I/O · interview question

What does new File("data.txt") do if data.txt doesn't exist?

Multiple choiceMedium

It creates a File object representing that path; nothing is created or opened on disk.It creates an empty data.txt file.It throws FileNotFoundException.It returns null.

Answer and explanation

Correct answer

A. It creates a File object representing that path; nothing is created or opened on disk.

Why

File (and Path) are just abstract pathnames. Use exists() / Files.exists(path) to check the disk.

References

The Java Tutorials: Basic I/O

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