test/tools/javac/defaultMethods/Pos01.java

Sat, 17 Nov 2012 19:01:03 +0000

author
mcimadamore
date
Sat, 17 Nov 2012 19:01:03 +0000
changeset 1415
01c9d4161882
parent 1393
d7d932236fee
child 2020
bb7271e64ef6
permissions
-rw-r--r--

8003280: Add lambda tests
Summary: Turn on lambda expression, method reference and default method support
Reviewed-by: jjg

     1 /*
     2  * Copyright (c) 2011, 2012, 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  */
    24 /*
    25  * @test
    26  * @summary basic test for default methods
    27  * @author  Maurizio Cimadamore
    28  */
    30 import java.util.*;
    32 public class Pos01 {
    34     interface Mapper<T> {
    35         T map(T in);
    36     }
    38     interface ExtendedList<T> extends List<T> {
    39         default List<T> testMap(Mapper<T> r) {
    40             return Pos01.<T>listMapper(this, r);
    41         }
    42     }
    44     static class MyList<E> extends ArrayList<E> implements ExtendedList<E> {}
    46     public static void main(String[] args) {
    47        MyList<Integer> l = new MyList<Integer>();
    48        l.add(1); l.add(2); l.add(3);
    49        l.testMap((Integer x) -> x * x );
    50     }
    52     static <T> List<T> listMapper(List<T> l, Mapper<T> mapper) {
    53         MyList<T> new_list = new MyList<T>();
    54         for (T el : l) {
    55             new_list.add(mapper.map(el));
    56         }
    57         return new_list;
    58     }
    59 }

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