PosixFilePermissions

public final class PosixFilePermissions
extends Object

java.lang.Object
↳	java.nio.file.attribute.PosixFilePermissions

This class consists exclusively of static methods that operate on sets of PosixFilePermission objects.

Summary

Public methods
`static FileAttribute<Set<PosixFilePermission>>`	`asFileAttribute(Set<PosixFilePermission> perms)` Creates a `FileAttribute`, encapsulating a copy of the given file permissions, suitable for passing to the `createFile` or `createDirectory` methods.
`static Set<PosixFilePermission>`	`fromString(String perms)` Returns the set of permissions corresponding to a given `String` representation.
`static String`	`toString(Set<PosixFilePermission> perms)` Returns the `String` representation of a set of permissions.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public methods

asFileAttribute

Added in API level 26

public static FileAttribute<Set<PosixFilePermission>> asFileAttribute (Set<PosixFilePermission> perms)

Creates a FileAttribute, encapsulating a copy of the given file permissions, suitable for passing to the createFile or createDirectory methods.

Parameters
`perms`	`Set`: the set of permissions

Returns
`FileAttribute<Set<PosixFilePermission>>`	an attribute encapsulating the given file permissions with `name` `"posix:permissions"`

Throws
`ClassCastException`	if the set contains elements that are not of type `PosixFilePermission`

fromString

Added in API level 26

public static Set<PosixFilePermission> fromString (String perms)

Returns the set of permissions corresponding to a given String representation.

The perms parameter is a String representing the permissions. It has 9 characters that are interpreted as three sets of three. The first set refers to the owner's permissions; the next to the group permissions and the last to others. Within each set, the first character is 'r' to indicate permission to read, the second character is 'w' to indicate permission to write, and the third character is 'x' for execute permission. Where a permission is not set then the corresponding character is set to '-'.

Usage Example: Suppose we require the set of permissions that indicate the owner has read, write, and execute permissions, the group has read and execute permissions and others have none.

   Set<PosixFilePermission> perms = PosixFilePermissions.fromString("rwxr-x---");

Parameters
`perms`	`String`: string representing a set of permissions

Returns
`Set<PosixFilePermission>`	the resulting set of permissions

Throws
`IllegalArgumentException`	if the string cannot be converted to a set of permissions

See also:

toString(Set)

toString

Added in API level 26

public static String toString (Set<PosixFilePermission> perms)

Returns the String representation of a set of permissions. It is guaranteed that the returned String can be parsed by the fromString(String) method.

If the set contains null or elements that are not of type PosixFilePermission then these elements are ignored.

Parameters
`perms`	`Set`: the set of permissions

Returns
`String`	the string representation of the permission set