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java.lang.Objectorg.apache.commons.io.filefilter.AbstractFileFilter
org.apache.commons.io.filefilter.EmptyFileFilter
public class EmptyFileFilter
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]);
}
| Field Summary | |
|---|---|
static IOFileFilter |
EMPTY
Singleton instance of empty filter |
static IOFileFilter |
NOT_EMPTY
Singleton instance of not-empty filter |
| Constructor Summary | |
|---|---|
protected |
EmptyFileFilter()
Restrictive consructor. |
| Method Summary | |
|---|---|
boolean |
accept(File file)
Checks to see if the file is empty. |
| Methods inherited from class org.apache.commons.io.filefilter.AbstractFileFilter |
|---|
accept, toString |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
|---|
public static final IOFileFilter EMPTY
public static final IOFileFilter NOT_EMPTY
| Constructor Detail |
|---|
protected EmptyFileFilter()
| Method Detail |
|---|
public boolean accept(File file)
accept in interface FileFilteraccept in interface IOFileFilteraccept in class AbstractFileFilterfile - the file or directory to check
true if the file or directory
is empty, otherwise false.
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