How To Format Duration String Like Pt3m33s To Hh:mm:ss

i've been searching StackOverflow's posts about this specific date type, also i've checked on google's search engine to verify the name of this date type. So far what i've learned

Solution 1:

You can use java.time.Duration which is modelled on ISO-8601 standards and was introduced with Java-8 as part of JSR-310 implementation. With Java-9 some more convenience methods were introduced.

If you have gone through the above links, you might have already noticed that PT3M33S specifies a duration of 3 minutes 33 seconds that you can parse to a Duration object and out of this object, you can create a string formatted as per your requirement by getting days, hours, minutes, seconds from it.

Demo:

import java.time.Duration;

publicclassMain {
    publicstaticvoidmain(String[] args) {
        String strIso8601Duration = "PT3M33S";

        Duration duration = Duration.parse(strIso8601Duration);
        // Default formatSystem.out.println(duration);

        // Custom format// ####################################Java-8####################################String formattedElapsedTime = String.format("%02d:%02d:%02d", duration.toHours() % 24,
                duration.toMinutes() % 60, duration.toSeconds() % 60);
        System.out.println(formattedElapsedTime);
        // ##############################################################################// ####################################Java-9####################################
        formattedElapsedTime = String.format("%02d:%02d:%02d", duration.toHoursPart(), duration.toMinutesPart(),
                duration.toSecondsPart());
        System.out.println(formattedElapsedTime);
        // ##############################################################################
    }
}

Output:

PT3M33S
00:03:3300:03:33

Learn about the modern date-time API from Trail: Date Time.

• For any reason, if you have to stick to Java 6 or Java 7, you can use ThreeTen-Backport which backports most of the java.time functionality to Java 6 & 7.
• If you are working for an Android project and your Android API level is still not compliant with Java-8, check Java 8+ APIs available through desugaring and How to use ThreeTenABP in Android Project.