76 lines
2.3 KiB
Java
76 lines
2.3 KiB
Java
/*
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* Copyright (c) 2005, 2007, 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 6365166
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* @summary javac (generic) unable to resolve methods
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* @compile NewTest.java
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*/
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import java.util.*;
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public class NewTest<A,B> {
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private List<A> toAdd;
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public NewTest(List<A> toAdd) {
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this.toAdd = toAdd;
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}
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private List<A> getRelated(B b) {
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//some application logic
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//for demo
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return toAdd;
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}
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@SuppressWarnings("unchecked")
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public <L extends List<? super A>,LF extends Factory<L>> L addOrCreate4(B b,L l,LF lf) {
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if (l == null) {
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l = lf.create();
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}
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((List<? super A>)l).addAll(getRelated(b)); //to get round the compiler bug
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return l;
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}
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public static class ListFactory<T> implements Factory<List<T>>{
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public List<T> create() {
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return new ArrayList<T>();
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}
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}
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public static interface Factory<T> {
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public T create();
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}
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public static void main(String ... args) {
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ListFactory<Number> lf = new ListFactory<Number>();
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List<Long> longs = new ArrayList<Long>();
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longs.add(new Long(1));
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NewTest<Long,Number> test = new NewTest<Long,Number>(longs);
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List<Number> ret4 = null;
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ret4 = test.addOrCreate4(1, ret4,lf);
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}
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}
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