| /* |
| * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @bug 8003280 |
| * @summary Add lambda tests |
| * Test constructor reference |
| * @compile MethodRef4.java |
| * @run main MethodRef4 |
| */ |
| |
| public class MethodRef4 { |
| |
| static interface A {Fee<String> m();} |
| |
| static interface B {Fee<String> m(String s);} |
| |
| static interface C {Object m();} |
| |
| static class Fee<T> { |
| |
| private T t; |
| |
| public Fee() { |
| System.out.println("Fee<T> instantiated"); |
| } |
| |
| public Fee(T t) { |
| this.t = t; |
| System.out.println("Fee<T> instantiated: " + t); |
| } |
| |
| public void make() { |
| System.out.println(this + ": make()"); |
| } |
| } |
| |
| private static void assertTrue(boolean cond) { |
| if (!cond) |
| throw new AssertionError(); |
| } |
| |
| public static void main(String[] args) { |
| |
| A a = Fee<String>::new; //constructor reference to Fee<T>() |
| a.m().make(); |
| |
| B b = Fee<String>::new; //constructor reference to Fee<T>(String) |
| b.m("hi").make(); |
| |
| C c = MethodRef4::new; //constructor reference to MethodRef4() |
| assertTrue( c.m() instanceof MethodRef4 ); |
| c = MethodRef4::new; //constructor reference to MethodRef4() |
| assertTrue( c.m() instanceof MethodRef4 ); |
| c = Fee<String>::new; //constructor reference to Fee<T>() |
| assertTrue( c.m() instanceof Fee ); |
| } |
| } |