How to remove milliseconds from LocalTime in java 8

Question

Using the java.time framework, I want to print time in format hh:mm:ss, but LocalTime.now() gives the time in the format hh:mm:ss,nnn. I tried to use DateTimeFormatter:

DateTimeFormatter formatter = DateTimeFormatter.ISO_LOCAL_TIME; LocalTime time = LocalTime.now(); String f = formatter.format(time); System.out.println(f); 

The result:

22:53:51.894 

How can I remove milliseconds from the time?

Answer 1

Edit: I should add that these are nanoseconds not milliseconds.

I feel these answers don't really answer the question using the Java 8 SE Date and Time API as intended. I believe the truncatedTo method is the solution here.

LocalDateTime now = LocalDateTime.now(); System.out.println("Pre-Truncate:  " + now); DateTimeFormatter dtf = DateTimeFormatter.ISO_DATE_TIME; System.out.println("Post-Truncate: " + now.truncatedTo(ChronoUnit.SECONDS).format(dtf)); 

Output:

Pre-Truncate:  2015-10-07T16:40:58.349 Post-Truncate: 2015-10-07T16:40:58 

Alternatively, if using Time Zones:

LocalDateTime now = LocalDateTime.now(); ZonedDateTime zoned = now.atZone(ZoneId.of("America/Denver")); System.out.println("Pre-Truncate:  " + zoned); DateTimeFormatter dtf = DateTimeFormatter.ISO_OFFSET_DATE_TIME; System.out.println("Post-Truncate: " + zoned.truncatedTo(ChronoUnit.SECONDS).format(dtf)); 

Output:

Pre-Truncate:  2015-10-07T16:38:53.900-06:00[America/Denver] Post-Truncate: 2015-10-07T16:38:53-06:00     

Answer 2

cut to minutes:

 localTime.truncatedTo(ChronoUnit.MINUTES); 

cut to seconds:

localTime.truncatedTo(ChronoUnit.SECONDS); 

Example:

import java.time.LocalTime; import java.time.temporal.ChronoUnit;  LocalTime.now()   .truncatedTo(ChronoUnit.SECONDS)   .format(DateTimeFormatter.ISO_LOCAL_TIME); 

Outputs 15:07:25