public final class FileNameExtensionFilter extends FileFilter
An implementation of FileFilter
that filters using a specified set of extensions. The extension for a file is the portion of the file name after the last ".". Files whose name does not contain a "." have no file name extension. File name extension comparisons are case insensitive.
The following example creates a FileNameExtensionFilter
that will show jpg
files:
FileFilter filter = new FileNameExtensionFilter("JPEG file", "jpg", "jpeg"); JFileChooser fileChooser = ...; fileChooser.addChoosableFileFilter(filter);
FileFilter
, JFileChooser.setFileFilter(javax.swing.filechooser.FileFilter)
, JFileChooser.addChoosableFileFilter(javax.swing.filechooser.FileFilter)
, JFileChooser.getFileFilter()
public FileNameExtensionFilter(String description, String... extensions)
Creates a FileNameExtensionFilter
with the specified description and file name extensions. The returned FileNameExtensionFilter
will accept all directories and any file with a file name extension contained in extensions
.
description
- textual description for the filter, may be null
extensions
- the accepted file name extensionsIllegalArgumentException
- if extensions is null
, empty, contains null
, or contains an empty stringaccept(java.io.File)
public boolean accept(File f)
Tests the specified file, returning true if the file is accepted, false otherwise. True is returned if the extension matches one of the file name extensions of this FileFilter
, or the file is a directory.
accept
in class FileFilter
f
- the File
to testpublic String getDescription()
The description of this filter. For example: "JPG and GIF Images."
getDescription
in class FileFilter
FileView.getName(java.io.File)
public String[] getExtensions()
Returns the set of file name extensions files are tested against.
public String toString()
Returns a string representation of the FileNameExtensionFilter
. This method is intended to be used for debugging purposes, and the content and format of the returned string may vary between implementations.
toString
in class Object
FileNameExtensionFilter
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