Class Overview
Wraps a Unix file descriptor. It's possible to get the file descriptor used by some
classes (such as FileInputStream, FileOutputStream,
and RandomAccessFile), and then create new streams that point to the same
file descriptor.
Summary
| Public Constructors |
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FileDescriptor()
Constructs a new invalid FileDescriptor.
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| Public Methods |
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void
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sync()
Ensures that data which is buffered within the underlying implementation
is written out to the appropriate device before returning.
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String
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toString()
Returns a string containing a concise, human-readable description of this
object.
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boolean
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valid()
Tests whether this FileDescriptor is valid.
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[Expand]
Inherited Methods |
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From class
java.lang.Object
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Object
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clone()
Creates and returns a copy of this Object.
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boolean
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equals(Object o)
Compares this instance with the specified object and indicates if they
are equal.
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void
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finalize()
Invoked when the garbage collector has detected that this instance is no longer reachable.
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final
Class<?>
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getClass()
Returns the unique instance of Class that represents this
object's class. |
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int
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hashCode()
Returns an integer hash code for this object.
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final
void
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notify()
Causes a thread which is waiting on this object's monitor (by means of
calling one of the wait() methods) to be woken up.
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final
void
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notifyAll()
Causes all threads which are waiting on this object's monitor (by means
of calling one of the wait() methods) to be woken up.
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String
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toString()
Returns a string containing a concise, human-readable description of this
object.
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final
void
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wait()
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.
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final
void
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wait(long millis, int nanos)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
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final
void
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wait(long millis)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
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Fields
Public Constructors
public
FileDescriptor
()
Constructs a new invalid FileDescriptor.
Public Methods
public
void
sync
()
Ensures that data which is buffered within the underlying implementation
is written out to the appropriate device before returning.
public
String
toString
()
Returns a string containing a concise, human-readable description of this
object. Subclasses are encouraged to override this method and provide an
implementation that takes into account the object's type and data. The
default implementation is equivalent to the following expression:
getClass().getName() + '@' + Integer.toHexString(hashCode())
See Writing a useful
toString method
if you intend implementing your own toString method.
Returns
- a printable representation of this object.
public
boolean
valid
()
Tests whether this FileDescriptor is valid.
