I am struggling to get the unix time epoch with microseconds in this format(1586420933.453254). I tried different classes.
- java.utils.Calendar
- java.time.Instant
- org.joda.time.DateTime
But I am getting only milliseconds like this - 1586420933453
How do I get the unix epoch with microseconds like this 1586420933.453254 in Java.
You can easily do it using standard java time Instant + a number format. Keep in mind the result will be in UTC, though. Here is a draft with current time:
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.time.Instant;
Instant datetime = Instant.now();
// Extract needed information: date time as seconds + fraction of that second
long secondsFromEpoch = datetime.getEpochSecond();
int nanoFromBeginningOfSecond = datetime.getNano();
double nanoAsFraction = datetime.getNano()/1e9;
// Now, let's put that as text
double epochSecondUTCPlusNano = secondsFromEpoch + nanoAsFraction;
NumberFormat format = DecimalFormat.getInstance();
format.setMinimumFractionDigits(6);
format.setMaximumFractionDigits(6);
format.setGroupingUsed(false);
System.out.print(format.format(epochSecondUTCPlusNano));
format.setMinimumFractionDigits(6).
Instantand the relevant methods onSystem. IfInstantisn't providing that resolution, the system clock may not have it. Specify your runtime platform.