org.apache.hadoop.fs
Interfaces 
FsConstants
PathFilter
PositionedReadable
RemoteIterator
Seekable
Syncable
Classes 
AbstractFileSystem
AvroFSInput
BlockLocation
ChecksumFileSystem
CommonConfigurationKeysPublic
ContentSummary
FileChecksum
FileContext
FileStatus
FileSystem
FileSystem.Statistics
FileUtil
FileUtil.HardLink
FilterFileSystem
FSDataInputStream
FSDataOutputStream
FsServerDefaults
FsShellPermissions.Chgrp
FsShellPermissions.Chmod
FsShellPermissions.Chown
FsStatus
GlobFilter
HardLink
HardLink.LinkStats
HarFileSystem
LocalFileSystem
LocatedFileStatus
MD5MD5CRC32CastagnoliFileChecksum
MD5MD5CRC32GzipFileChecksum
Options
Options.ChecksumOpt
Options.CreateOpts
Options.CreateOpts.BlockSize
Options.CreateOpts.BufferSize
Options.CreateOpts.BytesPerChecksum
Options.CreateOpts.ChecksumParam
Options.CreateOpts.CreateParent
Options.CreateOpts.Perms
Options.CreateOpts.Progress
Options.CreateOpts.ReplicationFactor
Path
RawLocalFileSystem
Trash
TrashPolicy
Enums 
CreateFlag
HardLink.OSType
Options.Rename
Exceptions 
ChecksumException
FileAlreadyExistsException
InvalidPathException
ParentNotDirectoryException
UnsupportedFileSystemException
Errors 
FSError