| /* |
| * 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 parameter types are inferred from SAM descriptor when method parameters are elided, |
| with different types of method references |
| * @compile MethodRef7.java |
| * @run main MethodRef7 |
| */ |
| |
| public class MethodRef7 { |
| |
| static interface A {void m();} |
| |
| static interface A2 {void m(int n);} |
| |
| static interface B {String m();} |
| |
| static interface B2 {String m(int n);} |
| |
| static interface C {String m(MethodRef7 mr);} |
| |
| static interface C2 {String m(MethodRef7 mr, int n);} |
| |
| static interface D {Fee<String> m();} |
| |
| static interface D2 {Fee<String> m(String s);} |
| |
| static class Fee<T> { |
| |
| public Fee() { |
| System.out.println("Fee<T> instantiated"); |
| } |
| |
| public Fee(String s) { |
| System.out.println("Fee<T> instantiated: " + s); |
| } |
| } |
| |
| private static void assertTrue(boolean cond) { |
| if (!cond) |
| throw new AssertionError(); |
| } |
| |
| static void bar() { |
| System.out.println("MethodRef_neg1.bar()"); |
| } |
| |
| static void bar(int x) { |
| System.out.println("MethodRef_neg1.bar(int) " + x); |
| } |
| |
| String wahoo() { |
| return "wahoo"; |
| } |
| |
| String wahoo(int x) { |
| return "wahoo " + x; |
| } |
| |
| public static void main(String[] args) { |
| |
| A a = MethodRef7::bar; //static reference to bar() |
| a.m(); |
| A2 a2 = MethodRef7::bar; //static reference to bar(int x) |
| a2.m(10); |
| |
| MethodRef7 mr = new MethodRef7(); |
| B b = mr::wahoo; //instance reference to wahoo() |
| assertTrue(b.m().equals("wahoo")); |
| B2 b2 = mr::wahoo; //instance reference to wahoo(int x) |
| assertTrue(b2.m(1).equals("wahoo 1")); |
| |
| C c = MethodRef7::wahoo; //unbound reference to wahoo() |
| assertTrue(c.m(mr).equals("wahoo")); |
| C2 c2 = MethodRef7::wahoo; //unbound reference to wahoo(int x) |
| assertTrue(c2.m(mr, 2).equals("wahoo 2")); |
| |
| D d = Fee<String>::new; //constructor reference to Fee() |
| D2 d2 = Fee<String>::new; //constructor reference to Fee(String s) |
| } |
| } |