Name: krC82822 Date: 12/16/2000


orig synopsis: "Calendar bug When 2 years are added to Dec 31st of a leap year"

16 Dec 2000, eval1127@eng -- reproducible with 1.3.0 and 1.4 beta45 (see below)
[filed against: Classic VM (build JDK-1.2.2-W, native threads, nojit)]
However, user's claim that adding 3 years works OK is incorrect. Adding anything
other than multiples of 4 years (i.e., choosing anything other than another
leap year) does not appear to work. See also #'s 4266783, 4147269.
----------------------------
This problem occurs ONLY WHEN the following is true - for the Calendar object
setLenient(false) is used,
the year is set to a leap year,
the date is set to December 31st of the leap year, and
"2" years are added to the year field.

Adding 3 [THIS IS NOT TRUE], 4 ... years does NOT throw this exception,
Any other date in the year does NOT throw this exception, Adding 2 years
to Dec 31st of any other year does NOT throw this exception either.

Here is the code

import java.util.Calendar;
import java.util.GregorianCalendar;

public class TestDates {
    private static void main(String[] _args){
        // Does not work
        GregorianCalendar c = new GregorianCalendar();
        c.setLenient(false);
        c.set(2000, 11, 31);
        System.out.println(c.getTime());
        c.add(Calendar.YEAR, 2);
        System.out.println(c.get(Calendar.YEAR) + "/" + c.get(Calendar.MONTH)
+ "/" + c.get(Calendar.DATE));
    }
}

Here is the runtime exception;

Exception in thread "main" java.lang.IllegalArgumentException
        at java.util.GregorianCalendar.computeTime(GregorianCalendar.java:1334)
        at java.util.Calendar.updateTime(Calendar.java:1311)
        at java.util.Calendar.complete(Calendar.java:874)
        at java.util.Calendar.get(Calendar.java:734)
        at TestDates.main(TestDates.java:14)

-------------

% java -version
java version "1.4.0beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0beta-b45)
Java HotSpot(TM) Client VM (build 1.4beta-B45, mixed mode)
% cd
% cd tests
% javac -d . TestDates113829.java
% java TestDates113829
Sun Dec 31 09:31:39 PST 2000
Exception in thread "main" java.lang.IllegalArgumentException
        at java.util.GregorianCalendar.computeTime(GregorianCalendar.java:1438)
        at java.util.Calendar.updateTime(Calendar.java:1533)
        at java.util.Calendar.complete(Calendar.java:1083)
        at java.util.Calendar.get(Calendar.java:941)
        at TestDates113829.main(TestDates113829.java:28)



(Review ID: 113829)
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Name: rmT116609 Date: 12/19/2000


java version "1.2.2"
Classic VM (Build JDK-1.2.2-001, native threads, symcjit)

while using Calendar to do some math on dates, I encountered a problem. When I
try to do some math on Calendar object having value 31 dec for any leap year,
the resultant Calendar object becomes invalid. Here's the examples I tried

// Does not work
java.util.Calendar c = java.util.Calendar.getInstance();
c.clear();
c.setLenient(false);
c.set(1904, 11, 31);
System.out.println(c.getTime());
c.add(java.util.Calendar.YEAR, 2);
System.out.println(c.getTime());

// Works
java.util.Calendar c = java.util.Calendar.getInstance();
c.clear();
c.setLenient(false);
c.set(1900, 11, 31);
System.out.println(c.getTime());
add(java.util.Calendar.YEAR, 2);
System.out.println(c.getTime());

The error message I get is-

java.lang.IllegalArgumentException
at java.util.GregorianCalendar.computeTime(GregorianCalendar.java:1368)
at java.util.Calendar.updateTime(Calendar.java:1508)
at java.util.Calendar.getTimeInMillis(Calendar.java:890)
at java.util.Calendar.before(Calendar.java:1113)
at gov.hud.hud50058.VLFamily.CheckMI(VLFamily.java)
at gov.hud.hud50058.VLFamily.checkFamily(VLFamily.java)
at gov.hud.hud50058.Validator.validate(Validator.java)
at gov.hud.hud50058.Validator.validateAll(Validator.java)
at gov.hud.hud50058.Converter.convertToXML(Converter.java)
at gov.hud.hud50058.Scheduler.run(Scheduler.java)
(Review ID: 113818)
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