Exam 1z0-809 topic 1 question 77 discussion

Actual exam question from Oracle's 1z0-809

Question #: 77
Topic #: 1

Given that /green.txt and /colors/yellow.txt are accessible, and the code fragment:
Path source = Paths.get("/green.txt);
Path target = Paths.get("/colors/yellow.txt);
Files.move(source, target, StandardCopyOption.ATOMIC_MOVE);
Files.delete(source);
Which statement is true?

A. The green.txt file content is replaced by the yellow.txt file content and the yellow.txt file is deleted.
B. The yellow.txt file content is replaced by the green.txt file content and an exception is thrown.
C. The file green.txt is moved to the /colors directory.
D. A FileAlreadyExistsException is thrown at runtime.

Show Suggested Answer

Suggested Answer: B 🗳️

by varconite at Dec. 6, 2020, 2:37 p.m.

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pul26

Highly Voted 4 years, 6 months ago

ATOMIC_MOVE prevents FileAlreadyExistsException to be thrown. delete method will cause an Exception since the file is already removed by the atomic move action. Answer is B

upvoted 10 times

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vidhuharu

Most Recent 8 months, 4 weeks ago

Selected Answer: D

Even with ATOMIC_MOVE, if the destination file (/colors/yellow.txt) exists and you haven’t provided REPLACE_EXISTING, a FileAlreadyExistsException will still be thrown

upvoted 1 times

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asdfjhfgjuaDCV

1 year, 3 months ago

B is the correct answer

upvoted 1 times

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steefaand

1 year, 4 months ago

Selected Answer: B

B since source file doesn't exist anymore.

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GaelBernard

1 year, 10 months ago

Selected Answer: B

B tested Exception in thread "main" java.nio.file.NoSuchFileException: green.txt A FileAlreadyExistsException is thrown only if we remove the StandardCopyOption.ATOMIC_MOVE option.

upvoted 1 times

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