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