Java SE 8 Programmer II — Question 3

Given the code fragment:
Path source = Paths.get ("/data/december/log.txt");
Path destination = Paths.get("/data");
Files.copy (source, destination);
/data/december/log.txt is accessible and contains:
and assuming that the file
10-Dec-2014 Executed successfully
What is the result?
log.txt is created in the /data directory and the content of the /data/december/log.txt file is copied to it.

Answer options

• A. A file with the name
• B. The program executes successfully and does NOT change the file system. FileNotFoundException is thrown at run time.
• C. A FileAlreadyExistsException is thrown at run time.
• D. A

Correct answer: B

Explanation

The correct answer is B because the Files.copy method does not overwrite existing files by default, and since the destination directory already contains a file with the same name, it will not change the file system. Options A and D do not accurately describe the outcome, while C is incorrect as no FileAlreadyExistsException is raised in this scenario.