类层次结构
- java.lang.Object 
       
- java.nio.file.attribute.AclEntry
 - java.nio.file.attribute.AclEntry.Builder
 - java.nio.file.attribute.FileTime (implements java.lang.Comparable<T>)
 - java.nio.file.attribute.PosixFilePermissions
 - java.lang.Throwable (implements java.io.Serializable) 
         
- java.lang.异常 
           
- java.io.IOException 
             
- java.nio.file.attribute.UserPrincipalNotFoundException
 
 
 - java.io.IOException 
             
 
 - java.lang.异常 
           
 - java.nio.file.attribute.UserPrincipalLookupService
 
 
Interface Hierarchy
- java.nio.file.attribute.AttributeView 
       
- java.nio.file.attribute.FileAttributeView 
         
- java.nio.file.attribute.BasicFileAttributeView 
           
- java.nio.file.attribute.DosFileAttributeView
 - java.nio.file.attribute.PosixFileAttributeView (also extends java.nio.file.attribute.FileOwnerAttributeView)
 
 - java.nio.file.attribute.FileOwnerAttributeView 
           
- java.nio.file.attribute.AclFileAttributeView
 - java.nio.file.attribute.PosixFileAttributeView (also extends java.nio.file.attribute.BasicFileAttributeView)
 
 - java.nio.file.attribute.UserDefinedFileAttributeView
 
 - java.nio.file.attribute.BasicFileAttributeView 
           
 - java.nio.file.attribute.FileStoreAttributeView
 
 - java.nio.file.attribute.FileAttributeView 
         
 - java.nio.file.attribute.BasicFileAttributes 
       
- java.nio.file.attribute.DosFileAttributes
 - java.nio.file.attribute.PosixFileAttributes
 
 - java.nio.file.attribute.FileAttribute<T>
 - java.security.Principal 
       
- java.nio.file.attribute.UserPrincipal 
         
- java.nio.file.attribute.GroupPrincipal
 
 
 - java.nio.file.attribute.UserPrincipal 
         
 
Enum Hierarchy
- java.lang.Object 
       
- java.lang.Enum<E> (implements java.lang.Comparable<T>, java.io.Serializable) 
         
- java.nio.file.attribute.AclEntryFlag
 - java.nio.file.attribute.AclEntryPermission
 - java.nio.file.attribute.AclEntryType
 - java.nio.file.attribute.PosixFilePermission
 
 
 - java.lang.Enum<E> (implements java.lang.Comparable<T>, java.io.Serializable)