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The Java class library has a class named DateTime. DateTime has this method:
int daysBetween(DateTime other) which returns the number of days between this and the parameter. It doesn't have a method
int secondsBetween(DateTime other) which I happen to need. Is there a class which is similar to DateTime but has such a method?
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To get the number of seconds between 2 dates: Get the number of milliseconds between the unix epoch and the Dates. Subtract the milliseconds of the start date from the milliseconds of the end date. Divide the result by the number of milliseconds in a second (1000).
getTime() – d1. getTime(). Use date-time mathematical formula to find the difference between two dates. It returns the years, days, hours, minutes, and seconds between the two specifies dates.
If you'd like to calculate the difference between the timestamps in seconds, multiply the decimal difference in days by the number of seconds in a day, which equals 24 * 60 * 60 = 86400 , or the product of the number of hours in a day, the number of minutes in an hour, and the number of seconds in a minute.
Use the strptime(date_str, format) function to convert a date string into a datetime object as per the corresponding format . To get the difference between two dates, subtract date2 from date1.
Not familiar with DateTime...
If you have two Dates you can call getTime on them to get millseconds, get the diff and divide by 1000. For example
Date d1 = ...; Date d2 = ...; long seconds = (d2.getTime()-d1.getTime())/1000; If you have Calendar objects you can call
c.getTimeInMillis() and do the same
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