CODEWITHSUNDEEP
javajava-8epochlocaldate
The-Proton-Resurgence
The-Proton-Resurgence

Reputation: 818

java.time.DateTimeException: Invalid value for Year (valid values -999999999 - 999999999)

I am getting this exception when I am trying to convert epochTime to LocalDate where:

1) Date : 2017-05-05 10:08:52.0

2) corresponding epoch :1493959132000

LocalDate lastUpdatedDate = LocalDate.ofEpochDay(1493959132000);

Exception :

java.time.DateTimeException: Invalid value for Year (valid values -999999999 - 999999999): 4090323145
    at java.time.temporal.ValueRange.checkValidIntValue(ValueRange.java:330)
    at java.time.temporal.ChronoField.checkValidIntValue(ChronoField.java:722)
    at java.time.LocalDate.ofEpochDay(LocalDate.java:341)

I understand that the sourcecode of java.time.LocalDate gives a prior warning of this exception at https://docs.oracle.com/javase/8/docs/api/java/time/LocalDate.html#ofEpochDay-long-

What does this actually mean and when does it come?

Upvotes: 0

Views: 13957

Answers (3)

Eddie
Eddie

Reputation: 77

You are using the timeInMillis as the value instead of number of days. You could use the Duration class to calculate the number of days.

Duration duration = Duration.ofMillis(1493959132000);
long days = duration.toDays();
LocalDate lastUpdatedDate = LocalDate.ofEpochDay(days);

Upvotes: 0

flup
flup

Reputation: 27104

If you think about it, it doesn't make sense convert epoch seconds to local dates. At a specific moment in time you still need a location/time zone to determine which side of the date demarcation line you're on.

The epoch you mention is Fri, 05 May 2017 04:38:52 UTC. If you're in Greenwhich the LocalDate would be May 5th but if you're on the US West Coast it's still May 4th. Here's a list converting that epoch to different time zones

Instant.ofEpochMilli(1493959132000L).atZone(ZoneOffset.UTC).toLocalDate() //2017-05-05
Instant.ofEpochMilli(1493959132000L).atZone(ZoneId.of("America/Chicago")).toLocalDate() //2017-05-04

Therefore the argument asks for the amount of epoch days to convert to a local date.

LocalDate.ofEpochDay(17291) //2017-05-05

Upvotes: 1

Darshan Mehta
Darshan Mehta

Reputation: 30819

Here's javadoc of ofEpochDay, this is what it says:

This returns a LocalDate with the specified epoch-day. The EPOCH_DAY is a simple incrementing count of days where day 0 is 1970-01-01. Negative numbers represent earlier days.

So, it expects the argument to be number of days since 1970-01-01. As the value you are passing is not valid, it throws the Exception.

Now, coming to your use case, if you want to convert epoch time to localdate then you need to use ofEpochMilli method of Instant class, e.g.:

LocalDate localDate =
        Instant.ofEpochMilli(1493959132000l).atZone(ZoneId.systemDefault()).toLocalDate();
System.out.println(localDate);

Here's javadoc for Instant class.

Update

Alternatively, you can convert the timestamp into number of days since 1970-01-01 and pass it to ofEpochDay() method, e.g.:

LocalDate localDate = LocalDate.ofEpochDay(1493959132000l/(1000 * 60 *60 * 24));
System.out.println(localDate);

Upvotes: 8

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