public class EmptyFileFilter extends AbstractFileFilter implements java.io.Serializable
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]); }
Modifier and Type | Field and Description |
---|---|
static IOFileFilter |
EMPTY
Singleton instance of empty filter
|
static IOFileFilter |
NOT_EMPTY
Singleton instance of not-empty filter
|
Modifier and Type | Method and Description |
---|---|
boolean |
accept(java.io.File file)
Checks to see if the file is empty.
|
accept, toString
public static final IOFileFilter EMPTY
public static final IOFileFilter NOT_EMPTY
public boolean accept(java.io.File file)
accept
in interface java.io.FileFilter
accept
in interface IOFileFilter
accept
in class AbstractFileFilter
file
- the file or directory to checktrue
if the file or directory
is empty, otherwise false
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