1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/test/tools/javac/lambda/methodReference/MethodRef6.java Wed Apr 27 01:34:52 2016 +0800 1.3 @@ -0,0 +1,66 @@ 1.4 +/* 1.5 + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. 1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 1.7 + * 1.8 + * This code is free software; you can redistribute it and/or modify it 1.9 + * under the terms of the GNU General Public License version 2 only, as 1.10 + * published by the Free Software Foundation. 1.11 + * 1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT 1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1.15 + * version 2 for more details (a copy is included in the LICENSE file that 1.16 + * accompanied this code). 1.17 + * 1.18 + * You should have received a copy of the GNU General Public License version 1.19 + * 2 along with this work; if not, write to the Free Software Foundation, 1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1.21 + * 1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 1.23 + * or visit www.oracle.com if you need additional information or have any 1.24 + * questions. 1.25 + */ 1.26 + 1.27 +/** 1.28 + * @test 1.29 + * @bug 8003280 1.30 + * @summary Add lambda tests 1.31 + * Test that the most specific reference is selected when method parameters are elided 1.32 + * @compile MethodRef6.java 1.33 + * @run main MethodRef6 1.34 + */ 1.35 + 1.36 +public class MethodRef6 { 1.37 + 1.38 + static interface A { String make(Integer i); } 1.39 + 1.40 + static interface B { String make(Number i); } 1.41 + 1.42 + private static void assertTrue(boolean cond) { 1.43 + if (!cond) 1.44 + throw new AssertionError(); 1.45 + } 1.46 + 1.47 + static String m(Object o) { 1.48 + return "Object " + o; 1.49 + } 1.50 + 1.51 + static String m(Number n) { 1.52 + return "Number " + n; 1.53 + } 1.54 + 1.55 + static String m(Integer i) { 1.56 + return "Integer " + i; 1.57 + } 1.58 + 1.59 + static String m(int i) { 1.60 + return "int " + i; 1.61 + } 1.62 + 1.63 + public static void main(String[] args) { 1.64 + A a = MethodRef6::m; 1.65 + assertTrue(a.make(1).equals("Integer 1"));//method parameter type inferred from SAM descriptor, boxing applied 1.66 + B b = MethodRef6::m; 1.67 + assertTrue(b.make(1).equals("Number 1"));//method parameter type inferred from SAM descriptor, boxing and widen applied 1.68 + } 1.69 +}