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----------------------------
Files
-
Options
|
----------------------------
#
父级接口
#
子接口
----------------------------
StandardCopyOption
|
----------------------------
#
父级接口
CopyOption
#
枚举
REPLACE_EXISTING
,
//如果目标已经存在,则覆盖目标
COPY_ATTRIBUTES
,
//复制文件的属性
ATOMIC_MOVE
//原子性操作,要么移动成功,要么文件还在原处
----------------------------
StandardOpenOption
|
----------------------------
#
父级接口
OpenOption
#
枚举
READ
,
//打开阅读权限
WRITE
,
//打开写权限
APPEND
,
//在末尾添加,不覆盖以前的数据
TRUNCATE_EXISTING
,
//如果文件已经存在，并且打开进行WRITE 访问，则其长度将被截断为0。
CREATE
,
//如果不存在,则创建新的
CREATE_NEW
,
//创建一个新的文件，如果该文件已经存在失败。
DELETE_ON_CLOSE
,
//在jvm关闭的时候删除文件
SPARSE
,
//稀疏文件
SYNC
,
//要求将文件内容或元数据的每次更新都同步写入底层存储设备。
DSYNC
;
//要求将文件内容的每次更新都与底层存储设备同步写入
----------------------------
LinkOption
|
----------------------------
#
父级接口
CopyOption
,
OpenOption
#
枚举
NOFOLLOW_LINKS
;
//不跟踪连接
----------------------------
FileVisitOption
|
----------------------------
FOLLOW_LINKS
//跟踪连接
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