UserPrincipal (Java SE 9 & JDK 9 )
Keywords: java.nio.file.attribute.UserPrincipal interface

Module java.base
Package java.nio.file.attribute

## Interface UserPrincipal

- All Superinterfaces:
    `Principal`
  All Known Subinterfaces:
    `GroupPrincipal`

      public interface UserPrincipal
      extends Principal

  A `Principal` representing an identity used to determine access rights to objects in a file system.

  On many platforms and file systems an entity requires appropriate access rights or permissions in order to access objects in a file system. The access rights are generally performed by checking the identity of the entity. For example, on implementations that use Access Control Lists (ACLs) to enforce privilege separation then a file in the file system may have an associated ACL that determines the access rights of identities specified in the ACL.

  A `UserPrincipal` object is an abstract representation of an identity. It has a `name` that is typically the username or account name that it represents. User principal objects may be obtained using a `UserPrincipalLookupService`, or returned by `FileAttributeView` implementations that provide access to identity related attributes. For example, the `AclFileAttributeView` and `PosixFileAttributeView` provide access to a file's `owner`.

  Since:
    1.7

- - ### Method Summary

    - ### Methods inherited from interface java.security.Principal

      `equals, getName, hashCode, implies, toString`