Exam 1z0-809 topic 1 question 144 discussion

Actual exam question from Oracle's 1z0-809

Question #: 144
Topic #: 1

Given the code fragments:
and

Which two modifications enable to sort the elements of the emps list? (Choose two.)

A. Replace line n1 with class Person extends Comparator<Person>
B. At line n2 insert public int compareTo (Person p) { return this.name.compareTo (p.name); }
C. Replace line n1 with class Person implements Comparable<Person>
D. At line n2 insert public int compare (Person p1, Person p2) { return p1.name.compareTo (p2.name); }
E. At line n2 insert: public int compareTo (Person p, Person p2) { return p1.name.compareTo (p2.name); }
F. Replace line n1 with class Person implements Comparator<Person>

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Suggested Answer: BC 🗳️

by Manuel7000 at March 29, 2021, 3:37 p.m.

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1 week, 3 days ago

Selected Answer: BC

Anser is B and C, since class Person should implement Comparable Interface and implement its method : int compareTo(T o)

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4 months, 1 week ago

Selected Answer: BC

B and C are true.

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2 years, 5 months ago

b，c，tested

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3 years, 2 months ago

Agree and tested

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