Package org.apache.commons.io.filefilter
Class EmptyFileFilter
- java.lang.Object
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- org.apache.commons.io.filefilter.AbstractFileFilter
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- org.apache.commons.io.filefilter.EmptyFileFilter
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- All Implemented Interfaces:
FileFilter
,FilenameFilter
,Serializable
,IOFileFilter
public class EmptyFileFilter extends AbstractFileFilter implements Serializable
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:
- 1.3
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description static IOFileFilter
EMPTY
Singleton instance of empty filterstatic IOFileFilter
NOT_EMPTY
Singleton instance of not-empty filter-
Fields inherited from interface org.apache.commons.io.filefilter.IOFileFilter
EMPTY_STRING_ARRAY
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
accept(File file)
Checks to see if the file is empty.-
Methods inherited from class org.apache.commons.io.filefilter.AbstractFileFilter
accept, toString
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Field Detail
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EMPTY
public static final IOFileFilter EMPTY
Singleton instance of empty filter
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NOT_EMPTY
public static final IOFileFilter NOT_EMPTY
Singleton instance of not-empty filter
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Method Detail
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accept
public boolean accept(File file)
Checks to see if the file is empty.- Specified by:
accept
in interfaceFileFilter
- Specified by:
accept
in interfaceIOFileFilter
- Overrides:
accept
in classAbstractFileFilter
- Parameters:
file
- the file or directory to check- Returns:
true
if the file or directory is empty, otherwisefalse
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