Java OCA OCP Practice Question 2804

Question

Given the following code, which of the answer choices can fill in the blank to print true?

(Choose all that apply.) 

String m1 = Duration.of(1, ChronoUnit.MINUTES).toString(); 
String m2 = Duration.ofMinutes(1).toString(); 
String s = Duration.of(60, ChronoUnit.SECONDS).toString(); 


String d = Duration.ofDays(1).toString(); 
String p = Period.ofDays(1).toString(); 


System.out.println(           );
  • A. m1 == m2
  • B. m1.equals(m2)
  • C. m1.equals(s)
  • D. d == p
  • E. d.equals(p)


B, C.

Note

Options A and D are incorrect because the String references do not point to the same object.

Option E is incorrect because a Period format begins with a P and a Duration format begins with PT.

They are different types and do not represent the same value even though they are both a day.

Remember that Duration uses hours/minutes/seconds and Period uses years/months/days for measures.

Options B and C are correct because m1, m2, and s all represent a duration of the same length.




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