Fri, 24 Apr 2020 03:58:51 +0100
Merge
mcimadamore@1393 | 1 | /* |
jfranck@2020 | 2 | * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved. |
mcimadamore@1393 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
mcimadamore@1393 | 4 | * |
mcimadamore@1393 | 5 | * This code is free software; you can redistribute it and/or modify it |
mcimadamore@1393 | 6 | * under the terms of the GNU General Public License version 2 only, as |
mcimadamore@1393 | 7 | * published by the Free Software Foundation. |
mcimadamore@1393 | 8 | * |
mcimadamore@1393 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
mcimadamore@1393 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
mcimadamore@1393 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
mcimadamore@1393 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
mcimadamore@1393 | 13 | * accompanied this code). |
mcimadamore@1393 | 14 | * |
mcimadamore@1393 | 15 | * You should have received a copy of the GNU General Public License version |
mcimadamore@1393 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
mcimadamore@1393 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
mcimadamore@1393 | 18 | * |
mcimadamore@1393 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
mcimadamore@1393 | 20 | * or visit www.oracle.com if you need additional information or have any |
mcimadamore@1393 | 21 | * questions. |
mcimadamore@1393 | 22 | */ |
mcimadamore@1393 | 23 | |
mcimadamore@1393 | 24 | /* |
mcimadamore@1393 | 25 | * @test |
jfranck@2020 | 26 | * @bug 7192246 |
mcimadamore@1393 | 27 | * @summary basic test for default methods |
mcimadamore@1393 | 28 | * @author Maurizio Cimadamore |
mcimadamore@1393 | 29 | */ |
mcimadamore@1393 | 30 | |
mcimadamore@1393 | 31 | import java.util.*; |
mcimadamore@1393 | 32 | |
mcimadamore@1415 | 33 | public class Pos01 { |
mcimadamore@1393 | 34 | |
mcimadamore@1393 | 35 | interface Mapper<T> { |
mcimadamore@1393 | 36 | T map(T in); |
mcimadamore@1393 | 37 | } |
mcimadamore@1393 | 38 | |
mcimadamore@1393 | 39 | interface ExtendedList<T> extends List<T> { |
mcimadamore@1393 | 40 | default List<T> testMap(Mapper<T> r) { |
mcimadamore@1393 | 41 | return Pos01.<T>listMapper(this, r); |
mcimadamore@1393 | 42 | } |
mcimadamore@1393 | 43 | } |
mcimadamore@1393 | 44 | |
mcimadamore@1393 | 45 | static class MyList<E> extends ArrayList<E> implements ExtendedList<E> {} |
mcimadamore@1393 | 46 | |
mcimadamore@1393 | 47 | public static void main(String[] args) { |
mcimadamore@1393 | 48 | MyList<Integer> l = new MyList<Integer>(); |
mcimadamore@1393 | 49 | l.add(1); l.add(2); l.add(3); |
mcimadamore@1393 | 50 | l.testMap((Integer x) -> x * x ); |
mcimadamore@1393 | 51 | } |
mcimadamore@1393 | 52 | |
mcimadamore@1393 | 53 | static <T> List<T> listMapper(List<T> l, Mapper<T> mapper) { |
mcimadamore@1393 | 54 | MyList<T> new_list = new MyList<T>(); |
mcimadamore@1393 | 55 | for (T el : l) { |
mcimadamore@1393 | 56 | new_list.add(mapper.map(el)); |
mcimadamore@1393 | 57 | } |
mcimadamore@1393 | 58 | return new_list; |
mcimadamore@1393 | 59 | } |
mcimadamore@1393 | 60 | } |