NestedWildcards.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @bug 8039214
 * @summary Nested generic methods that work on wildcard-parameterized types
 * @compile NestedWildcards.java
 */

public class NestedWildcards {

    public static void test(Box<String> b) {
        foo(bar(b));
    }
    private static <X> Box<? extends X> foo(Box<? extends X> ts) {
        return null;
    }
    public static <Y> Box<? extends Y> bar(Box<? extends Y> language) {
        return null;
    }

    interface Box<T> {}
}