Package com.lowagie.text.pdf

Class MappedRandomAccessFile

java.lang.Object

com.lowagie.text.pdf.MappedRandomAccessFile

All Implemented Interfaces:

AutoCloseable

public class MappedRandomAccessFile
extends Object
implements AutoCloseable

A MappedByteBuffer wrapped as a RandomAccessFile

Author:

Joakim Sandstroem Created on 6.9.2006

Constructor Summary

Constructors

Constructor	Description
MappedRandomAccessFile(String filename, String mode)	Constructs a new MappedRandomAccessFile instance

Method Summary

Modifier and Type	Method	Description
static boolean	clean(ByteBuffer buffer)	invokes the clean method on the ByteBuffer's cleaner
void	close()	Cleans the mapped bytebuffer and closes the channel
protected void	finalize()	invokes the close method
FileChannel	getChannel()
long	getFilePointer()
long	length()
int	read()
int	read(byte[] bytes, int off, int len)
void	seek(long pos)

Methods inherited from class java.lang.Object

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

Constructor Details

MappedRandomAccessFile

public MappedRandomAccessFile(String filename,
 String mode)
                       throws IOException

Constructs a new MappedRandomAccessFile instance

Parameters:

filename - String

mode - String r, w or rw

Throws:

FileNotFoundException - on error

IOException - on error

Method Details

getChannel

public FileChannel getChannel()

Returns:

FileChannel

Since:

2.0.8

read

public int read()

Returns:

int next integer or -1 on EOF

See Also:

• RandomAccessFile.read()

read

public int read(byte[] bytes,
 int off,
 int len)

Parameters:

bytes - byte[]

off - int offset

len - int length

Returns:

int bytes read or -1 on EOF

See Also:

• RandomAccessFile.read(byte[], int, int)

getFilePointer

public long getFilePointer()

Returns:

long

See Also:

• RandomAccessFile.getFilePointer()

seek

public void seek(long pos)

Parameters:

pos - long position

See Also:

• RandomAccessFile.seek(long)

length

public long length()

Returns:

long length

See Also:

• RandomAccessFile.length()

close

public void close()
           throws IOException

Cleans the mapped bytebuffer and closes the channel

Specified by:

close in interface AutoCloseable

Throws:

IOException - on error

See Also:

• RandomAccessFile.close()

finalize

protected void finalize()
                 throws Throwable

invokes the close method

Overrides:

finalize in class Object

Throws:

Throwable

See Also:

• Object.finalize()

clean

public static boolean clean(ByteBuffer buffer)

invokes the clean method on the ByteBuffer's cleaner

Parameters:

buffer - ByteBuffer

Returns:

boolean true on success