org.apache.commons.io.filefilter

Class FalseFileFilter

java.lang.Object

org.apache.commons.io.filefilter.FalseFileFilter

All Implemented Interfaces:

FileFilter, FilenameFilter, Serializable, PathFilter, IOFileFilter

public class FalseFileFilter
extends Object
implements IOFileFilter, Serializable

A file filter that always returns false.

Since:

1.0

See Also:

FileFilterUtils.falseFileFilter(), Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static IOFileFilter	FALSE Singleton instance of false filter.
static IOFileFilter	INSTANCE Singleton instance of false filter.

Fields inherited from interface org.apache.commons.io.filefilter.IOFileFilter

EMPTY_STRING_ARRAY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	FalseFileFilter() Restrictive constructor.

Method Summary

Modifier and Type	Method and Description
boolean	accept(File file) Returns false.
boolean	accept(File dir, String name) Returns false.
FileVisitResult	accept(Path file, BasicFileAttributes attributes) Returns false.
IOFileFilter	and(IOFileFilter fileFilter) Creates a new "and" filter with this filter.
IOFileFilter	negate() Creates a new "not" filter with this filter.
IOFileFilter	or(IOFileFilter fileFilter) Creates a new "or" filter with this filter.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

FALSE

public static final IOFileFilter FALSE

Singleton instance of false filter.

Since:

1.3

INSTANCE

public static final IOFileFilter INSTANCE

Singleton instance of false filter. Please use the identical FalseFileFilter.FALSE constant. The new name is more JDK 1.5 friendly as it doesn't clash with other values when using static imports.

Constructor Detail

FalseFileFilter

protected FalseFileFilter()

Restrictive constructor.

Method Detail

accept

public boolean accept(File file)

Returns false.

Specified by:

accept in interface FileFilter

Specified by:

accept in interface IOFileFilter

Parameters:

file - the file to check (ignored)

Returns:

false

accept

public boolean accept(File dir,
                      String name)

Returns false.

Specified by:

accept in interface FilenameFilter

Specified by:

accept in interface IOFileFilter

Parameters:

dir - the directory to check (ignored)

name - the file name (ignored)

Returns:

false

accept

public FileVisitResult accept(Path file,
                              BasicFileAttributes attributes)

Returns false.

Specified by:

accept in interface PathFilter

Specified by:

accept in interface IOFileFilter

Parameters:

file - the file to check (ignored)

attributes - the file's basic attributes (TODO may be null).

Returns:

false

Since:

2.9.0

negate

public IOFileFilter negate()

Description copied from interface: IOFileFilter

Creates a new "not" filter with this filter.

Specified by:

negate in interface IOFileFilter

Returns:

a new filter.

toString

public String toString()

Overrides:

toString in class Object

and

public IOFileFilter and(IOFileFilter fileFilter)

Description copied from interface: IOFileFilter

Creates a new "and" filter with this filter.

Specified by:

and in interface IOFileFilter

Parameters:

fileFilter - the filter to "and".

Returns:

a new filter.

or

public IOFileFilter or(IOFileFilter fileFilter)

Description copied from interface: IOFileFilter

Creates a new "or" filter with this filter.

Specified by:

or in interface IOFileFilter

Parameters:

fileFilter - the filter to "or".

Returns:

a new filter.