I need to know about date function in Java

Hi All,
Here is my question - I need to subract 18 months from a particular date. How do I do that using Java coding?
eg: 09/30/2003 - 18 months = 03/30/2002
I have to to code this in Java in order to use it in one of my application. I would appreciate your help.
Thanks & Regards
Simly

Hi There,
Thank you for your reply...Need some more help...
This is the case I want to deal with. I need to calculate the value for the field called "mydate"
These are the three dates, I am going to deal with:
1.olddate = I have a value for it -> eg: 05/12/1998
2.today = Today's date -> eg: 09/30/2003
3.newdate = today.month - 18 months -> eg: today.month =09-18=03/30/2002
These are the three dates values.
Now what I need to do is,
If olddate(05/12/1998) > newdate (03/30/1998)
then "mydate" = newdate -> 03/30/2002
Else "mydate" = olddate -> 05/12/1998
I am a good C++ programmer & a student and I am right now learning all the Java packages. I am having the greatest problem with the calcuation of value to the variable "new date". And also with the "If condition statement". I am aware of the before, after, getMonth methods. But, I am having problem in using them in this case. Could you please give me the exact coding for the declaration of the variables and the value calculation(in this specific case). I would appreciate your time and help.
Thanks & Regards
Simly

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