Given the code fragment: Path currentFile = Paths.get("/scratch/exam/temp.txt"); Path outputFile = Paths.get("/scratch/exam/new.txt"); Path directory = Paths.get("/scratch/")…

Question

Options

• AThe /scratch/exam/new.txt and /scratch/new.txt are deleted.
• BThe program throws a FileAlreadyExistsException.
• CThe /scratch/exam/new.txt is deleted.
• DA copy of /scratch/exam/new.txt exists in the /scratch direc ory and /scratch/exam/new.txt is deleted.

• A
  5% (2)
• B
  81% (30)
• C
  11% (4)
• D
  3% (1)

Explanation

Files.copy(currentFile, outputFile) is invoked without StandardCopyOption.REPLACE_EXISTING, which is the flag required to overwrite an existing target file. When the target already exists at the time of the copy, the JVM throws FileAlreadyExistsException immediately - execution stops on that line, so neither Files.delete call ever runs.

• A is wrong because no deletion occurs at all; the exception thrown during the copy prevents all subsequent statements from executing.
• C is wrong for the same reason: Files.delete(outputFile) never runs because the exception fires before it.
• D is wrong on two counts: Files.copy(source, target) copies to the exact path given, not into a directory, and the exception again prevents any output anyway.

Memory tip: "Copy needs explicit permission to overwrite." Without REPLACE_EXISTING, Files.copy treats any existing target as an error - you must pass StandardCopyOption.REPLACE_EXISTING as a third argument to allow it.

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