Time difference in inlclueding millisenconds

I am trying to get the time difference in millisends.
currently i am using following logic and found it is not giving accurate result.
java.util.Date d1 = new java.util.Date();
java.text.SimpleDateFormat f1 = new java.text.SimpleDateFormat("HH:mm:ss SSSSSSSSSSSSS");
Date today1;
String dateOut1;
DateFormat dateFormatter1;
// DateFormat formatter;
Locale currentLocale1 = new Locale("en", "US");
dateFormatter1 = DateFormat.getDateInstance(DateFormat.DEFAULT, currentLocale1);
today1 = new Date();
double sec = today1.getSeconds();
System.out.println("nano secnonds : "+today1.getTime()+"<==="+today.getTime());
System.out.println("milli sec : "+today1.getTime()+"<==="+today1.getTime()/1000000);
System.out.println("date : "+today1.getDate()+"<==="+today.getDate());
System.out.println("hours : "+today1.getHours()+"<==="+today.getHours());
int min1 = today1.getMinutes() - today.getMinutes();
System.out.println("difference min : "+min1);
int sec1 = today1.getSeconds() - today.getSeconds();
System.out.println("difference seconds : "+sec1);
long time1 = today1.getTime()- today.getTime();
System.out.println("difference time: "+time1);
System.out.println("date difference : "+today1.compareTo(today)+"<====");
dateOut1 = dateFormatter1.format(today1);
long leftVal =0;
int seconds = sec1 - 1;
long timeval = 1000 - time1;
System.out.println("timeval : "+timeval+"<===");
if (time1 > 1000)
leftVal = 1000 - time1;
seconds = sec1;
else
leftVal = time1;
seconds = sec1;
Can anyone help in getting the time difference in hours, minutes, senconds and milliseconds
Sumanth

Could you please tell me is there any function which can simply returns me the time diffrence,That is the time difference.
If you want to display the difference in a different format then do so....
long time1 = ....
long timesecs = time1/1000;
long hours = timesecs/3600;
long minutes = (timesecs - hours * 3600)/60;
long secs = (timesecs - hours * 3600 - minutes * 60);
long millis = time1 % 1000;
Please keep in mind that the above is for display purposes the real difference is in time1.

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How to calculate the % of time difference between different state

Hi there,
The below query returns the follwoign outptut. I need to calculate the % of time period that a specific state ( state ex: open or closed or all report )exists.
I have to find the time difference between the 2 states . How could I do that ?
The first row shows null for the previous state . How could get actual previous state for the first row?
SELECT si.station_name,
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LEFT OUTER JOIN vpproadside.stations_installed si
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STATION_NAME                   STATE_SHORT_NAME STATE_ID               PREVIOUS_STATE         periods in sec         Date
IRDNCST02                      Open             1                    NULL                  85166                  01-mar-2010 23:39:26 pm
IRDNCST02                      All Report       3                      1                      85159                  01-mar-2010 23:39:19 pm
IRDNCMT01                      Closed           2                      3                      81376                  01-mar-2010 22:36:16 pm
IRDNCST02                      Open             1                      2                      78723                  01-mar-2010 21:52:03 pm
IRDNCST02                      All Report       3                      1                      76023                  01-mar-2010 21:07:03 pm
IRDNCMT01                      Open             1                      3                      55922                  01-mar-2010 15:32:02 pm
IRDNCMT01                      Closed           2                      1                      54931                  01-mar-2010 15:15:31 pm
IRDNCHA01                      Closed           2                      2                      41291                  01-mar-2010 11:28:11 am
IRDNCAS01                      Open             1                      2                      38847                  01-mar-2010 10:47:27 am
IRDNCAS01                      All Report       3                      1                      37947                  01-mar-2010 10:32:27 am
IRDNCST02                      Open             1                      3                      35332                  01-mar-2010 09:48:52 am
IRDNCST02                      All Report       3                      1                      32632                  01-mar-2010 09:03:52 am
IRDNCST02                      Open             1                      3                      31502                  01-mar-2010 08:45:02 am
IRDNCST02                      All Report       3                      1                      28802                  01-mar-2010 08:00:02 am
IRDNCHI01                      Open             1                      3                      25368                  01-mar-2010 07:02:48 am
IRDNCHI02                      Open             1                      1                      23939                  01-mar-2010 06:38:59 am
IRDNCMT01                      Open             1                      1                      20696                  01-mar-2010 05:44:56 am
IRDNCCH02                      Open             1                      1                      13452                  01-mar-2010 03:44:12 am
Edited by: Indhu Ram on Mar 11, 2010 1:34 PM
Edited by: Indhu Ram on Mar 11, 2010 2:20 PM

If you look at the table which is output of the given query , there is column called "STATE_ID" It shows the current state ie open or closed or all report.
The column 'PREVIOUS_STATE' shows the state before the current state. .In the table in 2nd row in previous_state column there is state_id = 1 (open)which is the state before 'all report state'

How to measure time difference between zero crossing of a sine wave and rise time of a pulse on a same graph?

I have a 50Hz sine wave and a pulse signal on a same graph. The phase difference between two is between 0-90 degrees.
Now I need to calculate the time difference between (when the sine wave crosses zero volts) and (when the pulse rises). The frequency will stay approximately same for both signals.
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Cheers
Awais
Message Edited by awais.h on 03-30-2010 11:20 PM
Message Edited by awais.h on 03-30-2010 11:21 PM
Solved!
Go to Solution.

Hi
Thanks for the code but I'm afraid it won't work. Like you said the probability of choosing a value that is on both graphs may not happen. This is something that I would like the code to do automatically.
But I did use the previous code posted and made some modifications to it and it seems to work perfectly. Now the next thing is to be able to get just that one value that tells you the first time difference.
Here is what I get using that code.
As you can see from the t Values. I only need the one that is highlighted. If there is a way to filter out the rest it would be great.
I was thinking of a while loop and as soon as the value is higher than 3E-5 it would store the number and stop the loop, but I'm not too familiar with arrays in labview.
Here is the the code modified.
As you can see, it wasn't that big of a modification and it still is your code.
I will keep trying.
Thanks for the help
Attachments:
FinalShockSpeed.vi ‏55 KB

Lost connection detection time difference

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Edited by: SSN on Sep 19, 2008 1:27 AM

Or more clearly (this time I have my date_from and date_to the right way around hehe!)
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Solved!
Go to Solution.
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Hi Bryan!
I made a small VI (in LabVIEW 7.1) that converts to strings (of your format) to timestamp datatype and then subtracts them resulting in a difference measured in seconds. There might be a more optimal way to do this in your application, but I thought I'd at least try to contribute. Also, notice that there is a Y3K bug in there :-)
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Thanks a lot ya..
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Time difference in inlclueding millisenconds

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