# Uses of Interface
java.nio.file.attribute.GroupPrincipal

Packages that use GroupPrincipal
Package | Description
--- | ---
java.nio.file.attribute | Interfaces and classes providing access to file and file system attributes.

## Uses of GroupPrincipal in java.nio.file.attribute

Methods in java.nio.file.attribute that return GroupPrincipal
Modifier and Type | Method | Description
--- | --- | ---
`GroupPrincipal` | PosixFileAttributes.`group()` | Returns the group owner of the file.
`abstract GroupPrincipal` | UserPrincipalLookupService.`lookupPrincipalByGroupName​(String group)` | Lookup a group principal by group name.

Methods in java.nio.file.attribute with parameters of type GroupPrincipal
Modifier and Type | Method | Description
--- | --- | ---
`void` | PosixFileAttributeView.`setGroup​(GroupPrincipal group)` | Updates the file group-owner.