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I know this isn't "the way it's supposed to work", but still: If you have two DateTime objects, what's a good way to subtract them? Convert them to Date objects?
DateTime start = new DateTime(); System.out.println(start + " - doing some stuff"); // do stuff DateTime end = new DateTime(); Period diff = // end - start ??? System.out.println(end + " - doing some stuff took diff seconds"); 
719
The minusDays() method of LocalDate class in Java is used to subtract the number of specified day from this LocalDate and return a copy of LocalDate. For example, 2019-01-01 minus one day would result in 2018-12-31. This instance is immutable and unaffected by this method call.
Date diff = new Date(d2. getTime() - d1. getTime()); Here you're computing the differences in milliseconds since the "epoch", and creating a new Date object at an offset from the epoch.
Joda-Time provides a comprehensive formatting system. There are two layers: High level - pre-packaged constant formatters. Mid level - pattern-based, like SimpleDateFormat.
Period has a constructor that takes two ReadableInstant instances:
Period diff = new Period(start, end); (ReadableInstant is an interface implemented by DateTime, as well as other classes.)
123
From your example you seem to want the difference in seconds so this should help :
Seconds diff = Seconds.secondsBetween(start, end); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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