Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Uses of Class java.io.FileDescriptor - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

Uses of FileDescriptor in java.io

 

Fields in java.io declared as FileDescriptor
static FileDescriptor	FileDescriptor.in           A handle to the standard input stream.
static FileDescriptor	FileDescriptor.out           A handle to the standard output stream.
static FileDescriptor	FileDescriptor.err           A handle to the standard error stream.

 

Methods in java.io that return FileDescriptor
FileDescriptor	FileInputStream.getFD()           Returns the FileDescriptor object that represents the connection to the actual file in the file system being used by this FileInputStream.
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

FileWriter.FileWriter(FileDescriptor fd)

FileInputStream.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.

FileReader.FileReader(FileDescriptor fd)

FileOutputStream.FileOutputStream(FileDescriptor fdObj)           Creates an output file stream to write to the specified file descriptor, which represents an existing connection to an actual file in the file system.

 

Uses of FileDescriptor in java.lang

 

Methods in java.lang with parameters of type FileDescriptor
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
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
protected  FileDescriptor	DatagramSocketImpl.getFileDescriptor()           Get the datagram socket file descriptor
protected  FileDescriptor	SocketImpl.getFileDescriptor()           Returns the value of this socket's fd field.