Java OCA OCP Practice Question 2800

Question

Note that March 13, 2016, is the weekend that clocks spring ahead for daylight savings time.

What is the output of the following?. 

LocalDate date = LocalDate.of(2016, Month.MARCH, 13); 
LocalTime time = LocalTime.of(1, 30); 
ZoneId zone = ZoneId.of("US/Eastern"); 
ZonedDateTime dateTime1 = ZonedDateTime.of(date, time, zone); 
ZonedDateTime dateTime2 = dateTime1.plus(1, ChronoUnit.HOURS); 


long hours = ChronoUnit.HOURS.between(dateTime1, dateTime2); 
int clock1 = dateTime1.getHour(); 
int clock2 = dateTime2.getHour(); 
System.out.println(hours + "," + clock1 + "," + clock2);
  • A. 1,1,2
  • B. 1,1,3
  • C. 2,1,2
  • D. 2,1,3
  • E. The code does not compile.
  • F. A runtime exception is thrown.


B.

Note

dateTime1 is 2016-03-13T01:30-05:00[US/Eastern] and dateTime2 is 2016-03-13T03:30-04:00[US/Eastern].

While the values are two hours apart, the time zone offset changes as well, making it only change from 6:30 GMT to 7:30 GMT.




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