Package org.apache.commons.io.filefilter

Class NotFileFilter

java.lang.Object

org.apache.commons.io.filefilter.AbstractFileFilter

org.apache.commons.io.filefilter.NotFileFilter

All Implemented Interfaces:

FileFilter, FilenameFilter, Serializable, IOFileFilter

public class NotFileFilter
extends AbstractFileFilter
implements Serializable

This filter produces a logical NOT of the filters specified.

Since:

1.0

See Also:

• FileFilterUtils.notFileFilter(IOFileFilter)
• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private final IOFileFilter	filter	The filter
private static final long	serialVersionUID

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

EMPTY_STRING_ARRAY

Constructor Summary

Constructors

Constructor	Description
NotFileFilter(IOFileFilter filter)	Constructs a new file filter that NOTs the result of another filter.

Method Summary

Modifier and Type	Method	Description
boolean	accept(File file)	Returns the logical NOT of the underlying filter's return value for the same File.
boolean	accept(File file, String name)	Returns the logical NOT of the underlying filter's return value for the same arguments.
String	toString()	Provide a String representation of this file filter.

Methods inherited from class java.lang.Object

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

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

filter

private final IOFileFilter filter

The filter

Constructor Details

NotFileFilter

public NotFileFilter(IOFileFilter filter)

Constructs a new file filter that NOTs the result of another filter.

Parameters:

filter - the filter, must not be null

Throws:

IllegalArgumentException - if the filter is null

Method Details

accept

public boolean accept(File file)

Returns the logical NOT of the underlying filter's return value for the same File.

Specified by:

accept in interface FileFilter

Specified by:

accept in interface IOFileFilter

Overrides:

accept in class AbstractFileFilter

Parameters:

file - the File to check

Returns:

true if the filter returns false

accept

public boolean accept(File file,
 String name)

Returns the logical NOT of the underlying filter's return value for the same arguments.

Specified by:

accept in interface FilenameFilter

Specified by:

accept in interface IOFileFilter

Overrides:

accept in class AbstractFileFilter

Parameters:

file - the File directory

name - the file name

Returns:

true if the filter returns false

toString

public String toString()

Provide a String representation of this file filter.

Overrides:

toString in class AbstractFileFilter

Returns:

a String representation