/*

 * Copyright (c) 2004, 2016, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * 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).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/**

 * @test

 * @bug 4990596

 * @summary Make sure that any subclass of Number can be formatted using DecimalFormat.format().

 */

import java.text.DecimalFormat;

public class Bug4990596 {

    public static void main(String[] args) {

        new DecimalFormat().format(new MutableInteger(0));

    }

    @SuppressWarnings("serial")

    public static class MutableInteger extends Number {

        public int value;

        public MutableInteger() {

        }

        public MutableInteger(int value) {

            this.value = value;

        }

        public double doubleValue() {

            return this.value;

        }

        public float floatValue() {

            return this.value;

        }

        public int intValue() {

            return this.value;

        }

        public long longValue() {

            return this.value;

        }

    }

}