Package org.apache.commons.io.filefilter

Class CanReadFileFilter

java.lang.Object

org.apache.commons.io.filefilter.AbstractFileFilter

org.apache.commons.io.filefilter.CanReadFileFilter

All Implemented Interfaces:

java.io.FileFilter, java.io.FilenameFilter, java.io.Serializable, IOFileFilter

public class CanReadFileFilter
extends AbstractFileFilter
implements java.io.Serializable

This filter accepts Files that can be read.

Example, showing how to print out a list of the current directory's readable files:

 File dir = new File(".");
 String[] files = dir.list( CanReadFileFilter.CAN_READ );
 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 un-readable files:

 File dir = new File(".");
 String[] files = dir.list( CanReadFileFilter.CANNOT_READ );
 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 read-only files:

 File dir = new File(".");
 String[] files = dir.list( CanReadFileFilter.READ_ONLY );
 for ( int i = 0; i < files.length; i++ ) {
     System.out.println(files[i]);
 }
 

Since:

1.3

Version:

$Id$

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static IOFileFilter	CAN_READ	Singleton instance of readable filter
static IOFileFilter	CANNOT_READ	Singleton instance of not readable filter
static IOFileFilter	READ_ONLY	Singleton instance of read-only filter

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CanReadFileFilter()	Restrictive constructor.

Method Summary

Modifier and Type	Method	Description
boolean	accept(java.io.File file)	Checks to see if the file can be read.

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

CAN_READ

public static final IOFileFilter CAN_READ

Singleton instance of readable filter

CANNOT_READ

public static final IOFileFilter CANNOT_READ

Singleton instance of not readable filter

READ_ONLY

public static final IOFileFilter READ_ONLY

Singleton instance of read-only filter

Constructor Detail

CanReadFileFilter

protected CanReadFileFilter()

Restrictive constructor.

Method Detail

accept

public boolean accept(java.io.File file)

Checks to see if the file can be read.

Specified by:

accept in interface java.io.FileFilter

Specified by:

accept in interface IOFileFilter

Overrides:

accept in class AbstractFileFilter

Parameters:

file - the File to check.

Returns:

true if the file can be read, otherwise false.