Uses of Class
java.io.FileDescriptor
Package | Description |
---|---|
java.io |
Provides for system input and output through data streams,
serialization and the file system.
|
java.lang |
Provides classes that are fundamental to the design of the Java
programming language.
|
java.net |
Provides the classes for implementing networking applications.
|
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Uses of FileDescriptor in java.io
Fields in java.io declared as FileDescriptor Modifier and Type Field Description static FileDescriptor
FileDescriptor. err
A handle to the standard error stream.static FileDescriptor
FileDescriptor. in
A handle to the standard input stream.static FileDescriptor
FileDescriptor. out
A handle to the standard output stream.Methods in java.io that return FileDescriptor Modifier and Type Method Description FileDescriptor
FileInputStream. getFD()
Returns theFileDescriptor
object that represents the connection to the actual file in the file system being used by thisFileInputStream
.FileDescriptor
FileOutputStream. getFD()
Returns the file descriptor associated with this stream.FileDescriptor
RandomAccessFile. getFD()
Returns the opaque file descriptor object associated with this stream.Constructors in java.io with parameters of type FileDescriptor Constructor Description FileInputStream(FileDescriptor fdObj)
Creates aFileInputStream
by using the file descriptorfdObj
, which represents an existing connection to an actual file in the file system.FileOutputStream(FileDescriptor fdObj)
Creates a file output stream to write to the specified file descriptor, which represents an existing connection to an actual file in the file system.FileReader(FileDescriptor fd)
FileWriter(FileDescriptor fd)
Constructs aFileWriter
given a file descriptor, using the platform's default charset. -
Uses of FileDescriptor in java.lang
Methods in java.lang with parameters of type FileDescriptor Modifier and Type Method Description void
SecurityManager. checkRead(FileDescriptor fd)
Throws aSecurityException
if the calling thread is not allowed to read from the specified file descriptor.void
SecurityManager. checkWrite(FileDescriptor fd)
Throws aSecurityException
if the calling thread is not allowed to write to the specified file descriptor. -
Uses of FileDescriptor in java.net
Fields in java.net declared as FileDescriptor Modifier and Type Field Description protected FileDescriptor
DatagramSocketImpl. fd
The file descriptor object.protected FileDescriptor
SocketImpl. fd
The file descriptor object for this socket.Methods in java.net that return FileDescriptor Modifier and Type Method Description protected FileDescriptor
DatagramSocketImpl. getFileDescriptor()
Gets the datagram socket file descriptor.protected FileDescriptor
SocketImpl. getFileDescriptor()
Returns the value of this socket'sfd
field.