FULL PRODUCT VERSION :


ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.2.9200]

A DESCRIPTION OF THE PROBLEM :
when the local time is 31/07/2013

then i set the month in calendar object to 8

because i set calender month to 8 and it is zero-index base
then the month must be month 9 = (September)

i notice that this error occured when the current day 31/07/2013


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1- change the local time to be 31/07/2013
2- execute the code
       Calendar calendar = new GregorianCalendar();

        System.out.println( " Current Date: " + sdf.format(calendar.getTime()));
        
        calendar.set(Calendar.MONTH, 8);
        
        sdf = new SimpleDateFormat( " dd/MM/yyyy " );
        System.out.println( " Changed Date: " + sdf.format(calendar.getTime()));

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Current Date: 31/07/2013
Changed Date: 31/09/2013
ACTUAL -
Current Date: 31/07/2013
Changed Date: 01/10/2013

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;


public class TimeTest {
      public static void main(String[] args) {
SimpleDateFormat sdf = new SimpleDateFormat( " dd/MM/yyyy " );
        Calendar calendar = new GregorianCalendar();

        System.out.println( " Current Date: " + sdf.format(calendar.getTime()));
        
        calendar.set(Calendar.MONTH, 8);
        
        sdf = new SimpleDateFormat( " dd/MM/yyyy " );
        System.out.println( " Changed Date: " + sdf.format(calendar.getTime()));
}

}
---------- END SOURCE ----------

SUPPORT :
YES