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Closing a file

marlon tan
Ranch Hand

Joined: Feb 18, 2001
Posts: 53

In using Java IO classes, you often wrap lower level input/output stream to a higher level one. For example,

What's the appropriate way of closing the file, do you close the file using
lower.close() or higher.close(), or both?

Thank you.
Ernest Friedman-Hill
author and iconoclast

Joined: Jul 08, 2003
Posts: 24189

The "wrapper" classes like BufferedWriter pass the close() call along to the "wrapped" object -- so calling upper.close() automatically calls lower.close() as well.

[Jess in Action][AskingGoodQuestions]
It is sorta covered in the JavaRanch Style Guide.
subject: Closing a file