Assume that Projects contains subdirectories that contain .class files and is passed as an argument to the recDelete () method when it is invoked. What is the result?

Question

Options

• AThe method deletes all the .class files in the Projects directory and its subdirectories.
• BThe method deletes the .class files of the Projects directory only.
• CThe method executes and does not make any changes to the Projects directory.
• DThe method throws an IOException.

• A
  4% (1)
• B
  79% (19)
• C
  13% (3)
• D
  4% (1)

Explanation

Option B is correct because the recDelete() method attempts to delete subdirectories using File.delete(), which silently fails (returns false without throwing an exception) when a directory is non-empty. Since the subdirectories still contain .class files, they cannot be deleted, and the method never recurses into them - so only the .class files directly inside Projects are removed.

Option A is wrong because true recursive deletion requires explicitly iterating into each subdirectory before trying to delete it; this method doesn't do that correctly. Option C is wrong because the method does make changes - it successfully deletes .class files at the top level of Projects. Option D is wrong because File.delete() does not throw an IOException on failure; it simply returns false, which is the classic Java File API trap.

Memory tip: Think of File.delete() as a "polite no" - it refuses to delete non-empty directories but never complains about it. If you want recursive deletion in Java, you must empty the directory first or use Files.walkFileTree().

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