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Uses of Class
java.io.FileDescriptor

Packages that use 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.

Uses of FileDescriptor in java.io

Fields in java.io declared as FileDescriptor

Modifier and Type	Field and 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 and Description
FileDescriptor	RandomAccessFile.getFD() Returns the opaque file descriptor object associated with this stream.
FileDescriptor	FileOutputStream.getFD() Returns the file descriptor associated with this stream.
FileDescriptor	FileInputStream.getFD() Returns the FileDescriptor object that represents the connection to the actual file in the file system being used by this FileInputStream.

Constructor and Description

FileInputStream(FileDescriptor fdObj)
Creates a FileInputStream by using the file descriptor fdObj, 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)
Creates a new FileReader, given the FileDescriptor to read from.

FileWriter(FileDescriptor fd)
Constructs a FileWriter object associated with a file descriptor.

Uses of FileDescriptor in java.lang

Methods in java.lang with parameters of type FileDescriptor

Modifier and Type	Method and Description
void	SecurityManager.checkRead(FileDescriptor fd) Throws a SecurityException if the calling thread is not allowed to read from the specified file descriptor.
void	SecurityManager.checkWrite(FileDescriptor fd) Throws a SecurityException 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 and Description
protected FileDescriptor	SocketImpl.fd The file descriptor object for this socket.
protected FileDescriptor	DatagramSocketImpl.fd The file descriptor object.

Methods in java.net that return FileDescriptor

Modifier and Type	Method and Description
protected FileDescriptor	SocketImpl.getFileDescriptor() Returns the value of this socket's fd field.
protected FileDescriptor	DatagramSocketImpl.getFileDescriptor() Gets the datagram socket file descriptor.