java.io.FileFilter, java.io.FilenameFilter, java.io.Serializable, IOFileFilterpublic 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 | Description |
|---|---|---|
static IOFileFilter |
EMPTY |
Singleton instance of empty filter
|
static IOFileFilter |
NOT_EMPTY |
Singleton instance of not-empty filter
|
| Modifier | Constructor | Description |
|---|---|---|
protected |
EmptyFileFilter() |
Restrictive constructor.
|
| Modifier and Type | Method | Description |
|---|---|---|
boolean |
accept(java.io.File file) |
Checks to see if the file is empty.
|
accept, toStringpublic static final IOFileFilter EMPTY
public static final IOFileFilter NOT_EMPTY
protected EmptyFileFilter()
public boolean accept(java.io.File file)
accept in interface java.io.FileFilteraccept in interface IOFileFilteraccept in class AbstractFileFilterfile - the file or directory to checktrue if the file or directory
is empty, otherwise false.