguments for overloading purposes and use the fact
  43     // you can access a static field through an object reference for
  44     // convenience. 
  45 
  46     // NOTE: No InnerNested calls in this test because non-static nested types
  47     // can't have static fields. Also no StaticIface calls as static interface
  48     // fields must be public (and final)
  49 
  50     void access_priv(TestPrivateStaticField o) {
  51         priv_field = o.priv_field++;
  52     }
  53     void access_priv(StaticNested o) {
  54         priv_field = o.priv_field++;
  55     }
  56 
  57     // The various nestmates
  58 
  59     static interface StaticIface {
  60 
  61         // Methods that will access private static fields of nestmates
  62 
  63         default void access_priv(TestPrivateStaticField o) {
  64             int priv_field = o.priv_field++;
  65         }
  66         default void access_priv(StaticNested o) {
  67             int priv_field = o.priv_field++;
  68         }
  69     }
  70 
  71     static class StaticNested {
  72 
  73         private static int priv_field;
  74 
  75         // public constructor so we aren't relying on private access
  76         public StaticNested() {}
  77 
  78         // Methods that will access private static fields of nestmates
  79 
  80         void access_priv(TestPrivateStaticField o) {
  81             priv_field = o.priv_field++;
  82         }
  83         void access_priv(StaticNested o) {
  84             priv_field = o.priv_field++;
  85         }
  86     }
  87 
  88     class InnerNested {
  89 
  90         // public constructor so we aren't relying on private access
  91         public InnerNested() {}
  92 
  93         void access_priv(TestPrivateStaticField o) {
  94             int priv_field = o.priv_field++;
  95         }
  96         void access_priv(StaticNested o) {
  97             int priv_field = o.priv_field++;
  98         }
  99     }
 100 
 101     public static void main(String[] args) {
 102         TestPrivateStaticField o = new TestPrivateStaticField();
 103         StaticNested s = new StaticNested();
 104         InnerNested i = o.new InnerNested();
 105         StaticIface intf = new StaticIface() {};
 106 
 107         o.access_priv(new TestPrivateStaticField());
 108         o.access_priv(s);
 109 
 110         s.access_priv(o);
 111         s.access_priv(new StaticNested());
 112 
 113         i.access_priv(o);
 114         i.access_priv(s);
 115 
 116         intf.access_priv(o);
 117         intf.access_priv(s);
 118     }
 119 }