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Exam 1z0-809 topic 1 question 175 discussion

Actual exam question from Oracle's 1z0-809
Question #: 175
Topic #: 1
[All 1z0-809 Questions]

Given the code fragment:
Map<Integer, String> books = new TreeMap<>();
books.put (1007, "A");
books.put (1002, "C");
books.put (1003, "B");
books.put (1003, "B");
System.out.println (books);
What is the result?

  • A. {1007=A, 1003=B, 1002=C}
  • B. {1007=A, 1003=B, 1003=B, 1002=C}
  • C. {1007=A, 1002=C, 1003=B, 1003=B}
  • D. {1002=C, 1003=B, 1007=A}
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
by jduarte at Jan. 27, 2021, 7:44 p.m.

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steefaand
5 months, 4 weeks ago
Selected Answer: D
D is true as TreeMap sorts in natural order by key. Also if last line of insertion was replaced by books.put (1003, "D"); then that would be printed.
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duydn
10 months, 2 weeks ago
Selected Answer: D
D is correct, TreeMap sort by natural : key
upvoted 1 times
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jduarte
3 years, 6 months ago
Answer D, tester
upvoted 3 times
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