Sorry for you, there is no equivalent in JSR-310 to JodaTime-Interval-class. I have doubts if this will ever come, but project lead Stephen Colebourne considers at least to support it in the scope of his external library Threeten-Extra, see this issue. If you are happy with JodaTime you should keep it. Not everything in JodaTime … Read more
The answer lies in the documentation for IsoChronology era – There are two eras, ‘Current Era’ (CE) and ‘Before Current Era’ (BCE). year-of-era – The year-of-era is the same as the proleptic-year for the current CE era. For the BCE era before the ISO epoch the year increases from 1 upwards as time goes backwards. … Read more
Not maintaining the order is a property of the Map that stores the result. If you need a specific Map behavior, you need to request a particular Map implementation. E.g. LinkedHashMap maintains the insertion order: groupedResult = people.collect(Collectors.groupingBy( p -> new GroupingKey(p, groupByColumns), LinkedHashMap::new, Collectors.mapping((Map<String, Object> p) -> p, toList()))); By the way, there is … Read more
Most database vendors don’t support JDBC 4.2 yet. This specification says that the new java.time-types like LocalDate will/should be supported using the existing methods setObject(…) and getObject(). No explicit conversion is required and offered (no API-change). A workaround for the missing support can be manual conversion as described on the Derby-mailing list. Something like: LocalDate … Read more