The finest practice because that this, in my opinion is:
TimeUnit.DAYS.toMillis(1); // 1 day to milliseconds.TimeUnit.MINUTES.toMillis(23); // 23 minute to milliseconds.TimeUnit.HOURS.toMillis(4); // 4 hours to milliseconds.TimeUnit.SECONDS.toMillis(96); // 96 secs to milliseconds.
In addition to the other answers, there is additionally the TimeUnit course which enables you to convert one time duration come another. Because that example, to find out how numerous milliseconds consist of one day:
TimeUnit.MILLISECONDS.convert(1, TimeUnit.DAYS); //gives 86400000Note that this an approach takes a long, for this reason if you have a portion of a day, girlfriend will have to multiply the by the number of milliseconds in one day.
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Its essential to cite that as soon as in 4-5 year this technique might provide a 1 second error, becase that a leap-second (http://www.nist.gov/pml/div688/leapseconds.cfm), and the correct formula for the day would be
(24*60*60 + 1) * 1000There is a concern Are leap seconds catered because that by Calendar? and the answer is no.
So, if You\"re designing super time-dependant software, be careful around this formula.
public static dual toMilliSeconds(double day) return day * 24 * 60 * 60 * 1000;or together long:
public static long toMilliSeconds(double day) return (long) (day * 24 * 60 * 60 * 1000);
You can use this utility course -
public course DateUtils public static final long SECOND_IN_MILLIS = 1000; public static final long MINUTE_IN_MILLIS = SECOND_IN_MILLIS * 60; publicly static final long HOUR_IN_MILLIS = MINUTE_IN_MILLIS * 60; public static final long DAY_IN_MILLIS = HOUR_IN_MILLIS * 24; public static final long WEEK_IN_MILLIS = DAY_IN_MILLIS * 7;If you are working ~ above Android framework then simply import the (also called DateUtils) under parcel android.text.format
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