org.apache.commons.io.filefilter

Class AgeFileFilter

public class AgeFileFilter extends AbstractFileFilter implements Serializable

Filters files based on a cutoff time, can filter either newer files or files equal to or older.

For example, to print all files and directories in the current directory older than one day:

 File dir = new File(".");
 // We are interested in files older than one day
 long cutoff = System.currentTimeMillis() - (24 * 60 * 60 * 1000);
 String[] files = dir.list( new AgeFileFilter(cutoff) );
 for ( int i = 0; i < files.length; i++ ) {
     System.out.println(files[i]);
 }
 

Since: Commons IO 1.2

Version: $Id: AgeFileFilter.java 606381 2007-12-22 02:03:16Z ggregory $

Author: Rahul Akolkar

Field Summary
booleanacceptOlder
Whether the files accepted will be older or newer.
longcutoff
The cutoff time threshold.
Constructor Summary
AgeFileFilter(long cutoff)
Constructs a new age file filter for files equal to or older than a certain cutoff
AgeFileFilter(long cutoff, boolean acceptOlder)
Constructs a new age file filter for files on any one side of a certain cutoff.
AgeFileFilter(Date cutoffDate)
Constructs a new age file filter for files older than (at or before) a certain cutoff date.
AgeFileFilter(Date cutoffDate, boolean acceptOlder)
Constructs a new age file filter for files on any one side of a certain cutoff date.
AgeFileFilter(File cutoffReference)
Constructs a new age file filter for files older than (at or before) a certain File (whose last modification time will be used as reference).
AgeFileFilter(File cutoffReference, boolean acceptOlder)
Constructs a new age file filter for files on any one side of a certain File (whose last modification time will be used as reference).
Method Summary
booleanaccept(File file)
Checks to see if the last modification of the file matches cutoff favorably.
StringtoString()
Provide a String representaion of this file filter.

Field Detail

acceptOlder

private final boolean acceptOlder
Whether the files accepted will be older or newer.

cutoff

private final long cutoff
The cutoff time threshold.

Constructor Detail

AgeFileFilter

public AgeFileFilter(long cutoff)
Constructs a new age file filter for files equal to or older than a certain cutoff

Parameters: cutoff the threshold age of the files

AgeFileFilter

public AgeFileFilter(long cutoff, boolean acceptOlder)
Constructs a new age file filter for files on any one side of a certain cutoff.

Parameters: cutoff the threshold age of the files acceptOlder if true, older files (at or before the cutoff) are accepted, else newer ones (after the cutoff).

AgeFileFilter

public AgeFileFilter(Date cutoffDate)
Constructs a new age file filter for files older than (at or before) a certain cutoff date.

Parameters: cutoffDate the threshold age of the files

AgeFileFilter

public AgeFileFilter(Date cutoffDate, boolean acceptOlder)
Constructs a new age file filter for files on any one side of a certain cutoff date.

Parameters: cutoffDate the threshold age of the files acceptOlder if true, older files (at or before the cutoff) are accepted, else newer ones (after the cutoff).

AgeFileFilter

public AgeFileFilter(File cutoffReference)
Constructs a new age file filter for files older than (at or before) a certain File (whose last modification time will be used as reference).

Parameters: cutoffReference the file whose last modification time is usesd as the threshold age of the files

AgeFileFilter

public AgeFileFilter(File cutoffReference, boolean acceptOlder)
Constructs a new age file filter for files on any one side of a certain File (whose last modification time will be used as reference).

Parameters: cutoffReference the file whose last modification time is usesd as the threshold age of the files acceptOlder if true, older files (at or before the cutoff) are accepted, else newer ones (after the cutoff).

Method Detail

accept

public boolean accept(File file)
Checks to see if the last modification of the file matches cutoff favorably.

If last modification time equals cutoff and newer files are required, file IS NOT selected. If last modification time equals cutoff and older files are required, file IS selected.

Parameters: file the File to check

Returns: true if the filename matches

toString

public String toString()
Provide a String representaion of this file filter.

Returns: a String representaion

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