| Package | Description | 
|---|---|
| java.nio.file | Defines interfaces and classes for the Java virtual machine to access files,
 file attributes, and file systems. | 
| java.nio.file.attribute | Interfaces and classes providing access to file and file system attributes. | 
| Modifier and Type | Method and Description | 
|---|---|
| static UserPrincipal | Files. getOwner(Path path,
        LinkOption... options)Returns the owner of a file. | 
| Modifier and Type | Method and Description | 
|---|---|
| static Path | Files. setOwner(Path path,
        UserPrincipal owner)Updates the file owner. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | GroupPrincipalA  UserPrincipalrepresenting a group identity, used to
 determine access rights to objects in a file system. | 
| Modifier and Type | Method and Description | 
|---|---|
| UserPrincipal | FileOwnerAttributeView. getOwner()Read the file owner. | 
| abstract UserPrincipal | UserPrincipalLookupService. lookupPrincipalByName(String name)Lookup a user principal by name. | 
| UserPrincipal | PosixFileAttributes. owner()Returns the owner of the file. | 
| UserPrincipal | AclEntry. principal()Returns the principal component. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | FileOwnerAttributeView. setOwner(UserPrincipal owner)Updates the file owner. | 
| AclEntry.Builder | AclEntry.Builder. setPrincipal(UserPrincipal who)Sets the principal component of this builder. | 
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