FULL PRODUCT VERSION :
java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b124)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b66, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Windows 7 64 bits, Windows 8.1 64 bits

A DESCRIPTION OF THE PROBLEM :
Hello,

I'm trying to use the new java.time api that comes with Java 8.

I've a String "01/08/2012_00:00:01", the time ref. is UTC, and I want to convert it to an 'Instant'.

I tried (The code seems compliant with the JavaDoc.):

DateTimeFormatter FORMAT_DT = DateTimeFormatter.ofPattern("dd/MM/yyyy_HH:mm:ss").withZone(ZoneOffset.UTC);
Instant instant = Instant.from(FORMAT_DT.parse("01/08/2012_00:00:01"));

But it fails on the second line with following error:

java.time.DateTimeException: Unable to obtain Instant from TemporalAccessor: {},ISO resolved to 2012-08-01T00:00:01 of type java.time.format.Parsed
at java.time.Instant.from(Unknown Source)



Note: Using first a LocalDateTime instead of an Instant works:

LocalDateTime ldt = LocalDateTime.from(FORMAT_DT.parse("01/08/2012_00:00:01"));
Instant instant = Instant.from(ldt.atZone(ZoneOffset.UTC));

But it seems strange to have to go through a LocalDateTime to convert a String to an Instant ...


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run following code:
DateTimeFormatter FORMAT_DT = DateTimeFormatter.ofPattern("dd/MM/yyyy_HH:mm:ss").withZone(ZoneOffset.UTC);
Instant instant = Instant.from(FORMAT_DT.parse("01/08/2012_00:00:01"));

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
'instant' should contain a valid value
ACTUAL -
An java.time.DateTimeException is raised.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.time.DateTimeException: Unable to obtain Instant from TemporalAccessor: {},ISO resolved to 2012-08-01T00:00:01 of type java.time.format.Parsed
at java.time.Instant.from(Unknown Source)

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
DateTimeFormatter FORMAT_DT = DateTimeFormatter.ofPattern("dd/MM/yyyy_HH:mm:ss").withZone(ZoneOffset.UTC);
LocalDateTime ldt = LocalDateTime.from(FORMAT_DT.parse("01/08/2012_00:00:01"));
Instant instant = Instant.from(ldt.atZone(ZoneOffset.UTC));