Solved

Difference between 2 dates

Posted on 2004-04-15
6
151 Views
Last Modified: 2010-05-18
I have seen most of the solutions found here.  But I am having trouble with the calulation of the number of days when using 04/01/2004 to 04/30/2004 is calculating 29 days instead of 30.  But when I use something like 04/01/2004 - 04/03/2004 it is calcualting 3 days which is correct.  Also it is correct when I use 4/5/2004 - 04/30/2004.  it appears to only give an incorrect number when I use a start date from standard time and a end date from daylight savings time.

Anyone else experience this?

I am using the difference in milliseconds, diffMilli/(24*60*60*1000).

thanks,

Jim
0
Comment
Question by:jrmc_97
6 Comments
 
LVL 37

Accepted Solution

by:
zzynx earned 63 total points
ID: 10836070
I think this will work (UTC doesn't use daylight saving stuff):

Calendar c = Calendar.getInstance("UTC");
c.set(2004, 4, 1);
long l1 = c.getTimeInMillis();
c.set(2004, 4, 3);
long l2 = c.getTimeInMillis();
long difference = l2-l1;
0
 
LVL 86

Assisted Solution

by:CEHJ
CEHJ earned 62 total points
ID: 10836159
>>Calendar c = Calendar.getInstance("UTC");

should be


Calendar c = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
0
 
LVL 92

Expert Comment

by:objects
ID: 10837798
Depends what your definition of the number of days between two dates is.
0
 
LVL 30

Expert Comment

by:Mayank S
ID: 10839446
>> I am using the difference in milliseconds, diffMilli/(24*60*60*1000).

Shouldn't do that. Java has all the API you need for dates.
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

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
simple java question 3 59
hibernate insert example 13 34
jsp login check 12 42
SequenceInputStream example 3 19
Java Flight Recorder and Java Mission Control together create a complete tool chain to continuously collect low level and detailed runtime information enabling after-the-fact incident analysis. Java Flight Recorder is a profiling and event collectio…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
Viewers will learn about if statements in Java and their use The if statement: The condition required to create an if statement: Variations of if statements: An example using if statements:
This tutorial will introduce the viewer to VisualVM for the Java platform application. This video explains an example program and covers the Overview, Monitor, and Heap Dump tabs.

860 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