javax.swing.filechooser
Class FileNameExtensionFilter
- java.lang.Object
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- javax.swing.filechooser.FileFilter
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- javax.swing.filechooser.FileNameExtensionFilter
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public final class FileNameExtensionFilter extends FileFilter
An implementation ofFileFilterthat 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
FileNameExtensionFilterthat will showjpgfiles:FileFilter filter = new FileNameExtensionFilter("JPEG file", "jpg", "jpeg"); JFileChooser fileChooser = ...; fileChooser.addChoosableFileFilter(filter);
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Constructor Summary
Constructors Constructor and Description FileNameExtensionFilter(String description, String... extensions)Creates aFileNameExtensionFilterwith the specified description and file name extensions.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description booleanaccept(File f)Tests the specified file, returning true if the file is accepted, false otherwise.StringgetDescription()The description of this filter.String[]getExtensions()Returns the set of file name extensions files are tested against.StringtoString()Returns a string representation of theFileNameExtensionFilter.
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Constructor Detail
FileNameExtensionFilter
public FileNameExtensionFilter(String description, String... extensions)
Creates aFileNameExtensionFilterwith the specified description and file name extensions. The returnedFileNameExtensionFilterwill accept all directories and any file with a file name extension contained inextensions.- Parameters:
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description- textual description for the filter, may benull -
extensions- the accepted file name extensions - Throws:
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IllegalArgumentException- if extensions isnull, empty, containsnull, or contains an empty string - See Also:
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accept(java.io.File)
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Method Detail
accept
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 thisFileFilter, or the file is a directory.- Specified by:
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acceptin classFileFilter - Parameters:
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f- theFileto test - Returns:
- true if the file is to be accepted, false otherwise
getDescription
public String getDescription()
The description of this filter. For example: "JPG and GIF Images."- Specified by:
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getDescriptionin classFileFilter - Returns:
- the description of this filter
- See Also:
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FileView.getName(java.io.File)
getExtensions
public String[] getExtensions()
Returns the set of file name extensions files are tested against.- Returns:
- the set of file name extensions files are tested against
toString
public String toString()
Returns a string representation of theFileNameExtensionFilter. This method is intended to be used for debugging purposes, and the content and format of the returned string may vary between implementations.
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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