Package org.apache.commons.io.monitor

# Interface FileAlterationListener

All Known Implementing Classes:
  `FileAlterationListenerAdaptor`

public interface FileAlterationListener
Receives events of file system modifications.

Register `FileAlterationListener`s with a `FileAlterationObserver`.

Since:
  2.0
See Also:
  - `FileAlterationObserver`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `onDirectoryChange(File directory)`
  Directory changed Event.
  `void`
  `onDirectoryCreate(File directory)`
  Directory created Event.
  `void`
  `onDirectoryDelete(File directory)`
  Directory deleted Event.
  `void`
  `onFileChange(File file)`
  File changed Event.
  `void`
  `onFileCreate(File file)`
  File created Event.
  `void`
  `onFileDelete(File file)`
  File deleted Event.
  `void`
  `onStart(FileAlterationObserver observer)`
  File system observer started checking event.
  `void`
  `onStop(FileAlterationObserver observer)`
  File system observer finished checking event.

- ## Method Details

  - ### onDirectoryChange

    void onDirectoryChange(File directory)
    Directory changed Event.
    Parameters:
      `directory` - The directory changed.

  - ### onDirectoryCreate

    void onDirectoryCreate(File directory)
    Directory created Event.
    Parameters:
      `directory` - The directory created.

  - ### onDirectoryDelete

    void onDirectoryDelete(File directory)
    Directory deleted Event.
    Parameters:
      `directory` - The directory deleted.

  - ### onFileChange

    void onFileChange(File file)
    File changed Event.
    Parameters:
      `file` - The file changed.

  - ### onFileCreate

    void onFileCreate(File file)
    File created Event.
    Parameters:
      `file` - The file created.

  - ### onFileDelete

    void onFileDelete(File file)
    File deleted Event.
    Parameters:
      `file` - The file deleted.

  - ### onStart

    void onStart(FileAlterationObserver observer)
    File system observer started checking event.
    Parameters:
      `observer` - The file system observer.

  - ### onStop

    void onStop(FileAlterationObserver observer)
    File system observer finished checking event.
    Parameters:
      `observer` - The file system observer.