This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
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
All Methods Instance Methods Abstract Methods
Modifier and Type
( accept File dir,
Tests if a specified file should be included in a file list.
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