61 lines
1.9 KiB
Java
61 lines
1.9 KiB
Java
/*
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* Copyright (c) 2011, 2013, 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 7192246
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* @summary basic test for default methods
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* @author Maurizio Cimadamore
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*/
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import java.util.*;
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public class Pos01 {
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interface Mapper<T> {
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T map(T in);
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}
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interface ExtendedList<T> extends List<T> {
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default List<T> testMap(Mapper<T> r) {
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return Pos01.<T>listMapper(this, r);
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}
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}
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static class MyList<E> extends ArrayList<E> implements ExtendedList<E> {}
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public static void main(String[] args) {
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MyList<Integer> l = new MyList<Integer>();
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l.add(1); l.add(2); l.add(3);
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l.testMap((Integer x) -> x * x );
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}
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static <T> List<T> listMapper(List<T> l, Mapper<T> mapper) {
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MyList<T> new_list = new MyList<T>();
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for (T el : l) {
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new_list.add(mapper.map(el));
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}
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return new_list;
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}
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}
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