FULL PRODUCT VERSION :
java version "1.4.2_08"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.
Java HotSpot(TM) Client VM (build 1.4.2_08-b03, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
 customer  Windows XP [version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
With the date "28-February-2007", when I use add(Calendar.MONTH, 1), the result is "28-March-2007" but not "31-March-2007". This is not coherent with the Javadoc of the class Calendar.


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package test;

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

import junit.framework.TestCase;

/**
 * @author Hong Nam NGUYEN -- Created: 4 oct. 07 - 10:38:28
 */
public class CalendarTest extends TestCase
{
	final int		MONTH			= Calendar.MONTH;
	final int		DAY_OF_MONTH	= Calendar.DAY_OF_MONTH;
	
	static Calendar	calendar		= new GregorianCalendar();

	static
	{
		calendar.clear();
		calendar.set(2007, Calendar.JANUARY, 31);
	}

	public void testAdd1()
	{
		calendar.roll(MONTH, 1);
		assertEquals("Should be February", Calendar.FEBRUARY, calendar.get(MONTH));
		assertEquals("Should be 28", 28, calendar.get(DAY_OF_MONTH));
	}

	public void testAdd2()
	{
		calendar.roll(MONTH, 1);
		assertEquals("Should be March", Calendar.MARCH, calendar.get(MONTH));
		assertEquals("Should be 31", 31, calendar.get(DAY_OF_MONTH));
	}
}

---------- END SOURCE ----------
Posted Date : 2007-10-10 08:11:42.0

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