# Class FileFilter

java.lang.Object
javax.swing.filechooser.FileFilter

Direct Known Subclasses:
  `BasicFileChooserUI.AcceptAllFileFilter`, `FileNameExtensionFilter`

public abstract class FileFilter extends Object
`FileFilter` is an abstract class used by `JFileChooser` for filtering the set of files shown to the user. See `FileNameExtensionFilter` for an implementation that filters using the file name extension.

A `FileFilter` can be set on a `JFileChooser` to keep unwanted files from appearing in the directory listing. For an example implementation of a simple file filter, see `yourJDK/demo/jfc/FileChooserDemo/ExampleFileFilter.java`. For more information and examples see How to Use File Choosers, a section in The Java Tutorial.

See Also:
  - `FileNameExtensionFilter`
  - `JFileChooser.setFileFilter(javax.swing.filechooser.FileFilter)`
  - `JFileChooser.addChoosableFileFilter(javax.swing.filechooser.FileFilter)`

- ## Constructor Summary

  Constructors
  Modifier
  Constructor
  Description
  `protected`
  `FileFilter()`
  Constructor for subclasses to call.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `abstract boolean`
  `accept(File f)`
  Whether the given file is accepted by this filter.
  `abstract String`
  `getDescription()`
  The description of this filter.

  ### Methods declared in class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Constructor Details

  - ### FileFilter

    protected FileFilter()
    Constructor for subclasses to call.

- ## Method Details

  - ### accept

    public abstract boolean accept(File f)
    Whether the given file is accepted by this filter.
    Parameters:
      `f` - the File to test
    Returns:
      true if the file is to be accepted

  - ### getDescription

    public abstract String getDescription()
    The description of this filter. For example: "JPG and GIF Images"
    Returns:
      the description of this filter
    See Also:
      - `FileView.getName(java.io.File)`