1 /*
   2  * Copyright (c) 2015, 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    8071453
  27  * @summary Verify that generics work with private method in interface
  28  */
  29 
  30 public class PrivateGenerics {
  31 
  32     interface I<T> {
  33         private T foo() { return null; };
  34         default void m(T t) {
  35             T t1 = t;
  36             T t2 = foo();
  37         }
  38     }
  39 
  40     interface J {
  41         private <M> M foo() { return null; }
  42         default <N> void m(N n) {
  43             N n1 = n;
  44             N n2 = foo();
  45         }
  46     }
  47 
  48     public static void main(String[] args) {
  49         I<String> i = new I<>() {};
  50         i.m("string");
  51         String s = i.foo();
  52 
  53         J j = new J() {};
  54         j.m("string");
  55         s = j.foo();
  56     }
  57 }