Convert timestamp in milliseconds to string formatted time in Java
JavaDatetimeTimeTimestampEpochJava Problem Overview
I am trying to convert a long value (number of milliseconds elapsed from 1/1/1970 i.e. Epoch) to time of format h:m:s:ms.
The long value I use as timestamp, I get from the field timestamp of a logging event from log4j.
So far I've tried the following and it fails:
logEvent.timeStamp/ (1000*60*60)
TimeUnit.MILLISECONDS.toMinutes(logEvent.timeStamp)
but I get incorrect value:
1289375173771 for logEvent.timeStamp
358159 for logEvent.timeStamp/ (1000*60*60)
21489586 for TimeUnit.MILLISECONDS.toMinutes(logEvent.timeStamp)
How do I go about this?
Java Solutions
Solution 1 - Java
Try this:
Date date = new Date(logEvent.timeSTamp);
DateFormat formatter = new SimpleDateFormat("HH:mm:ss.SSS");
formatter.setTimeZone(TimeZone.getTimeZone("UTC"));
String dateFormatted = formatter.format(date);
See SimpleDateFormat for a description of other format strings that the class accepts.
See runnable example using input of 1200 ms.
Solution 2 - Java
long millis = durationInMillis % 1000;
long second = (durationInMillis / 1000) % 60;
long minute = (durationInMillis / (1000 * 60)) % 60;
long hour = (durationInMillis / (1000 * 60 * 60)) % 24;
String time = String.format("%02d:%02d:%02d.%d", hour, minute, second, millis);
Solution 3 - Java
I'll show you three ways to (a) get the minute field from a long value, and (b) print it using the Date format you want. One uses java.util.Calendar, another uses Joda-Time, and the last uses the java.time framework built into Java 8 and later.
The java.time framework supplants the old bundled date-time classes, and is inspired by Joda-Time, defined by JSR 310, and extended by the ThreeTen-Extra project.
The java.time framework is the way to go when using Java 8 and later. Otherwise, such as Android, use Joda-Time. The java.util.Date/.Calendar classes are notoriously troublesome and should be avoided.
java.util.Date & .Calendar
final long timestamp = new Date().getTime();
// with java.util.Date/Calendar api
final Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(timestamp);
// here's how to get the minutes
final int minutes = cal.get(Calendar.MINUTE);
// and here's how to get the String representation
final String timeString =
new SimpleDateFormat("HH:mm:ss:SSS").format(cal.getTime());
System.out.println(minutes);
System.out.println(timeString);
Joda-Time
// with JodaTime 2.4
final DateTime dt = new DateTime(timestamp);
// here's how to get the minutes
final int minutes2 = dt.getMinuteOfHour();
// and here's how to get the String representation
final String timeString2 = dt.toString("HH:mm:ss:SSS");
System.out.println(minutes2);
System.out.println(timeString2);
Output:
> 24
> 09:24:10:254
> 24
> 09:24:10:254
java.time
long millisecondsSinceEpoch = 1289375173771L;
Instant instant = Instant.ofEpochMilli ( millisecondsSinceEpoch );
ZonedDateTime zdt = ZonedDateTime.ofInstant ( instant , ZoneOffset.UTC );
DateTimeFormatter formatter = DateTimeFormatter.ofPattern ( "HH:mm:ss:SSS" );
String output = formatter.format ( zdt );
System.out.println ( "millisecondsSinceEpoch: " + millisecondsSinceEpoch + " instant: " + instant + " output: " + output );
>millisecondsSinceEpoch: 1289375173771 instant: 2010-11-10T07:46:13.771Z output: 07:46:13:771
Solution 4 - Java
It is possible to use apache commons (commons-lang3) and its DurationFormatUtils class.
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.1</version>
</dependency>
For example:
String formattedDuration = DurationFormatUtils.formatDurationHMS(12313152);
// formattedDuration value is "3:25:13.152"
String otherFormattedDuration = DurationFormatUtils.formatDuration(12313152, DurationFormatUtils.ISO_EXTENDED_FORMAT_PATTERN);
// otherFormattedDuration value is "P0000Y0M0DT3H25M13.152S"
Hope it can help ...
Solution 5 - Java
long second = TimeUnit.MILLISECONDS.toSeconds(millis);
long minute = TimeUnit.MILLISECONDS.toMinutes(millis);
long hour = TimeUnit.MILLISECONDS.toHours(millis);
millis -= TimeUnit.SECONDS.toMillis(second);
return String.format("%02d:%02d:%02d:%d", hour, minute, second, millis);
Solution 6 - Java
public static String timeDifference(long timeDifference1) {
long timeDifference = timeDifference1/1000;
int h = (int) (timeDifference / (3600));
int m = (int) ((timeDifference - (h * 3600)) / 60);
int s = (int) (timeDifference - (h * 3600) - m * 60);
return String.format("%02d:%02d:%02d", h,m,s);
Solution 7 - Java
Try this:
String sMillis = "10997195233";
double dMillis = 0;
int days = 0;
int hours = 0;
int minutes = 0;
int seconds = 0;
int millis = 0;
String sTime;
try {
dMillis = Double.parseDouble(sMillis);
} catch (Exception e) {
System.out.println(e.getMessage());
}
seconds = (int)(dMillis / 1000) % 60;
millis = (int)(dMillis % 1000);
if (seconds > 0) {
minutes = (int)(dMillis / 1000 / 60) % 60;
if (minutes > 0) {
hours = (int)(dMillis / 1000 / 60 / 60) % 24;
if (hours > 0) {
days = (int)(dMillis / 1000 / 60 / 60 / 24);
if (days > 0) {
sTime = days + " days " + hours + " hours " + minutes + " min " + seconds + " sec " + millis + " millisec";
} else {
sTime = hours + " hours " + minutes + " min " + seconds + " sec " + millis + " millisec";
}
} else {
sTime = minutes + " min " + seconds + " sec " + millis + " millisec";
}
} else {
sTime = seconds + " sec " + millis + " millisec";
}
} else {
sTime = dMillis + " millisec";
}
System.out.println("time: " + sTime);
Solution 8 - Java
Doing
logEvent.timeStamp / (1000*60*60)
will give you hours, not minutes. Try:
logEvent.timeStamp / (1000*60)
and you will end up with the same answer as
TimeUnit.MILLISECONDS.toMinutes(logEvent.timeStamp)
Solution 9 - Java
long hours = TimeUnit.MILLISECONDS.toHours(timeInMilliseconds);
long minutes = TimeUnit.MILLISECONDS.toMinutes(timeInMilliseconds - TimeUnit.HOURS.toMillis(hours));
long seconds = TimeUnit.MILLISECONDS.toSeconds(timeInMilliseconds - TimeUnit.HOURS.toMillis(hours) - TimeUnit.MINUTES.toMillis(minutes));
long milliseconds = timeInMilliseconds - TimeUnit.HOURS.toMillis(hours) - TimeUnit.MINUTES.toMillis(minutes) - TimeUnit.SECONDS.toMillis(seconds);
return String.format("%02d:%02d:%02d:%d", hours, minutes, seconds, milliseconds);
Solution 10 - Java
I wanted to only show the relevant part of the time. So, always show seconds, but only show minutes/hours/days if there are any.
Also, optionally show milliseconds.
And I was using GWT, so I couldn't use String.format.
So, if this is you too, here is the code.
public static String formatTimeFromMs(long timeInMs, boolean showMs) {
boolean negative = timeInMs < 0;
timeInMs = Math.abs(timeInMs);
StringBuffer result = new StringBuffer();
long seconds = (timeInMs / 1000) % 60;
long minutes = (timeInMs / (1000 * 60)) % 60;
long hours = (timeInMs / (1000 * 60 * 60)) % 24;
long days = (timeInMs / (1000 * 60 * 60 * 24));
if (days > 0) {
result.append(days + "d ");
}
if (hours > 0) {
if (hours < 10 && result.length() > 0) {
result.append("0");
}
result.append(hours + ":");
}
else if (result.length() > 0) {
result.append("00:");
}
if (minutes > 0) {
if (minutes < 10 && result.length() > 0) {
result.append("0");
}
result.append(minutes + ":");
}
else if (result.length() > 0) {
result.append("00:");
}
if (seconds > 0) {
if (seconds < 10 && result.length() > 0) {
result.append("0");
}
result.append(seconds);
}
else if (result.length() > 0) {
result.append("00");
}
else {
result.append("0");
}
if (showMs) {
long millis = timeInMs % 1000;
if (millis < 10) {
result.append(".00" + millis);
}
else if (millis < 100) {
result.append(".0" + millis);
}
else {
result.append("." + millis);
}
}
if (negative) {
result.insert(0, "-");
}
return result.toString();
}