67 lines
2.1 KiB
Java
67 lines
2.1 KiB
Java
/*
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* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8003280
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* @summary Add lambda tests
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* Test that the most specific reference is selected when method parameters are elided
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* @compile MethodRef6.java
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* @run main MethodRef6
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*/
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public class MethodRef6 {
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static interface A { String make(Integer i); }
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static interface B { String make(Number i); }
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private static void assertTrue(boolean cond) {
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if (!cond)
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throw new AssertionError();
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}
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static String m(Object o) {
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return "Object " + o;
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}
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static String m(Number n) {
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return "Number " + n;
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}
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static String m(Integer i) {
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return "Integer " + i;
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}
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static String m(int i) {
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return "int " + i;
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}
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public static void main(String[] args) {
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A a = MethodRef6::m;
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assertTrue(a.make(1).equals("Integer 1"));//method parameter type inferred from SAM descriptor, boxing applied
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B b = MethodRef6::m;
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assertTrue(b.make(1).equals("Number 1"));//method parameter type inferred from SAM descriptor, boxing and widen applied
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}
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}
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