How can I create a Java 8 LocalDate from a long Epoch time in Milliseconds

Question

I have an external API that returns me dates as longs  represented as milliseconds since the beginning of the Epoch   With the old style Java API  I would simply construct a Date from it with  Date myDate   new Date startDateLong    What is the equivalent in Java 8 s LocalDate LocalDateTime classes   I am interested in converting the point in time represented by the long to a LocalDate in my current local timezone

User · Answer

In a specific case where your epoch seconds timestamp comes from SQL or is related to SQL somehow  you can obtain it like this   long startDateLong    lt     gt   LocalDate theDate   new java sql Date startDateLong  toLocalDate

User · Answer

If you have the milliseconds since the Epoch and want to convert them to a local date using the current local timezone  you can use  LocalDate date       Instant ofEpochMilli longValue  atZone ZoneId systemDefault    toLocalDate      but keep in mind that even the system   s default time zone may change  thus the same long value may produce different result in subsequent runs  even on the same machine   Further  keep in mind that LocalDate  unlike java util Date  really represents a date  not a date and time   Otherwise  you may use a LocalDateTime   LocalDateTime date       LocalDateTime ofInstant Instant ofEpochMilli longValue   ZoneId systemDefault

User · Answer

I think I have a better answer    new Timestamp longEpochTime  toLocalDateTime

User · Answer

Timezones and stuff aside  a very simple alternative to new Date startDateLong  could be LocalDate ofEpochDay startDateLong   86400000L

User · Answer

You can start with Instant ofEpochMilli long    LocalDate date     Instant ofEpochMilli startDateLong     atZone ZoneId systemDefault       toLocalDate

User · Answer

replace now getTime   with your long value      GET UTC time for current date         Date now  new Date              LocalDateTime utcDateTimeForCurrentDateTime   Instant ofEpochMilli now getTime    atZone ZoneId of  UTC    toLocalDateTime            LocalDate localDate   Instant ofEpochMilli now getTime    atZone ZoneId of  UTC    toLocalDate            DateTimeFormatter dTF2   DateTimeFormatter ofPattern  yyyy-MM-dd HH mm            System out println   formats as     dTF2 format utcDateTimeForCurrentDateTime

[java] How can I create a Java 8 LocalDate from a long Epoch time in Milliseconds?

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