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How to set System Date & time

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ramjeev

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How to set System Date & time

Mar 14th, 2008

Hi buddies,
I m facing some difficulties while setting system date and time?..Can anyone help to set System date & time?

Thanks

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Re: How to set System Date & time

Mar 14th, 2008

- Open a command prompt
- Type in: date
- it prompts you for new date/time
- enter new values.

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ramjeev

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Re: How to set System Date & time

Mar 15th, 2008

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Originally Posted by new_2_java

- Open a command prompt
- Type in: date
- it prompts you for new date/time
- enter new values.

Thanks for reply.I want to set date & time programatically thru Java.

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Join Date: Aug 2007

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darkagn

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Re: How to set System Date & time

Mar 15th, 2008

You can GET the date and time by using

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 java Syntax (Toggle Plain Text) 
System.currentTimeMillis();
System.currentTimeMillis();

This returns a long type that represents the number of milliseconds since Jan 1, 1970. You can format that long by using the java.util.Calendar and java.text.DateFormat classes.

There are no stupid questions, only those too stupid to ask for help.
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Re: How to set System Date & time

Mar 15th, 2008

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Originally Posted by darkagn

You can GET the date and time by using
Help with Code Tags

java Syntax (Toggle Plain Text)
System.currentTimeMillis();
System.currentTimeMillis();
This returns a long type that represents the number of milliseconds since Jan 1, 1970. You can format that long by using the java.util.Calendar and java.text.DateFormat classes.

I m using Calendar class only as follows,

Calendar date = Calendar.getInstance();
date.set(i_year,i_mon,i_dt,i_hr,i_min,i_sec);
System.out.println("...."+date.get(Calendar.HOUR_OF_DAY)+"..."+date.get(Calendar.MINUTE)+"..."+date.get(Calendar.SECOND));

After setting the date,time ,I can fetch the updated date for this same instance thru programatically but still i can see the old time in system calendar.
For anyother instance as below ,i can get only the old date and not the updated one.

Calendar dateNew = Calendar.getInstance();

Please help.

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Ezzaral

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Re: How to set System Date & time

Mar 15th, 2008

The only way that you would be able to set the system time is through JNI calls to the OS.

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Re: How to set System Date & time

Mar 17th, 2008

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Originally Posted by Ezzaral

The only way that you would be able to set the system time is through JNI calls to the OS.

Thanks.
I dont know how to use JNI , if u hav samples ,pls guide me with that.

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ramjeev

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Re: How to set System Date & time

Mar 17th, 2008

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Originally Posted by ramjeev

Thanks.
I dont know how to use JNI , if u hav samples ,pls guide me with that.

I got a way to fix this,

String timestr="15:00";
String datestr="03-15-2008";
Runtime rt = Runtime.getRuntime();
Process proc;
proc = rt.exec("cmd /C date " + datestr);
proc = rt.exec("cmd /C time " + timestr);

However,this can only work on windows.

Thanks a lot for all ur support.