OCP Date, Time, and Localization

Question 1

What is the result of executing `LocalDate.of(2024, Month.FEBRUARY, 29)`?

Accepted Answer

Returns 2024-02-29 because 2024 is a leap year

Answer

Returns 2024-03-01 by rolling over

Answer

Throws a DateTimeException

Answer

Returns 2024-02-28

Question 2

Which Java class represents a date and time without any time-zone information?

Accepted Answer

LocalDateTime

Answer

ZonedDateTime

Answer

Instant

Answer

OffsetDateTime

Question 3

What does `Period.between(LocalDate.of(2023, 1, 1), LocalDate.of(2024, 3, 15))` return when printed?

Accepted Answer

P1Y2M14D

Answer

P14M14D

Answer

P440D

Answer

P1Y14D

Question 4

Which method correctly obtains the current date using the UTC time zone?

Accepted Answer

LocalDate.now(ZoneId.of("UTC"))

Answer

LocalDate.now()

Answer

ZonedDateTime.now().toLocalDate()

Answer

Instant.now().toLocalDate()

Question 5

Which of the following correctly creates a Duration of 2 hours and 30 minutes?

Accepted Answer

Both options produce the same valid Duration

Answer

Duration.of(2, ChronoUnit.HOURS).plusMinutes(30) only

Answer

Duration.ofHours(2).plus(30, ChronoUnit.MINUTES) only

Answer

Duration.create(2, 30) with HOURS unit

Question 6

Which of the following correctly parses the string "2024-06-15" into a LocalDate?

Accepted Answer

Both options parse the string correctly

Answer

LocalDate.parse("2024-06-15") only

Answer

LocalDate.parse("2024-06-15", DateTimeFormatter.ISO_LOCAL_DATE) only

Answer

LocalDate.of("2024-06-15")

Question 7

What does `LocalDate.now().with(TemporalAdjusters.firstDayOfMonth())` return?

Accepted Answer

The first day of the current month

Answer

The last day of the current month

Answer

The first day of the current year

Answer

The first day of next month