Working with Dates and Times (Java OCA 8 Programmer I Study Guide)

[Cedric Georges]

I have found 2 minor "errors" in the "OCA Java SE 8 Programmer I" book.

On page 141, a parameter name is missing in the last method signature:
public static LocalDateTime of(LocalDate date, LocalTime <missing>)

On page 147, after the following code: Period wrong = Period.ofYears(1).ofWeeks(1);
the explanation gives the following lines of code:
Period wrong = Period.ofYears(1);
wrong = Period.ofWeeks(7); --> should be replaced with : wrong = Period.ofWeeks(1);

Is that correct?

[Roel De Nijs]

Cedric Georges wrote:On page 141, a parameter name is missing in the last method signature:
public static LocalDateTime of(LocalDate date, LocalTime <missing>)

According to the javadoc of LocalDateTime, the method signature should be (as you would probably expect):

public static LocalDateTime of(LocalDate date, LocalTime time)

Cedric Georges wrote:On page 147, after the following code: Period wrong = Period.ofYears(1).ofWeeks(1);
the explanation gives the following lines of code:
Period wrong = Period.ofYears(1);
wrong = Period.ofWeeks(7); --> should be replaced with : wrong = Period.ofWeeks(1);

Yes, it's incorrect! Probably because in the previous code snippet 7 days is used to simulate 1 week. The correct code should be:

Period wrong = Period.ofYears(1);
wrong = Period.ofWeeks(1);

And maybe it would even better to have the following code (as it's the perfect equivalent of Period everyYearAndAWeek = Period.of(1, 0, 7);:

Period wrong = Period.ofYears(1).ofDays(7);

Period wrong = Period.ofYears(1);
wrong = Period.ofDays(7);

Hope it helps!
Kind regards,
Roel

(PS. I notified the authors of these errata items)

[Cedric Georges]

Thank you!

[Jeanne Boyarsky]

Added both to the errata list. Thanks for pointing these out!