Date for last month

[sam davis]

Hello,
Could someone help me out with the code to get the date for one month ago(last month)...and how would i account for the date rollover(when the year changes) i would really appreciate it..thanks..

[Joel McNary]

Use java.util.Calendar to accomplish this.

//Get an instance of Calendar; initialized to today
java.util.Calendar aCalendar = java.util.Calendar.getInstance();
//Subtract a month; the java.util.Calendar class handles the year rollover
aCalendar.add(aCalendar.MONTH, -1);
//If you want the first day of the month, use the following.
aCalendar.set(aCalendar.DATE, 1);
//If you need a java.util.Date object built from the Calendar (and most of us do), use the following
java.util.Date aDate = aCalendar.getTime();

[sam davis]

Thanks Joel for your help. However, i found roll() method to be better. Appreciate your help ..

[Joel McNary]

...But roll won't change the year!
From the
documentation

Example: Consider a GregorianCalendar originally set to August 31, 1999. Calling roll(Calendar.MONTH, 8) sets the calendar to April 30, 1999. Using a GregorianCalendar, the DAY_OF_MONTH field cannot be 31 in the month April. DAY_OF_MONTH is set to the closest possible value, 30. The YEAR field maintains the value of 1999 because it is a larger field than MONTH.

[ July 09, 2003: Message edited by: Joel McNary ]

[sam davis]

Hey Joel,
You are right..I'm sorry but i don't think i was clear about my response..i was talking about changing month...thats what i used roll() for..