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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
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22  */
23 
24 import org.testng.annotations.Test;
25 
26 import java.util.function.Supplier;
27 
28 /**
29  * TestInnerCtorRef
30  */
31 // @Test
32 public class TestInnerCtorRef {
33 
testCtorRef()34     public void testCtorRef() {
35         A<String> a = A.make(() -> "");
36     }
37 }
38 
39 abstract class A<T> {
make()40     abstract T make();
41 
A()42     private A() {
43     }
44 
45     public interface Foo<T> { }
make(Supplier<T> factory)46     public static<T> A<T> make(Supplier<T> factory) {
47         class Local implements Foo<T> {
48             Supplier<T> f = factory;
49         }
50         return new Helper<T>(Local::new);
51     }
52 
53     private static class Helper<T> extends A<T> {
54 
Helper(Supplier<Foo<T>> factory)55         private Helper(Supplier<Foo<T>> factory) {
56         }
57 
58         @Override
make()59         T make() {
60             return null;
61         }
62     }
63 }
64