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/*
* 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;
}
}
}
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