| /* |
| * 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 that the most specific reference is selected when method parameters are elided |
| * @compile MethodRef6.java |
| * @run main MethodRef6 |
| */ |
| |
| public class MethodRef6 { |
| |
| static interface A { String make(Integer i); } |
| |
| static interface B { String make(Number i); } |
| |
| private static void assertTrue(boolean cond) { |
| if (!cond) |
| throw new AssertionError(); |
| } |
| |
| static String m(Object o) { |
| return "Object " + o; |
| } |
| |
| static String m(Number n) { |
| return "Number " + n; |
| } |
| |
| static String m(Integer i) { |
| return "Integer " + i; |
| } |
| |
| static String m(int i) { |
| return "int " + i; |
| } |
| |
| public static void main(String[] args) { |
| A a = MethodRef6::m; |
| assertTrue(a.make(1).equals("Integer 1"));//method parameter type inferred from SAM descriptor, boxing applied |
| B b = MethodRef6::m; |
| assertTrue(b.make(1).equals("Number 1"));//method parameter type inferred from SAM descriptor, boxing and widen applied |
| } |
| } |