Sybex:Java 8 OCA/OCP Practice Tests Chapter 17 question 10 page 518 typo in explanation

[Vlad Alin]

Sybex:Java 8 OCA/OCP Practice Tests Chapter 17 question 10  page 292 typo in explanation page 518

import java.time.*;

class Main {
    public static void main(String[] args) {
        LocalDate waffleDay = LocalDate.of(2017, Month.MARCH, 25);
        //2017-03-25
        Period period = Period.of(1, 6, 3);
        LocalDate later = waffleDay.plus(period);
        //2018-09-28
        later.plusDays(1);
        LocalDate thisOne = LocalDate.of(2018, Month.SEPTEMBER, 28);
        //2018-09-28
        LocalDate thatOne = LocalDate.of(2018, Month.SEPTEMBER, 29);
        //2018-09-29
        System.out.println(later.isBefore(thisOne) + " " + later.isBefore(thatOne));
        //false true
    }
}

typo at page 518 In the answer explanation:
"Since thisOne is an exact match but thatOne is a whole day before, the output is false true, making Option B correct."

It should be thatOne is a whole day AFTER instead of BEFORE.
thatOne=2018-09-29
later=2018-09-28

by alinvlad05

[Stephan van Hulst]

You are correct, but I think the explanation would be easier to match to the source code if it read:

Since later matches thisOne exactly, but later is a whole day before thatOne, the output is false true, making Option B correct.

[Jeanne Boyarsky]

Good catch. Added to the errata for the Java 8 and 17 books. (dates weren't on the Java 11 exam)