1/* 2 * Copyright (c) 2011, 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 8003280 27 * @summary Add lambda tests 28 * Test that the most specific reference is selected when method parameters are elided 29 * @compile MethodRef6.java 30 * @run main MethodRef6 31 */ 32 33public class MethodRef6 { 34 35 static interface A { String make(Integer i); } 36 37 static interface B { String make(Number i); } 38 39 private static void assertTrue(boolean cond) { 40 if (!cond) 41 throw new AssertionError(); 42 } 43 44 static String m(Object o) { 45 return "Object " + o; 46 } 47 48 static String m(Number n) { 49 return "Number " + n; 50 } 51 52 static String m(Integer i) { 53 return "Integer " + i; 54 } 55 56 static String m(int i) { 57 return "int " + i; 58 } 59 60 public static void main(String[] args) { 61 A a = MethodRef6::m; 62 assertTrue(a.make(1).equals("Integer 1"));//method parameter type inferred from SAM descriptor, boxing applied 63 B b = MethodRef6::m; 64 assertTrue(b.make(1).equals("Number 1"));//method parameter type inferred from SAM descriptor, boxing and widen applied 65 } 66} 67