How do I get difference between two dates in android with millisec? - java

My SimpleDateFormat format is "HH:mm:ss.SSS"
My example time: "00:01:20.442"
How to get (extract) milliseconds 442 to string?
I found code:
long diff = date1.getTime() - date2.getTime();
long mseconds = ?????????;
long seconds = diff / 1000;
long minutes = seconds / 60;
long hours = minutes / 60;
long days = hours / 24;
System.out.println("Milliseconds : "+ String.valueOf(mseconds));
P.S. I'm use API 19 (Adroid 4.4.2)


You take the remainder of dividing by 1000, using the remainder operator:
long mseconds = diff % 1000;
But note that the milliseconds value you've asked for (442) doesn't match what you're doing to get seconds, minutes, etc. In seconds, you'll get the total number of seconds between the dates, which could be in the hundreds of thousands depending on the dates, not just 0-59.
If the goal is to get days, hours (within the day), minutes (within the hour), etc., then:
long mseconds = diff % 1000;
long seconds = (diff / 1000) % 60;
long minutes = (seconds / 60) % 60;
long hours = (minutes / 60) % 24;
long days = hours / 24;


Using the Joda Time library (which in my opinion should be in every project that uses time):
final long millis = DateTime.parse("00:01:20.442", DateTimeFormat.forPattern("HH:mm:ss.SSS")).getMillisOfSecond();
assertEquals(442, millis);
Or, if you want all of them:
final DateTime dt = DateTime.parse("00:01:20.442", DateTimeFormat.forPattern("HH:mm:ss.SSS"));
final long millis = dt.getMillisOfSecond(); //442
final long second = dt.getSecondOfMinute(); //20
final long min = dt.getMinuteOfHour(); //1
final long hour = dt.getHourOfDay(); //0


Why don't you simply split the String by . and use the second element?
Like:
long millis = Long.parseLong(dateStr.split(".")[1]);
Where dateStr is a String of form HH:mm:ss.SSS.
It is much better solution than using a 3rd party library for simple task.

Related

How to convert Milliseconds to Minutes and Seconds [duplicate]

I have looked through previous questions, but none had the answer I was looking for.
How do I convert milliseconds from a StopWatch method to Minutes and Seconds?
I have:
watch.start();
to start the stopwatch and
watch.stop();
to stop the watch. I later have
watch.getTime();
which returns Milliseconds. I want it to return in Seconds and Minutes. How do I go about doing so? I'm looking for a way to do it without multiplying/dividing by 1000 but rather a method that will make the whole computation more readable and less error-prone.

I would suggest using TimeUnit. You can use it like this:
long minutes = TimeUnit.MILLISECONDS.toMinutes(millis);
long seconds = TimeUnit.MILLISECONDS.toSeconds(millis);

After converting millis to seconds (by dividing by 1000), you can use / 60 to get the minutes value, and % 60 (remainder) to get the "seconds in minute" value.
long millis = .....; // obtained from StopWatch
long minutes = (millis / 1000) / 60;
int seconds = (int)((millis / 1000) % 60);

tl;dr
Duration d = Duration.ofMillis( … ) ;
int minutes = d.toMinutesPart() ;
int seconds = d.toSecondsPart() ;
Java 9 and later
In Java 9 and later, create a Duration and call the to…Part methods. In this case: toMinutesPart and toSecondsPart.
Capture the start & stop of your stopwatch.
Instant start = Instant.now();
…
Instant stop = Instant.now();
Represent elapsed time in a Duration object.
Duration d = Duration.between( start , stop );
Interrogate for each part, the minutes and the seconds.
int minutes = d.toMinutesPart();
int seconds = d.toSecondsPart();
You might also want to see if your stopwatch ran expectedly long.
Boolean ranTooLong = ( d.toDaysPart() > 0 ) || ( d.toHoursPart() > 0 ) ;
Java 8
In Java 8, the Duration class lacks to…Part methods. You will need to do math as shown in the other Answers.
long entireDurationAsSeconds = d.getSeconds();
Or let Duration do the math.
long minutesPart = d.toMinutes();
long secondsPart = d.minusMinutes( minutesPart ).getSeconds() ;
See live code in IdeOne.com.
Interval: 2016-12-18T08:39:34.099Z/2016-12-18T08:41:49.099Z
d.toString(): PT2M15S
d.getSeconds(): 135
Elapsed: 2M 15S
Resolution
FYI, the resolution of now methods changed between Java 8 and Java 9. See this Question.
Java 9 captures the moment with a resolution as fine as nanoseconds. Resolution depends on capability of your computer’s hardware. I see microseconds (six digits of decimal fraction) on MacBook Pro Retina with macOS Sierra.
Java 8 captures the moment only up to milliseconds. The implementation of Clock is limited to a resolution of milliseconds. So you can store values in nanoseconds but only capture them in milliseconds.
About java.time
The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date, Calendar, & SimpleDateFormat.
To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.
The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.
You may exchange java.time objects directly with your database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.* classes.
Where to obtain the java.time classes?
Java SE 8, Java SE 9, Java SE 10, Java SE 11, and later - Part of the standard Java API with a bundled implementation.
Java 9 adds some minor features and fixes.
Java SE 6 and Java SE 7
Most of the java.time functionality is back-ported to Java 6 & 7 in ThreeTen-Backport.
Android
Later versions of Android bundle implementations of the java.time classes.
For earlier Android (<26), the ThreeTenABP project adapts ThreeTen-Backport (mentioned above). See How to use ThreeTenABP….

I was creating a mp3 player app for android, so I did it like this to get current time and duration
private String millisecondsToTime(long milliseconds) {
long minutes = (milliseconds / 1000) / 60;
long seconds = (milliseconds / 1000) % 60;
String secondsStr = Long.toString(seconds);
String secs;
if (secondsStr.length() >= 2) {
secs = secondsStr.substring(0, 2);
} else {
secs = "0" + secondsStr;
}
return minutes + ":" + secs;
}

This is just basic math.
1000 milliseconds=1 second and 60000 milliseconds = 1 minute;
So just do,
int seconds=(millis/1000)%60;
long minutes=((millis-seconds)/1000)/60;

public static String getIntervalTime(long longInterval) {
long intMillis = longInterval;
long dd = TimeUnit.MILLISECONDS.toDays(intMillis);
long daysMillis = TimeUnit.DAYS.toMillis(dd);
intMillis -= daysMillis;
long hh = TimeUnit.MILLISECONDS.toHours(intMillis);
long hoursMillis = TimeUnit.HOURS.toMillis(hh);
intMillis -= hoursMillis;
long mm = TimeUnit.MILLISECONDS.toMinutes(intMillis);
long minutesMillis = TimeUnit.MINUTES.toMillis(mm);
intMillis -= minutesMillis;
long ss = TimeUnit.MILLISECONDS.toSeconds(intMillis);
long secondsMillis = TimeUnit.SECONDS.toMillis(ss);
intMillis -= secondsMillis;
String stringInterval = "%02d days - %02d:%02d:%02d.%03d";
return String.format(stringInterval , dd, hh, mm, ss, intMillis);
}
Shorter Form!
public static String getIntervalTime(long longInterval) {
long intMillis = longInterval;
long dd = TimeUnit.MILLISECONDS.toDays(intMillis);
intMillis -= TimeUnit.DAYS.toMillis(dd);
long hh = TimeUnit.MILLISECONDS.toHours(intMillis);
intMillis -= TimeUnit.HOURS.toMillis(hh);
long mm = TimeUnit.MILLISECONDS.toMinutes(intMillis);
intMillis -= TimeUnit.MINUTES.toMillis(mm);
long ss = TimeUnit.MILLISECONDS.toSeconds(intMillis);
intMillis -= TimeUnit.SECONDS.toMillis(ss);
String stringInterval = "%02d days - %02d:%02d:%02d.%03d";
return String.format(stringInterval , dd, hh, mm, ss, intMillis);
}
Testing
long delay = 1000*60*20 + 1000*5 + 10;
LOGGER.log(Level.INFO, "Delay Expected {0}", getIntervalTime(delay));
Output
INFO: Delay Expected 00 days - 00:20:05.010

To convert time in millis directly to minutes: second format you can use this
String durationText = DateUtils.formatElapsedTime(timeInMillis / 1000));
This will return a string with time in proper formatting.
It worked for me.

X milliseconds = X / 1000 seconds = (X / 1000) / 60 minutes
If you have 100,000 milliseconds, divide this value by 1,000 and you're left with 100 seconds. Now 100 / 60 = 1.666~ minutes, but fractional minutes have no value, so: do 100 % 60 = 40 seconds to find the remainder, then integer division 100 / 60 = 1 minute, with 40 seconds remainder. Answer: 1 minute, 40 seconds.

Here is the full program
import java.util.concurrent.TimeUnit;
public class Milliseconds {
public static void main(String[] args) {
long milliseconds = 1000000;
// long minutes = (milliseconds / 1000) / 60;
long minutes = TimeUnit.MILLISECONDS.toMinutes(milliseconds);
// long seconds = (milliseconds / 1000);
long seconds = TimeUnit.MILLISECONDS.toSeconds(milliseconds);
System.out.format("%d Milliseconds = %d minutes\n", milliseconds, minutes );
System.out.println("Or");
System.out.format("%d Milliseconds = %d seconds", milliseconds, seconds );
}
}
I found this program here "Link" there it is explained in detail.

I need to convert millisecond to minute and second for timer so I used this code.
private String getTime(long millisecond) {
long min = TimeUnit.MILLISECONDS.toMinutes(millisecond);
long sec = TimeUnit.MILLISECONDS.toSeconds(millisecond) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisecond));
String time = min + ":" + sec;
return time;
}
for revers, each minute equals 60,000 millisecond and each second equals 1000 millisecond. So :
long millisecond = minutes * 60000;
long millisecond = seconds * 1000;
or
long millisecond = TimeUnit.SECONDS.toMillis(seconds);

To get actual hour, minute and seconds as appear on watch try this code
val sec = (milliSec/1000) % 60
val min = ((milliSec/1000) / 60) % 60
val hour = ((milliSec/1000) / 60) / 60

You can try proceeding this way:
Pass ms value from
Long ms = watch.getTime();
to
getDisplayValue(ms)
Kotlin implementation:
fun getDisplayValue(ms: Long): String {
val duration = Duration.ofMillis(ms)
val minutes = duration.toMinutes()
val seconds = duration.minusMinutes(minutes).seconds
return "${minutes}min ${seconds}sec"
}
Java implementation:
public String getDisplayValue(Long ms) {
Duration duration = Duration.ofMillis(ms);
Long minutes = duration.toMinutes();
Long seconds = duration.minusMinutes(minutes).getSeconds();
return minutes + "min " + seconds "sec"
}

I don't think Java 1.5 support concurrent TimeUnit. Otherwise, I would suggest for TimeUnit. Below is based on pure math approach.
stopWatch.stop();
long milliseconds = stopWatch.getTime();
int seconds = (int) ((milliseconds / 1000) % 60);
int minutes = (int) ((milliseconds / 1000) / 60);

You can easily convert miliseconds into seconds, minutes and hours.
val millis = **milliSecondsYouWantToConvert**
val seconds = (millis / 1000) % 60
val minutes = ((millis / 1000) / 60) % 60
val hours = ((millis / 1000) / 60) / 60
println("--------------------------------------------------------------------")
println(String.format("%02dh : %02dm : %02ds remaining", hours, minutes, seconds))
println("--------------------------------------------------------------------")
**RESULT :**
--------------------------------------------------------------------
01h : 23m : 37s remaining
--------------------------------------------------------------------

Below code does the work for converting ms to min:secs with [m:ss] format
int seconds;
int minutes;
String Sec;
long Mills = ...; // Milliseconds goes here
minutes = (int)(Mills / 1000) / 60;
seconds = (int)((Mills / 1000) % 60);
Sec = seconds+"";
TextView.setText(minutes+":"+Sec);//Display duration [3:40]

You can convert milliseconds to hours, minutes and seconds using this method
public String timeConversion(Long millie) {
if (millie != null) {
long seconds = (millie / 1000);
long sec = seconds % 60;
long min = (seconds / 60) % 60;
long hrs = (seconds / (60 * 60)) % 24;
if (hrs > 0) {
return String.format("%02d:%02d:%02d", hrs, min, sec);
} else {
return String.format("%02d:%02d", min, sec);
}
} else {
return null;
}
}
then use this method like this
videoDuration.setText(timeConversion((long) milliSecondsHere));
In Kotlin
fun timeConverter(millie: Long): String {
return run {
val seconds: Long = millie / 2000
val sec = seconds % 60
val min = seconds / 60 % 60
val hrs = seconds / (60 * 60) % 24
return if (hrs > 0) {
String.format("%02d:%02d:%02d", hrs, min, sec)
} else {
String.format("%02d:%02d", min, sec)
}
}

package com.v3mobi.userpersistdatetime;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;
import java.util.Date;
import java.util.concurrent.TimeUnit;
public class UserActivity extends AppCompatActivity {
Date startDate;
Date endDate;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user);
startDate = java.util.Calendar.getInstance().getTime(); //set your start time
}
#Override
protected void onStop() {
super.onStop();
endDate = java.util.Calendar.getInstance().getTime(); // set your end time
chekUserPersistence();
}
private void chekUserPersistence()
{
long duration = endDate.getTime() - startDate.getTime();
// long duration = 301000;
long diffInMinutes = TimeUnit.MILLISECONDS.toMinutes(duration); // minutes ok
long secs = (duration/1000) % 60; // minutes ok
Toast.makeText(UserActivity.this, "Diff "
+ diffInMinutes + " : "+ secs , Toast.LENGTH_SHORT).show();
System.out.println("Diff " + diffInMinutes +" : "+ secs );
Log.e("keshav","diffInMinutes -->" +diffInMinutes);
Log.e("keshav","secs -->" +secs);
finish();
}
}

Apache Commons Lang class DurationFormatUtils. This class has some standard formats out of the box but also supports custom formats.
String result = DurationFormatUtils.formatDuration(millis, "mm:ss.SSS' sec.'");

This is related to a previous post, but in my opinion the solution proposed wasn't quite right.
In order to realize a correct conversion, this is what should be implemnted:
long time_millis = 1926546
int minutes = time_millis / 1000 / 60
int seconds = ((int)(time_millis / 1000) % 60) #important that this division is cast to an int
println "Build time: $minutes minutes $seconds seconds"

Here is a simple solution.
Example calls that could be used in any method:
StopWatch.start();
StopWatch.stop();
StopWatch.displayDiff(); displays difference in minutes and seconds between start and stop. (elapsed time)
import java.time.Duration;
import java.time.Instant;
public class StopWatch {
private static Instant start;
private static Instant stop;
private void StopWatch() {
// not called
}
public static void start() {
start = Instant.now();
}
public static void stop() {
stop = Instant.now();
}
public static void displayDiff() {
Duration totalTime = Duration.between(start, stop);
System.out.println(totalTime.toMinutes() + " Minutes "
+ totalTime.toMillis() / 1000 + " Seconds");
}
}

Converting Milliseconds to Minutes and Seconds?

I have looked through previous questions, but none had the answer I was looking for.
How do I convert milliseconds from a StopWatch method to Minutes and Seconds?
I have:
watch.start();
to start the stopwatch and
watch.stop();
to stop the watch. I later have
watch.getTime();
which returns Milliseconds. I want it to return in Seconds and Minutes. How do I go about doing so? I'm looking for a way to do it without multiplying/dividing by 1000 but rather a method that will make the whole computation more readable and less error-prone.

I would suggest using TimeUnit. You can use it like this:
long minutes = TimeUnit.MILLISECONDS.toMinutes(millis);
long seconds = TimeUnit.MILLISECONDS.toSeconds(millis);

After converting millis to seconds (by dividing by 1000), you can use / 60 to get the minutes value, and % 60 (remainder) to get the "seconds in minute" value.
long millis = .....; // obtained from StopWatch
long minutes = (millis / 1000) / 60;
int seconds = (int)((millis / 1000) % 60);

tl;dr
Duration d = Duration.ofMillis( … ) ;
int minutes = d.toMinutesPart() ;
int seconds = d.toSecondsPart() ;
Java 9 and later
In Java 9 and later, create a Duration and call the to…Part methods. In this case: toMinutesPart and toSecondsPart.
Capture the start & stop of your stopwatch.
Instant start = Instant.now();
…
Instant stop = Instant.now();
Represent elapsed time in a Duration object.
Duration d = Duration.between( start , stop );
Interrogate for each part, the minutes and the seconds.
int minutes = d.toMinutesPart();
int seconds = d.toSecondsPart();
You might also want to see if your stopwatch ran expectedly long.
Boolean ranTooLong = ( d.toDaysPart() > 0 ) || ( d.toHoursPart() > 0 ) ;
Java 8
In Java 8, the Duration class lacks to…Part methods. You will need to do math as shown in the other Answers.
long entireDurationAsSeconds = d.getSeconds();
Or let Duration do the math.
long minutesPart = d.toMinutes();
long secondsPart = d.minusMinutes( minutesPart ).getSeconds() ;
See live code in IdeOne.com.
Interval: 2016-12-18T08:39:34.099Z/2016-12-18T08:41:49.099Z
d.toString(): PT2M15S
d.getSeconds(): 135
Elapsed: 2M 15S
Resolution
FYI, the resolution of now methods changed between Java 8 and Java 9. See this Question.
Java 9 captures the moment with a resolution as fine as nanoseconds. Resolution depends on capability of your computer’s hardware. I see microseconds (six digits of decimal fraction) on MacBook Pro Retina with macOS Sierra.
Java 8 captures the moment only up to milliseconds. The implementation of Clock is limited to a resolution of milliseconds. So you can store values in nanoseconds but only capture them in milliseconds.
About java.time
The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date, Calendar, & SimpleDateFormat.
To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.
The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.
You may exchange java.time objects directly with your database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.* classes.
Where to obtain the java.time classes?
Java SE 8, Java SE 9, Java SE 10, Java SE 11, and later - Part of the standard Java API with a bundled implementation.
Java 9 adds some minor features and fixes.
Java SE 6 and Java SE 7
Most of the java.time functionality is back-ported to Java 6 & 7 in ThreeTen-Backport.
Android
Later versions of Android bundle implementations of the java.time classes.
For earlier Android (<26), the ThreeTenABP project adapts ThreeTen-Backport (mentioned above). See How to use ThreeTenABP….

I was creating a mp3 player app for android, so I did it like this to get current time and duration
private String millisecondsToTime(long milliseconds) {
long minutes = (milliseconds / 1000) / 60;
long seconds = (milliseconds / 1000) % 60;
String secondsStr = Long.toString(seconds);
String secs;
if (secondsStr.length() >= 2) {
secs = secondsStr.substring(0, 2);
} else {
secs = "0" + secondsStr;
}
return minutes + ":" + secs;
}

This is just basic math.
1000 milliseconds=1 second and 60000 milliseconds = 1 minute;
So just do,
int seconds=(millis/1000)%60;
long minutes=((millis-seconds)/1000)/60;

public static String getIntervalTime(long longInterval) {
long intMillis = longInterval;
long dd = TimeUnit.MILLISECONDS.toDays(intMillis);
long daysMillis = TimeUnit.DAYS.toMillis(dd);
intMillis -= daysMillis;
long hh = TimeUnit.MILLISECONDS.toHours(intMillis);
long hoursMillis = TimeUnit.HOURS.toMillis(hh);
intMillis -= hoursMillis;
long mm = TimeUnit.MILLISECONDS.toMinutes(intMillis);
long minutesMillis = TimeUnit.MINUTES.toMillis(mm);
intMillis -= minutesMillis;
long ss = TimeUnit.MILLISECONDS.toSeconds(intMillis);
long secondsMillis = TimeUnit.SECONDS.toMillis(ss);
intMillis -= secondsMillis;
String stringInterval = "%02d days - %02d:%02d:%02d.%03d";
return String.format(stringInterval , dd, hh, mm, ss, intMillis);
}
Shorter Form!
public static String getIntervalTime(long longInterval) {
long intMillis = longInterval;
long dd = TimeUnit.MILLISECONDS.toDays(intMillis);
intMillis -= TimeUnit.DAYS.toMillis(dd);
long hh = TimeUnit.MILLISECONDS.toHours(intMillis);
intMillis -= TimeUnit.HOURS.toMillis(hh);
long mm = TimeUnit.MILLISECONDS.toMinutes(intMillis);
intMillis -= TimeUnit.MINUTES.toMillis(mm);
long ss = TimeUnit.MILLISECONDS.toSeconds(intMillis);
intMillis -= TimeUnit.SECONDS.toMillis(ss);
String stringInterval = "%02d days - %02d:%02d:%02d.%03d";
return String.format(stringInterval , dd, hh, mm, ss, intMillis);
}
Testing
long delay = 1000*60*20 + 1000*5 + 10;
LOGGER.log(Level.INFO, "Delay Expected {0}", getIntervalTime(delay));
Output
INFO: Delay Expected 00 days - 00:20:05.010

To convert time in millis directly to minutes: second format you can use this
String durationText = DateUtils.formatElapsedTime(timeInMillis / 1000));
This will return a string with time in proper formatting.
It worked for me.

X milliseconds = X / 1000 seconds = (X / 1000) / 60 minutes
If you have 100,000 milliseconds, divide this value by 1,000 and you're left with 100 seconds. Now 100 / 60 = 1.666~ minutes, but fractional minutes have no value, so: do 100 % 60 = 40 seconds to find the remainder, then integer division 100 / 60 = 1 minute, with 40 seconds remainder. Answer: 1 minute, 40 seconds.

Here is the full program
import java.util.concurrent.TimeUnit;
public class Milliseconds {
public static void main(String[] args) {
long milliseconds = 1000000;
// long minutes = (milliseconds / 1000) / 60;
long minutes = TimeUnit.MILLISECONDS.toMinutes(milliseconds);
// long seconds = (milliseconds / 1000);
long seconds = TimeUnit.MILLISECONDS.toSeconds(milliseconds);
System.out.format("%d Milliseconds = %d minutes\n", milliseconds, minutes );
System.out.println("Or");
System.out.format("%d Milliseconds = %d seconds", milliseconds, seconds );
}
}
I found this program here "Link" there it is explained in detail.

I need to convert millisecond to minute and second for timer so I used this code.
private String getTime(long millisecond) {
long min = TimeUnit.MILLISECONDS.toMinutes(millisecond);
long sec = TimeUnit.MILLISECONDS.toSeconds(millisecond) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisecond));
String time = min + ":" + sec;
return time;
}
for revers, each minute equals 60,000 millisecond and each second equals 1000 millisecond. So :
long millisecond = minutes * 60000;
long millisecond = seconds * 1000;
or
long millisecond = TimeUnit.SECONDS.toMillis(seconds);

To get actual hour, minute and seconds as appear on watch try this code
val sec = (milliSec/1000) % 60
val min = ((milliSec/1000) / 60) % 60
val hour = ((milliSec/1000) / 60) / 60

You can try proceeding this way:
Pass ms value from
Long ms = watch.getTime();
to
getDisplayValue(ms)
Kotlin implementation:
fun getDisplayValue(ms: Long): String {
val duration = Duration.ofMillis(ms)
val minutes = duration.toMinutes()
val seconds = duration.minusMinutes(minutes).seconds
return "${minutes}min ${seconds}sec"
}
Java implementation:
public String getDisplayValue(Long ms) {
Duration duration = Duration.ofMillis(ms);
Long minutes = duration.toMinutes();
Long seconds = duration.minusMinutes(minutes).getSeconds();
return minutes + "min " + seconds "sec"
}

I don't think Java 1.5 support concurrent TimeUnit. Otherwise, I would suggest for TimeUnit. Below is based on pure math approach.
stopWatch.stop();
long milliseconds = stopWatch.getTime();
int seconds = (int) ((milliseconds / 1000) % 60);
int minutes = (int) ((milliseconds / 1000) / 60);

You can easily convert miliseconds into seconds, minutes and hours.
val millis = **milliSecondsYouWantToConvert**
val seconds = (millis / 1000) % 60
val minutes = ((millis / 1000) / 60) % 60
val hours = ((millis / 1000) / 60) / 60
println("--------------------------------------------------------------------")
println(String.format("%02dh : %02dm : %02ds remaining", hours, minutes, seconds))
println("--------------------------------------------------------------------")
**RESULT :**
--------------------------------------------------------------------
01h : 23m : 37s remaining
--------------------------------------------------------------------

Below code does the work for converting ms to min:secs with [m:ss] format
int seconds;
int minutes;
String Sec;
long Mills = ...; // Milliseconds goes here
minutes = (int)(Mills / 1000) / 60;
seconds = (int)((Mills / 1000) % 60);
Sec = seconds+"";
TextView.setText(minutes+":"+Sec);//Display duration [3:40]

You can convert milliseconds to hours, minutes and seconds using this method
public String timeConversion(Long millie) {
if (millie != null) {
long seconds = (millie / 1000);
long sec = seconds % 60;
long min = (seconds / 60) % 60;
long hrs = (seconds / (60 * 60)) % 24;
if (hrs > 0) {
return String.format("%02d:%02d:%02d", hrs, min, sec);
} else {
return String.format("%02d:%02d", min, sec);
}
} else {
return null;
}
}
then use this method like this
videoDuration.setText(timeConversion((long) milliSecondsHere));
In Kotlin
fun timeConverter(millie: Long): String {
return run {
val seconds: Long = millie / 2000
val sec = seconds % 60
val min = seconds / 60 % 60
val hrs = seconds / (60 * 60) % 24
return if (hrs > 0) {
String.format("%02d:%02d:%02d", hrs, min, sec)
} else {
String.format("%02d:%02d", min, sec)
}
}

package com.v3mobi.userpersistdatetime;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;
import java.util.Date;
import java.util.concurrent.TimeUnit;
public class UserActivity extends AppCompatActivity {
Date startDate;
Date endDate;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user);
startDate = java.util.Calendar.getInstance().getTime(); //set your start time
}
#Override
protected void onStop() {
super.onStop();
endDate = java.util.Calendar.getInstance().getTime(); // set your end time
chekUserPersistence();
}
private void chekUserPersistence()
{
long duration = endDate.getTime() - startDate.getTime();
// long duration = 301000;
long diffInMinutes = TimeUnit.MILLISECONDS.toMinutes(duration); // minutes ok
long secs = (duration/1000) % 60; // minutes ok
Toast.makeText(UserActivity.this, "Diff "
+ diffInMinutes + " : "+ secs , Toast.LENGTH_SHORT).show();
System.out.println("Diff " + diffInMinutes +" : "+ secs );
Log.e("keshav","diffInMinutes -->" +diffInMinutes);
Log.e("keshav","secs -->" +secs);
finish();
}
}

Apache Commons Lang class DurationFormatUtils. This class has some standard formats out of the box but also supports custom formats.
String result = DurationFormatUtils.formatDuration(millis, "mm:ss.SSS' sec.'");

This is related to a previous post, but in my opinion the solution proposed wasn't quite right.
In order to realize a correct conversion, this is what should be implemnted:
long time_millis = 1926546
int minutes = time_millis / 1000 / 60
int seconds = ((int)(time_millis / 1000) % 60) #important that this division is cast to an int
println "Build time: $minutes minutes $seconds seconds"

Here is a simple solution.
Example calls that could be used in any method:
StopWatch.start();
StopWatch.stop();
StopWatch.displayDiff(); displays difference in minutes and seconds between start and stop. (elapsed time)
import java.time.Duration;
import java.time.Instant;
public class StopWatch {
private static Instant start;
private static Instant stop;
private void StopWatch() {
// not called
}
public static void start() {
start = Instant.now();
}
public static void stop() {
stop = Instant.now();
}
public static void displayDiff() {
Duration totalTime = Duration.between(start, stop);
System.out.println(totalTime.toMinutes() + " Minutes "
+ totalTime.toMillis() / 1000 + " Seconds");
}
}

How can I convert elapsed milliseconds stored in a long to a String formatted to mm:ss.ss in Java?

I have a variable currTime computed in the following way:
long currTime = System.currentTimeMillis() - start; //where start is the start time of whatever I'm timing
How do I convert this to a String for display such that for example:
12544 will display as "00:12.54"
67855 will display as "01:07.86"
...so on and so forth...?

The easiest, I think, is to do it by hand:
public String elapsedToString(long elapsedTimeMillis) {
long seconds = (elapsedTimeMillis + 500) / 1000; // round
long minutes = seconds / 60;
long hours = minutes / 60;
return String.format("%1$02d:%2$02d:%3$02d",
hours,
minutes % 60,
seconds % 60);
}
Oops. You wanted mm:ss.ss
public String elapsedToString(long elapsedTimeMillis) {
long hundredths = (elapsedTimeMillis + 5) / 10; // round
long seconds = hundredths / 100;
long minutes = seconds / 60;
return String.format("%1$02d:%2$02d.%3$02d",
minutes,
seconds % 60,
hundredths % 100);
}

A solution for three digit milliseconds is very easy:
public String formatDuration(long elapsedTimeMillis) {
SimpleDateFormat df = new java.text.SimpleDateFormat("mm:ss.SSS");
df.setTimeZone(TimeZone.getTimeZone("UTC")); // Epoch is UTC
return df.format(new Date(elapsedTimeMillis));
}
For two digit milliseconds, one has to use Joda Time formatter, remove the final digit from the string or go for a manual solution.
See:
Java DateFormat for 2 millisecond precision

I'm making a countdown for android, but I can't realize how to create it

Date lol = c.getTime();
long milli_now = lol.getTime();
c.set(2013, c.MAY, 21);
Date lol1 = c.getTime();
long milli_then = lol1.getTime();
long milli_tot = (milli_then - milli_now);
long sec = (milli_tot/1000);
long min = 0;
long hour = 0;
min = (sec/60);
days.setText("Days left: " + (sec/60/60/24));
countdown.setText(""+hour+":"+min+":"+sec);
What should I do to have it like 216 hours, 60 mins, 60 secs?
I can't figure out the algorithm.

Here is what you can do:
long totDiff = (lastDate.getTime() - firstDate.getTime()); // Total differance in milliseconds
long Sdiff = (totDiff / 1000) % 60; // Differance in seconds
long Mdiff = (totDiff / (60 * 1000)) %60; // Differance in minutes
long Hdiff = (totDiff / (60 * 60 * 1000)); // Remaining time in hours
This should give you the output you're looking for.

What are you getting with this code? As far as I can tell, the only thing you're missing is
hour = min / 60;

Java dates difference in milliseconds

I've written the following code, but I always just get...
4838399999
Seconds is : 59
Minutes is : 59
Hours is : 23
Days is : 7
Calendar xmas = Calendar.getInstance();
final Calendar now = Calendar.getInstance();
xmas.set(Calendar.YEAR, 2011);
xmas.set(Calendar.MONTH, Calendar.DECEMBER);
xmas.set(Calendar.DAY_OF_MONTH, 25);
long milliseconds1 = now.getTimeInMillis();
long milliseconds2 = xmas.getTimeInMillis();
long diff = milliseconds2 - milliseconds1;
System.out.println(diff);
diff = diff / 1000;
final long diffSeconds = diff % 60;
System.out.println("Seconds is : " + diffSeconds);
diff = diff / 60;
final long diffMinutes = diff % 60;
System.out.println("Minutes is : " + diffMinutes);
diff = diff / 60;
final long diffHours = diff % 60;
System.out.println("Hours is : " + diffHours);
diff = diff / 24;
final long diffDays = diff % 24;
System.out.println("Days is : " + diffDays);
Can anyone see anything wrong with this logic to find the days, hours, minutes and seconds till xmas?

When you do:
diff = diff / 1000;
you're permanently losing the remainder. It should be something like:
long seconds = diff / 1000; // seconds is milliseconds / 1000
long milliseconds = diff % 1000; // remainder is milliseconds that are not composing seconds.
long minutes = seconds / 60;
seconds = seconds % 60;
long hours = minutes / 60;
minutes = minutes % 60;
The same pattern of the last four continues.

These two lines are wrong:
final long diffHours = diff % 60
final long diffDays = diff % 24;
Also, you're not setting the hours/minutes/seconds/milliseconds on xmas, so it gets the hours, minutes, and seconds from the current time. For example, if you run the program at 4:30:20 AM, then it will give you the time until 4:30:20 AM on Christmas. You probably want the time until 00:00:00 on Christmas.

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