Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/lambda/methodReference/MethodRef4.java
test/tools/javac/lambda/methodReference/MethodRef4.java
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| 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 constructor reference | |
| 29 * @compile MethodRef4.java | |
| 30 * @run main MethodRef4 | |
| 31 */ | |
| 32 | |
| 33 public class MethodRef4 { | |
| 34 | |
| 35 static interface A {Fee<String> m();} | |
| 36 | |
| 37 static interface B {Fee<String> m(String s);} | |
| 38 | |
| 39 static interface C {Object m();} | |
| 40 | |
| 41 static class Fee<T> { | |
| 42 | |
| 43 private T t; | |
| 44 | |
| 45 public Fee() { | |
| 46 System.out.println("Fee<T> instantiated"); | |
| 47 } | |
| 48 | |
| 49 public Fee(T t) { | |
| 50 this.t = t; | |
| 51 System.out.println("Fee<T> instantiated: " + t); | |
| 52 } | |
| 53 | |
| 54 public void make() { | |
| 55 System.out.println(this + ": make()"); | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 private static void assertTrue(boolean cond) { | |
| 60 if (!cond) | |
| 61 throw new AssertionError(); | |
| 62 } | |
| 63 | |
| 64 public static void main(String[] args) { | |
| 65 | |
| 66 A a = Fee<String>::new; //constructor reference to Fee<T>() | |
| 67 a.m().make(); | |
| 68 | |
| 69 B b = Fee<String>::new; //constructor reference to Fee<T>(String) | |
| 70 b.m("hi").make(); | |
| 71 | |
| 72 C c = MethodRef4::new; //constructor reference to MethodRef4() | |
| 73 assertTrue( c.m() instanceof MethodRef4 ); | |
| 74 c = MethodRef4::new; //constructor reference to MethodRef4() | |
| 75 assertTrue( c.m() instanceof MethodRef4 ); | |
| 76 c = Fee<String>::new; //constructor reference to Fee<T>() | |
| 77 assertTrue( c.m() instanceof Fee ); | |
| 78 } | |
| 79 } |
