程序包 java.nio.file

类 SimpleFileVisitor<T>

java.lang.Object

java.nio.file.SimpleFileVisitor<T>

类型参数:

T - The type of reference to the files

所有已实现的接口:

FileVisitor<T>

public class SimpleFileVisitor<T>
extends Object
implements FileVisitor<T>

A simple visitor of files with default behavior to visit all files and to re-throw I/O errors.

Methods in this class may be overridden subject to their general contract.

从以下版本开始:

1.7

构造器概要

构造器

限定符	构造器	说明
protected	SimpleFileVisitor()	Initializes a new instance of this class.

方法概要

限定符和类型	方法	说明
FileVisitResult	postVisitDirectory(T dir, IOException exc)	Invoked for a directory after entries in the directory, and all of their descendants, have been visited.
FileVisitResult	preVisitDirectory(T dir, BasicFileAttributes attrs)	Invoked for a directory before entries in the directory are visited.
FileVisitResult	visitFile(T file, BasicFileAttributes attrs)	Invoked for a file in a directory.
FileVisitResult	visitFileFailed(T file, IOException exc)	Invoked for a file that could not be visited.

从类继承的方法 java.lang.Object

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

构造器详细资料

SimpleFileVisitor

protected SimpleFileVisitor()

Initializes a new instance of this class.

方法详细资料

preVisitDirectory

public FileVisitResult preVisitDirectory(T dir,
                                         BasicFileAttributes attrs)
                                  throws IOException

Invoked for a directory before entries in the directory are visited.

Unless overridden, this method returns FileVisitResult#CONTINUE.

指定者:

preVisitDirectory 在接口中 FileVisitor<T>

参数:

dir - a reference to the directory

attrs - the directory's basic attributes

返回:

the visit result

抛出:

IOException - if an I/O error occurs

visitFile

public FileVisitResult visitFile(T file,
                                 BasicFileAttributes attrs)
                          throws IOException

Invoked for a file in a directory.

Unless overridden, this method returns FileVisitResult#CONTINUE.

指定者:

visitFile 在接口中 FileVisitor<T>

参数:

file - a reference to the file

attrs - the file's basic attributes

返回:

the visit result

抛出:

IOException - if an I/O error occurs

visitFileFailed

public FileVisitResult visitFileFailed(T file,
                                       IOException exc)
                                throws IOException

Invoked for a file that could not be visited.

Unless overridden, this method re-throws the I/O exception that prevented the file from being visited.

指定者:

visitFileFailed 在接口中 FileVisitor<T>

参数:

file - a reference to the file

exc - the I/O exception that prevented the file from being visited

返回:

the visit result

抛出:

IOException - if an I/O error occurs

postVisitDirectory

public FileVisitResult postVisitDirectory(T dir,
                                          IOException exc)
                                   throws IOException

Invoked for a directory after entries in the directory, and all of their descendants, have been visited.

Unless overridden, this method returns FileVisitResult#CONTINUE if the directory iteration completes without an I/O exception; otherwise this method re-throws the I/O exception that caused the iteration of the directory to terminate prematurely.

指定者:

postVisitDirectory 在接口中 FileVisitor<T>

参数:

dir - a reference to the directory

exc - null if the iteration of the directory completes without an error; otherwise the I/O exception that caused the iteration of the directory to complete prematurely

返回:

the visit result

抛出:

IOException - if an I/O error occurs