cn.hutool.core.io.file

Enum FileMode

java.lang.Object

java.lang.Enum<FileMode>

cn.hutool.core.io.file.FileMode

All Implemented Interfaces:

Serializable, Comparable<FileMode>

public enum FileMode
extends Enum<FileMode>

文件读写模式，常用于RandomAccessFile

Since:

4.5.2

Author:

looly

Enum Constant Summary

Enum Constants

Enum Constant and Description
r 以只读方式打开。调用结果对象的任何 write 方法都将导致抛出 IOException。
rw 打开以便读取和写入。
rwd 打开以便读取和写入，相对于 "rw"，"rwd" 还要求对“文件的内容”的每个更新都同步写入到基础存储设备。
rws 打开以便读取和写入。相对于 "rw"，"rws" 还要求对“文件的内容”或“元数据”的每个更新都同步写入到基础存储设备。

Method Summary

Modifier and Type	Method and Description
static FileMode	valueOf(String name) Returns the enum constant of this type with the specified name.
static FileMode[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

r

public static final FileMode r

以只读方式打开。调用结果对象的任何 write 方法都将导致抛出 IOException。

rw

public static final FileMode rw

打开以便读取和写入。

rws

public static final FileMode rws

打开以便读取和写入。相对于 "rw"，"rws" 还要求对“文件的内容”或“元数据”的每个更新都同步写入到基础存储设备。

rwd

public static final FileMode rwd

打开以便读取和写入，相对于 "rw"，"rwd" 还要求对“文件的内容”的每个更新都同步写入到基础存储设备。

Method Detail

values

public static FileMode[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (FileMode c : FileMode.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static FileMode valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null