org.apache.commons.io.filefilter
Class EmptyFileFilter
java.lang.Object
|
+--org.apache.commons.io.filefilter.AbstractFileFilter
|
+--org.apache.commons.io.filefilter.EmptyFileFilter
- All Implemented Interfaces:
- FileFilter, FilenameFilter, IOFileFilter
- public class EmptyFileFilter
- extends AbstractFileFilter
This filter accepts files or directories that are empty.
If the File
is a directory it checks that
it contains no files.
Example, showing how to print out a list of the
current directory's empty files/directories:
File dir = new File(".");
String[] files = dir.list( EmptyFileFilter.EMPTY );
for ( int i = 0; i < files.length; i++ ) {
System.out.println(files[i]);
}
Example, showing how to print out a list of the
current directory's non-empty files/directories:
File dir = new File(".");
String[] files = dir.list( EmptyFileFilter.NOT_EMPTY );
for ( int i = 0; i < files.length; i++ ) {
System.out.println(files[i]);
}
- Since:
- Commons IO 1.3
- Version:
- $Revision: 437567 $
Method Summary |
boolean |
accept(File file)
Checks to see if the file is empty. |
Methods inherited from class java.lang.Object |
, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait |
EMPTY
public static final IOFileFilter EMPTY
- Singleton instance of empty filter
NOT_EMPTY
public static final IOFileFilter NOT_EMPTY
- Singleton instance of not-empty filter
EmptyFileFilter
protected EmptyFileFilter()
- Restrictive consructor.
accept
public boolean accept(File file)
- Checks to see if the file is empty.
- Overrides:
accept
in class AbstractFileFilter
- Parameters:
file
- the file or directory to check- Returns:
true
if the file or directory
is empty, otherwise false
.