FilenameFilter (Java SE 11 & JDK 11 )
Keywords: java.io.FilenameFilter interface

Module java.base
Package java.io

## Interface FilenameFilter

- Functional Interface:
    This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

      @FunctionalInterface
      public interface FilenameFilter

  Instances of classes that implement this interface are used to filter filenames. These instances are used to filter directory listings in the `list` method of class `File`, and by the Abstract Window Toolkit's file dialog component.
  Since:
    1.0
  See Also:
    `FileDialog.setFilenameFilter(java.io.FilenameFilter)`, `File`, `File.list(java.io.FilenameFilter)`

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `boolean` | `accept​(File dir, String name)` | Tests if a specified file should be included in a file list.

- - ### Method Detail

    - #### accept

          boolean accept​(File dir,
                         String name)

      Tests if a specified file should be included in a file list.
      Parameters:
        `dir` - the directory in which the file was found.
        `name` - the name of the file.
      Returns:
        `true` if and only if the name should be included in the file list; `false` otherwise.