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POWhy does GregorianCalendar.getInstance contain a calsys and cdate of type Julian Calendar
 

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  1. POWhy does GregorianCalendar.getInstance contain a calsys and cdate of type Julian Calendar
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    <p>I tried to do set date value to a PreparedStatement with default value but the value is sometimes returned as a JulianValue. For example (Assume spanBegin and spanEnd are null)</p> <pre><code>Calendar cal = new GregorianCalendar(); if (spanBegin == null) { cal.set(0000, Calendar.JANUARY, 1); spanBegin = cal.getTime(); } if (spanEnd == null) { cal.set(9999, Calendar.DECEMBER, 31); spanEnd = cal.getTime(); } </code></pre> <p>On line number 3, since the date January 1, 0000 is scoped by a Julian Calendar, the CDate becomes a Julian Calendar. However, the next Date even if it is in the year 9999, its CDate becomes a Julian Calendar still. I had　to create another instance of Gregorian Calendar to fix the issue.</p> <pre><code>Calendar cal = new GregorianCalendar(); if (spanBegin == null) { cal.set(0000, Calendar.JANUARY, 1); spanBegin = cal.getTime(); } Calendar cal = new GregorianCalendar(); if (spanEnd == null) { cal.set(9999, Calendar.DECEMBER, 31); spanEnd = cal.getTime(); } </code></pre> <p>The question is, is the this an expected behavior or a bug on the date object? Actually using GregorianCalendar.getInstance() shows that the cdate is sometimes set to JulianCalendar.</p>
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    1. COAre you actually trying to represent the years 0 and 9999, or are these just "default" values?
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    2. COskaffman they are just default values in case the date is null for the database between clause
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