it.unimi.dsi.io

Class NullInputStream

java.lang.Object

java.io.InputStream

it.unimi.dsi.fastutil.io.MeasurableInputStream

it.unimi.dsi.io.NullInputStream

All Implemented Interfaces:

MeasurableStream, RepositionableStream, Closeable, Serializable, AutoCloseable

public class NullInputStream
extends MeasurableInputStream
implements RepositionableStream, Serializable

End-of-stream-only input stream.

This stream has length 0, and will always return end-of-file on any read attempt.

This class is a singleton. You cannot create a null input stream, but you can obtain an instance of this class using getInstance().

Since:

0.8

Author:

Sebastiano Vigna

See Also:

Serialized Form

Method Summary

Methods

Modifier and Type	Method and Description
static NullInputStream	getInstance() Returns the only instance of this class.
long	length()
long	position()
void	position(long position)
int	read()

Methods inherited from class java.io.InputStream

available, close, mark, markSupported, read, read, reset, skip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

read

public int read()

Specified by:

read in class InputStream

getInstance

public static NullInputStream getInstance()

Returns the only instance of this class.

Returns:

the only instance of this class.

length

public long length()

Specified by:

length in interface MeasurableStream

position

public long position()

Specified by:

position in interface MeasurableStream

Specified by:

position in interface RepositionableStream

position

public void position(long position)
              throws IOException

Specified by:

position in interface RepositionableStream

Throws:

IOException