Exam 1z0-809 topic 1 question 16 discussion

Actual exam question from Oracle's 1z0-809

Question #: 16
Topic #: 1

Given the code fragment:
Map<Integer, String> books = new TreeMap<>();
books.put (1007, "A");
books.put (1002, "C");
books.put (1001, "B");
books.put (1003, "B");
System.out.println (books);
What is the result?

A. {1007 = A, 1002 = C, 1001 = B, 1003 = B}
B. {1001 = B, 1002 = C, 1003 = B, 1007 = A}
C. {1002 = C, 1003 = B, 1007 = A}
D. {1007 = A, 1001 = B, 1003 = B, 1002 = C}

Show Suggested Answer

Suggested Answer: B 🗳️
Reference:
TreeMap inherits SortedMap and automatically sorts the element's key

by Svetleto13 at April 20, 2021, 2:28 p.m.

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Svetleto13

Highly Voted 4 years, 2 months ago

B,tested.

upvoted 5 times

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6c84cb9

Most Recent 11 months, 2 weeks ago

B {1001=B, 1002=C, 1003=B, 1007=A}

upvoted 1 times

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asdfjhfgjuaDCV

1 year, 4 months ago

B is the correct answer

upvoted 1 times

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steefaand

1 year, 5 months ago

Selected Answer: B

TreeMap sorts keys in ascending order by default so answer is B.

upvoted 1 times

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iSnover

1 year, 5 months ago

Selected Answer: B

Looking at the reference type, it is a TreeMap, so it is ordered using the key, and as the key is of type "int", the correct answer is B.

upvoted 1 times

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r1muka5

2 years, 4 months ago

Correct anwser is B

upvoted 1 times

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kishanrao

2 years, 11 months ago

the Ans:B

upvoted 1 times

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YasinGaber

3 years, 5 months ago

B, tested.

upvoted 1 times

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