Solved

Java compare current date to db value

Posted on 2011-09-07
6
236 Views
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
0
Comment
Question by:jkavx
  • 5
6 Comments
 
LVL 47

Expert Comment

by:for_yan
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
}else
{
//do somthing else
}
0
 
LVL 47

Expert Comment

by:for_yan
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
0
 
LVL 47

Expert Comment

by:for_yan
ID: 36500164
One more way with Calendar
object

java.sql.Date dd = //from datbase

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


Calendar c = Calendar.getInstance();
c.setTime(dd);

Calendar c1 = Calendar.getInstance();
c1.setTime(d);

c.add(Calendar.DATE, 1);

java.util.Date d2 = c.getTime();
if(dd.after(d2)){
// do somthing
}
else
{
//do something
}





0
Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

 

Author Comment

by:jkavx
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?
0
 
LVL 47

Expert Comment

by:for_yan
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());

gc1.add(Calendar.DATE,1);

if(g1.equals(gc2)) {


} else

{

}






0
 
LVL 47

Accepted Solution

by:
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());

gc1.add(Calendar.DATE,1);

if(gc1.equals(gc2)) {

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

} else

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

Open in new window


output:

comparing dates true

Open in new window

0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
nextBoolean(double p) for Random class 3 41
jdbc error in jsp application 20 63
tomcat startup error 5 101
Java: anonymous class 4 29
Are you developing a Java application and want to create Excel Spreadsheets? You have come to the right place, this article will describe how you can create Excel Spreadsheets from a Java Application. For the purposes of this article, I will be u…
Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
Viewers learn how to read error messages and identify possible mistakes that could cause hours of frustration. Coding is as much about debugging your code as it is about writing it. Define Error Message: Line Numbers: Type of Error: Break Down…
Viewers will learn about basic arrays, how to declare them, and how to use them. Introduction and definition: Declare an array and cover the syntax of declaring them: Initialize every index in the created array: Example/Features of a basic arr…

808 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question