Java compare current date to db value

Posted on 2011-09-07
Last Modified: 2012-05-12
I need a routine to determine if the current date is more than 1 day later than a createDate value in a database.  So given the two dates, how to determine this:

   Date createDate = // get createDate from database
   Date curDate = new Date();
  // is curDate more than 1 day after createDate
Question by:jkavx
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LVL 47

Expert Comment

ID: 36500083
java.sql.Date dd = //from datbase

java.util.Dtae  d = new java.util.Date();

if(d.getTime() - dd.getTime() > 3600L*24L*1000L) {
//do somthing
//do somthing else
LVL 47

Expert Comment

ID: 36500103
in general it is probably betetr to use it in the slect statemnet

select * from table where sysdate - date_field > 1

that would be in Oracle

In other databses ssysdate will be similar but different sysntax
LVL 47

Expert Comment

ID: 36500164
One more way with Calendar

java.sql.Date dd = //from datbase

java.util.Date  d = new java.util.Date();

Calendar c = Calendar.getInstance();

Calendar c1 = Calendar.getInstance();

c.add(Calendar.DATE, 1);

java.util.Date d2 = c.getTime();
// do somthing
//do something

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Author Comment

ID: 36500232
These are great, thx.  It seems now like the business rule may be changing, so the test might be whether the currentDate is the next calendar day from the createdDate or more.  So if the createdDate is 9/7 and the currentDate is 9/8 then the condition is met.  How would you do that?
LVL 47

Expert Comment

ID: 36500274
I think something like taht should work.

Let me check it

GregorianCalendar gc1 = new GregorianCalendar(dd.getYear(), dd.getMonth(); dd.getDate());

GregorianCalendar gc2 = new GregorianCalendar(d.getYear(), d.getMonth(); d.getDate());


if(g1.equals(gc2)) {

} else



LVL 47

Accepted Solution

for_yan earned 500 total points
ID: 36500316
Sure t worrks fine:

       SimpleDateFormat sdf2 = new SimpleDateFormat("MM-dd-yyyy HH:mm:ss");

        java.util.Date dd = sdf2.parse("09-07-2011 16:15:13", new ParsePosition(0));

         java.util.Date dd2 = sdf2.parse("09-08-2011 08:15:13", new ParsePosition(0));

GregorianCalendar gc1 = new GregorianCalendar(dd.getYear(), dd.getMonth(), dd.getDate());

GregorianCalendar gc2 = new GregorianCalendar(dd2.getYear(), dd2.getMonth(), dd2.getDate());


if(gc1.equals(gc2)) {

     System.out.println("comparing dates true");

} else

    System.out.println("comparing dates false");

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comparing dates true

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