OpenJDK 27 · java.nio.file.attribute.PosixFilePermissions

Access	Constructor and Description
private	PosixFilePermissions()

Method Summary

Modifier and Type	Method and Description
public static FileAttribute<Set<PosixFilePermission>>	Returns: an attribute encapsulating the given file permissions with `name` `"posix:permissions"` asFileAttribute(Set<PosixFilePermission> the set of permissions perms) Creates a `FileAttribute`, encapsulating a copy of the given file permissions, suitable for passing to the `createFile` or `createDirectory` methods.
public static Set<PosixFilePermission>	Returns: the resulting set of permissions fromString(String string representing a set of permissions perms) Returns the set of permissions corresponding to a given `String` representation.
private static boolean	isR(char c)
private static boolean	isSet(char c, char setValue)
private static boolean	isW(char c)
private static boolean	isX(char c)
public static String	Returns: the string representation of the permission set toString(Set<PosixFilePermission> the set of permissions perms) Returns the `String` representation of a set of permissions.
private static void	writeBits(StringBuilder sb, boolean r, boolean w, boolean x)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

PosixFilePermissions	back to summary
private PosixFilePermissions()

Method Detail

asFileAttribute back to summary

asFileAttribute	back to summary
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<PosixFilePermission> the set of permissions Returns:FileAttribute<Set<PosixFilePermission>> an attribute encapsulating the given file permissions with `name` `"posix:permissions"` Exceptions ClassCastException: if the set contains elements that are not of type `PosixFilePermission`

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<PosixFilePermission>: the set of permissions

Returns:FileAttribute<Set<PosixFilePermission>>

an attribute encapsulating the given file permissions with name "posix:permissions"

Exceptions

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

fromString back to summary

fromString	back to summary
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---");` Set<PosixFilePermission> perms = PosixFilePermissions.fromString("rwxr-x---"); Parameters perms:String string representing a set of permissions Returns:Set<PosixFilePermission> the resulting set of permissions Exceptions IllegalArgumentException: if the string cannot be converted to a set of permissions See Also `toString(Set)`

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

Exceptions

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

See Also

toString(Set)

isR	back to summary
private static boolean isR(char c)

isSet	back to summary
private static boolean isSet(char c, char setValue)

isW	back to summary
private static boolean isW(char c)

isX	back to summary
private static boolean isX(char c)

toString back to summary

toString	back to summary
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` method. If the set contains `null` or elements that are not of type `PosixFilePermission` then these elements are ignored. Parameters perms:Set<PosixFilePermission> the set of permissions Returns:String the string representation of the permission set

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 method.

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

Parameters

perms:Set<PosixFilePermission>: the set of permissions

Returns:String

the string representation of the permission set

writeBits	back to summary
private static void writeBits(StringBuilder sb, boolean r, boolean w, boolean x)

public final Class PosixFilePermissions

Constructor Summary

Method Summary

Constructor Detail

Method Detail