1/* 2 * Copyright (c) 2004, 2016, 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 */ 23 24/** 25 * @test 26 * @bug 4990596 27 * @summary Make sure that any subclass of Number can be formatted using DecimalFormat.format(). 28 */ 29 30import java.text.DecimalFormat; 31 32public class Bug4990596 { 33 34 public static void main(String[] args) { 35 new DecimalFormat().format(new MutableInteger(0)); 36 } 37 38 @SuppressWarnings("serial") 39 public static class MutableInteger extends Number { 40 public int value; 41 42 public MutableInteger() { 43 } 44 public MutableInteger(int value) { 45 this.value = value; 46 } 47 public double doubleValue() { 48 return this.value; 49 } 50 public float floatValue() { 51 return this.value; 52 } 53 public int intValue() { 54 return this.value; 55 } 56 public long longValue() { 57 return this.value; 58 } 59 } 60} 61