About Question enthuware.ocpjp.v7.2.1206 :

[horst1a]

Shouldn't class FileCopier implement AutoCloseAble here ?

[admin]

Why do you think so?

[horst1a]

Resources are opened in a try with resources block.if that fails or even one of the reosurces cant be opened, they should be closed.
Therefore the class has to implement AutoCloseAble

[admin]

It is the resource that is being opened in the try block that should implement AutoCloseable. FileCopier class is not that resource.

[horst1a]

Oh, thank you, thats a good explication