--- /dev/null 2016-05-17 12:01:17.473251102 +0900 +++ new/test/java/util/Calendar/Limit.java 2016-05-23 13:58:14.588061443 +0900 @@ -0,0 +1,64 @@ +/* + * Copyright (c) 1997, 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. + */ + +import java.util.*; +import java.text.*; + +/** + * Test GregorianCalendar limits, which should not exist. + * @test + * @bug 4056585 + * @summary Make sure that GregorianCalendar works far in the past and future. + * @author Alan Liu + */ +public class Limit { + static final long ONE_DAY = 24*60*60*1000L; + + public static void main(String args[]) throws Exception { + GregorianCalendar c = new GregorianCalendar(); + DateFormat fmt = new SimpleDateFormat("EEEE, MMMM dd, yyyy G", Locale.US); + long bigMillis = 300000000000000L; + + try { + // We check two things: + // 1. That handling millis in the range of +/- bigMillis works. + // bigMillis is a value that used to blow up. + // 2. The round-trip format/parse works in these extreme areas. + c.setTime(new Date(-bigMillis)); + String s = fmt.format(c.getTime()); + Date d = fmt.parse(s); + if (Math.abs(d.getTime() + bigMillis) >= ONE_DAY) { + throw new Exception(s + " != " + fmt.format(d)); + } + + c.setTime(new Date(+bigMillis)); + s = fmt.format(c.getTime()); + d = fmt.parse(s); + if (Math.abs(d.getTime() - bigMillis) >= ONE_DAY) { + throw new Exception(s + " != " + fmt.format(d)); + } + } catch (IllegalArgumentException | ParseException e) { + throw e; + } + } +}