test/tools/javac/generics/inference/6365166/NewTest.java

Tue, 20 Aug 2013 17:34:06 +0400

author
kizune
date
Tue, 20 Aug 2013 17:34:06 +0400
changeset 1959
55da6b3a6940
parent 554
9d9f26857129
child 2525
2eb010b6cb22
permissions
-rw-r--r--

7182350: Regression in wording of unchecked warning message
Reviewed-by: mcimadamore, jjg

duke@1 1 /*
ohair@554 2 * Copyright (c) 2005, 2007, Oracle and/or its affiliates. All rights reserved.
duke@1 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1 4 *
duke@1 5 * This code is free software; you can redistribute it and/or modify it
duke@1 6 * under the terms of the GNU General Public License version 2 only, as
duke@1 7 * published by the Free Software Foundation.
duke@1 8 *
duke@1 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@1 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@1 13 * accompanied this code).
duke@1 14 *
duke@1 15 * You should have received a copy of the GNU General Public License version
duke@1 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@1 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1 18 *
ohair@554 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554 20 * or visit www.oracle.com if you need additional information or have any
ohair@554 21 * questions.
duke@1 22 */
duke@1 23
duke@1 24 /**
duke@1 25 * @test
duke@1 26 * @bug 6365166
duke@1 27 * @summary javac (generic) unable to resolve methods
duke@1 28 * @compile NewTest.java
duke@1 29 */
duke@1 30
duke@1 31 import java.util.*;
duke@1 32
duke@1 33 public class NewTest<A,B> {
duke@1 34 private List<A> toAdd;
duke@1 35
duke@1 36 public NewTest(List<A> toAdd) {
duke@1 37 this.toAdd = toAdd;
duke@1 38 }
duke@1 39
duke@1 40 private List<A> getRelated(B b) {
duke@1 41 //some application logic
duke@1 42 //for demo
duke@1 43 return toAdd;
duke@1 44 }
duke@1 45
duke@1 46 @SuppressWarnings("unchecked")
duke@1 47 public <L extends List<? super A>,LF extends Factory<L>> L addOrCreate4(B b,L l,LF lf) {
duke@1 48 if (l == null) {
duke@1 49 l = lf.create();
duke@1 50 }
duke@1 51 ((List<? super A>)l).addAll(getRelated(b)); //to get round the compiler bug
duke@1 52 return l;
duke@1 53 }
duke@1 54
duke@1 55 public static class ListFactory<T> implements Factory<List<T>>{
duke@1 56 public List<T> create() {
duke@1 57 return new ArrayList<T>();
duke@1 58 }
duke@1 59 }
duke@1 60 public static interface Factory<T> {
duke@1 61 public T create();
duke@1 62 }
duke@1 63
duke@1 64 public static void main(String ... args) {
duke@1 65 ListFactory<Number> lf = new ListFactory<Number>();
duke@1 66 List<Long> longs = new ArrayList<Long>();
duke@1 67 longs.add(new Long(1));
duke@1 68 NewTest<Long,Number> test = new NewTest<Long,Number>(longs);
duke@1 69
duke@1 70 List<Number> ret4 = null;
duke@1 71
duke@1 72 ret4 = test.addOrCreate4(1, ret4,lf);
duke@1 73
duke@1 74 }
duke@1 75 }

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