Inspectopedia
 
2024.3

Bulk 'Files.readAttributes()' call can be used

Warning
New
Last modified: 03 December 2024

Reports multiple sequential java.io.File attribute checks, such as:

  • isDirectory()

  • isFile()

  • lastModified()

  • length()

Such calls can be replaced with a bulk Files.readAttributes() call. This is usually more performant than multiple separate attribute checks.

Example:

After the quick-fix is applied:

This inspection does not show a warning if IOException is not handled in the current context, but the quick-fix is still available.

Note that the replacements are usually not completely equivalent and should be applied with care. In particular, the behavior could differ if the file does not exist at all.

This inspection only reports if the language level of the project or module is 7 or higher.

New in 2022.1