org.apache.commons.io.filefilter

类 CanReadFileFilter

java.lang.Object

org.apache.commons.io.filefilter.AbstractFileFilter

org.apache.commons.io.filefilter.CanReadFileFilter

所有已实现的接口:

FileFilter, FilenameFilter, Serializable, IOFileFilter

public class CanReadFileFilter
extends AbstractFileFilter
implements 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]);
 }
 

从以下版本开始:

1.3

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
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

构造器概要

构造器

限定符	构造器和说明
protected	CanReadFileFilter() Restrictive consructor.

方法概要

限定符和类型	方法和说明
boolean	accept(File file) Checks to see if the file can be read.

从类继承的方法 org.apache.commons.io.filefilter.AbstractFileFilter

accept, toString

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

字段详细资料

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

构造器详细资料

CanReadFileFilter

protected CanReadFileFilter()

Restrictive consructor.

方法详细资料

accept

public boolean accept(File file)

Checks to see if the file can be read.

指定者:

accept 在接口中 FileFilter

指定者:

accept 在接口中 IOFileFilter

覆盖:

accept 在类中 AbstractFileFilter

参数:

file - the File to check.

返回:

true if the file can be read, otherwise false.