Package org.apache.commons.io.filefilter

# Class AgeFileFilter

java.lang.Object
org.apache.commons.io.filefilter.AbstractFileFilter
org.apache.commons.io.filefilter.AgeFileFilter

All Implemented Interfaces:
  `FileFilter`, `FilenameFilter`, `Serializable`, `FileVisitor<Path>`, `PathMatcher`, `PathFilter`, `PathVisitor`, `IOFileFilter`

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:

## Using Classic IO

     Path dir = PathUtils.current();
     // We are interested in files older than one day
     Instant cutoff = Instant.now().minus(Duration.ofDays(1));
     String[] files = dir.list(new AgeFileFilter(cutoff));
     for (String file : files) {
         System.out.println(file);
     }

## Using NIO

     Path dir = PathUtils.current();
     // We are interested in files older than one day
     Instant cutoff = Instant.now().minus(Duration.ofDays(1));
     AccumulatorPathVisitor visitor = AccumulatorPathVisitor.withLongCounters(new AgeFileFilter(cutoff));
     //
     // Walk one dir
     Files.walkFileTree(dir, Collections.emptySet(), 1, visitor);
     System.out.println(visitor.getPathCounters());
     System.out.println(visitor.getFileList());
     //
     visitor.getPathCounters().reset();
     //
     // Walk dir tree
     Files.walkFileTree(dir, visitor);
     System.out.println(visitor.getPathCounters());
     System.out.println(visitor.getDirList());
     System.out.println(visitor.getFileList());

## Deprecating Serialization

Serialization is deprecated and will be removed in 3.0.

Since:
  1.2
See Also:
  - `FileFilterUtils.ageFileFilter(Date)`
  - `FileFilterUtils.ageFileFilter(File)`
  - `FileFilterUtils.ageFileFilter(long)`
  - `FileFilterUtils.ageFileFilter(Date, boolean)`
  - `FileFilterUtils.ageFileFilter(File, boolean)`
  - `FileFilterUtils.ageFileFilter(long, boolean)`
  - Serialized Form

- ## Field Summary

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

  `EMPTY_STRING_ARRAY`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `AgeFileFilter(long cutoffMillis)`
  Constructs a new age file filter for files equal to or older than a certain cutoff
  `AgeFileFilter(long cutoffMillis, boolean acceptOlder)`
  Constructs a new age file filter for files on any one side of a certain cutoff.
  `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).
  `AgeFileFilter(Instant cutoffInstant)`
  Constructs a new age file filter for files equal to or older than a certain cutoff.
  `AgeFileFilter(Instant cutoffInstant, 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.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `boolean`
  `accept(File file)`
  Checks to see if the last modification of the file matches cutoff favorably.
  `FileVisitResult`
  `accept(Path file, BasicFileAttributes attributes)`
  Checks to see if the last modification of the file matches cutoff favorably.
  `String`
  `toString()`
  Provide a String representation of this file filter.

  ### Methods inherited from class org.apache.commons.io.filefilter.AbstractFileFilter

  `accept, handle, postVisitDirectory, preVisitDirectory, visitFile, visitFileFailed`

  ### Methods inherited from class java.lang.Object

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

  ### Methods inherited from interface org.apache.commons.io.filefilter.IOFileFilter

  `and, matches, negate, or`

- ## Constructor Details

  - ### 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 used 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 used 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).

  - ### AgeFileFilter

    public AgeFileFilter(Instant cutoffInstant)
    Constructs a new age file filter for files equal to or older than a certain cutoff.
    Parameters:
      `cutoffInstant` - The cutoff time threshold since the epoch (00:00:00 GMT, January 1, 1970).
    Since:
      2.12.0

  - ### AgeFileFilter

    public AgeFileFilter(Instant cutoffInstant, boolean acceptOlder)
    Constructs a new age file filter for files on any one side of a certain cutoff.
    Parameters:
      `cutoffInstant` - The cutoff time threshold since the epoch (00:00:00 GMT, January 1, 1970).
      `acceptOlder` - if true, older files (at or before the cutoff) are accepted, else newer ones (after the cutoff).
    Since:
      2.12.0

  - ### AgeFileFilter

    public AgeFileFilter(long cutoffMillis)
    Constructs a new age file filter for files equal to or older than a certain cutoff
    Parameters:
      `cutoffMillis` - The cutoff time threshold measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970).

  - ### AgeFileFilter

    public AgeFileFilter(long cutoffMillis, boolean acceptOlder)
    Constructs a new age file filter for files on any one side of a certain cutoff.
    Parameters:
      `cutoffMillis` - The cutoff time threshold measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970).
      `acceptOlder` - if true, older files (at or before the cutoff) are accepted, else newer ones (after the cutoff).

- ## Method Details

  - ### 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.

    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 file name matches

  - ### accept

    public FileVisitResult accept(Path file, BasicFileAttributes attributes)
    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.

    Specified by:
      `accept` in interface `IOFileFilter`
    Specified by:
      `accept` in interface `PathFilter`
    Parameters:
      `file` - the File to check
      `attributes` - the file's basic attributes (TODO may be null).
    Returns:
      true if the file name matches
    Since:
      2.9.0

  - ### toString

    public String toString()
    Provide a String representation of this file filter.
    Overrides:
      `toString` in class `AbstractFileFilter`
    Returns:
      a String representation