Date convertion in java

[Preethi]

Is it possible to convert integer into datetime?Can anyone say me how to convert from integer to date in java

[sukatoa]

Where did you get that integer?

All i know is a long type value that represents date & time.
and can be use as a reference for representing date and time in Calendar, GregorianCalendar, Date,DateFormat and SimpleDateFormat classes....

[rjuyal]

may be this what you wanted:

Code:

new Timestamp( new Long(myIntValue).longValue() );

or may be this one suits you:

Code:

new Date( new Long(myIntValue).longValue() );

P.N. Timestamp is in java.sql package

[Eranga]

This is also possible for a long value. But it's not safe. Suns' deprecated it since version 1.1 But still you can use it.

Code:

long someLong=1210759966477L;

Date anotherDate=new Date(someLong);
System.out.println(anotherDate.getDate());

[rjuyal]

as this is depricated, What is the replacement of this excerpt:

Code:

new java.sql.Date ( year,  month, date );

?

or where can i find which new methods we should use for the methods which are depricated?

[Eranga]

Or dear, you have to use

Code:

Calendar.get(Calendar.DAY_OF_MONTH).

All those things you can found in javadoc.

By the I got a quiz on it now

[rjuyal]

i don't want this actually,

Code:

Calendar.get(Calendar.DAY_OF_MONTH).

i am having my own date, how to convert that?

[Eranga]

What you mean? Looking to convert an int value to date?

[Preethi]

I'll get date value from the xml as string and convert it into date and then to integer and do drawing in applet using that value.Again,i have to update the new integer value as date in the database.Here where i'm struck up..i don't know how to convert an int value into date..Please help me..

[rjuyal]

see post #3

[Preethi]

Quote:

Date date = new Date(new Long(12234).longValue());

If i out put the date,its giving the same value for anykind of data as:Thu Jan 01 05:30:12 GMT+05:30 1970

[sukatoa]

Quote:

I'll get date value from the xml as string and convert it into date

date = xml_date_value_as_String;

Quote:

and then to integer

integer = convert(date) ====> What do you mean?

im just curious about what's going on in your implementation...
Maybe im out of topic but, could you post an example of

xml date as string?
integer from date(that represents xml date)?

Quote:

and do drawing in applet using that value.

Ahah?!!

Quote:

Again,i have to update the new integer value as date in the database.

is integer from date changed? or what you are talking about is another integer? Why is it updated? where did it came from?

Quote:

Here where i'm struck up..i don't know how to convert an int value into date..Please help me..

ok, can you also show that integer?(That would be used to convert into date) and the expected date pattern also....

[Eku]

Here is an example. I hope it helps

Code:

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Main {
private SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
private Date date2;
    public static void main(String[] args) {
        Main main = new Main();
        main.date();
    }
    public void date(){
      int year=2008,month=05,day=15;
     \\OR you can use
     \\String year="2008",month="05",day="15";
        try {
          date = format.parse(year+"-"+month+"-"+day);
        } catch (ParseException e) {
          e.printStackTrace();
        }

         System.out.println(format.format(date));
    }
}

[Eranga]

Actually you formatted a string in to date. Even you have int values, built a string and formated. Not bad at all.

But in our original post, try to convert an int value to date. What you can do if the date has in that format, where I discussed in post #4.

[Eku]

Post #4 is a direct approach from int to date. I tried to do it in my code but my problem is that is my date is stored in DB. It would be a lot of process to convert it to 'long' and compare it to another date. My friend here uses Strings, he converts everything to String before he manipulate it =P

I guess converting any format to date format is in the Programmers perogative.

As you see Preethi, there are lots of ways to do it in Java. You just need to Explore. =P

[Eranga]

Ya I know that. All those implementation depends on the application requirements.

Why you worried about that, storing in DB. Your code can do that.

[Eku]

Actually, my code will be used to maintain several databases and accepts different input files. Here they are using Oracle as their Back end software. The issue with Oracle is about their date. Since i cant change the original configuration of the company's date, i have to do something. Oracle doesnt accept the format m/d/yyyy. its most likely in mm/dd/yyyy format and they dont accept the '0' value. Like for example 01/02/2008. It will give me an error saying there is a null value. I made correction by creating my own date checker/converter. I hope Oracle do something about that. =P It took me about 2-3days just to fix that Date problem. Is there another easier way to Fix that?

[Eranga]

Sorry pal. I don't know much about Oracle. Most of the time I work on with MySql, and haven't found such as scenario before.

[Eku]

Thanks. MySql is Flexible in terms of Date data types than Oracle. Im still new to Oracle database, i dont have any proper training in it. Anyways, I think Preethi can now mark this [SOLVED]. =)

[Eranga]

Ya, it's much better if she got the point.