Given:

What is the output?

A)

P1Y

PT8784H

B)

PT8784H

P1Y

C)

UnsupportedTemporalTypeException

D)

P1Y

UnsupportedTemporalTypeException

E)

PT8784H

UnsupportedTemporalTypeException

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P1Y

java.time.temporal.UnsupportedTemporalTypeException: Unsupported unit: Seconds

at java.base/java.time.LocalDate.until(LocalDate.java:1636)

at java.base/java.time.Duration.between(Duration.java:489)

Period works well with LocalDate, while Duration no.

Because duration works with Time and according to JavaDoc:

"The specified temporal objects must support the SECONDS unit. For full accuracy, either the NANOS unit or the NANO_OF_SECOND field should be supported."

Duration javadoc: https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/time/Duration.html#between(java.time.temporal.Temporal,java.time.temporal.Temporal)

Period javadoc: https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/time/Period.html#between(java.time.LocalDate,java.time.LocalDate)