oracle.dss.util.xdo.common.io
Interface RandomAccessFileOrMemory

All Known Implementing Classes:

ByteArray

public interface RandomAccessFileOrMemory

Random access interface for File or Memory The following classes implement this interface: - BufferedRandomAccessFile - ByteArray

Field Summary

static java.lang.String

RCS_ID

Method Summary

void	close() Close
long	getFilePointer() Returns the position.
long	length() Returns the length of this file or memory.
int	read() Read a byte of data
int	read(byte[] b) Reads up to b.length bytes of data from this file into an array of bytes.
int	read(byte[] b, int off, int len) Reads up to len bytes of data from this file into an array of bytes.
void	seek(long pos) Seek the position
void	setLength(long newLength) Set the file length or memory size.
int	skipBytes(int n) Attempts to skip over n bytes of input discarding the skipped bytes.
void	write(byte[] b) Writes b.length bytes from the specified byte array
void	write(byte[] b, int off, int len) Writes len bytes from the specified byte array.
void	write(int b) Writes the specified byte.

Field Detail

RCS_ID

static final java.lang.String RCS_ID

See Also:

Constant Field Values

Method Detail

read

int read()
         throws java.io.IOException

Read a byte of data

Returns:

the next byte of data, or -1 if the end of the file has been reached

Throws:

java.io.IOException

read

int read(byte[] b)
         throws java.io.IOException

Reads up to b.length bytes of data from this file into an array of bytes. This method blocks until at least one byte of input is available.

Parameters:

buf -

Returns:

the total number of bytes read into the buffer, or -1 if there is no more data because the end of this file has been reached

Throws:

java.io.IOException

read

int read(byte[] b,
         int off,
         int len)
         throws java.io.IOException

Reads up to len bytes of data from this file into an array of bytes. This method blocks until at least one byte of input is available.

Parameters:

b - the buffer into which the data is read.

off - the start offset of the data.

len - the maximum number of bytes read.

Returns:

the total number of bytes read into the buffer, or -1 if there is no more data because the end of the file has been reached.

Throws:

java.io.IOException

skipBytes

int skipBytes(int n)
              throws java.io.IOException

Attempts to skip over n bytes of input discarding the skipped bytes.

Parameters:

n - the number of bytes to be skipped.

Returns:

the actual number of bytes skipped.

Throws:

java.io.IOException

write

void write(int b)
           throws java.io.IOException

Writes the specified byte.

Parameters:

b - the byte to be written.

Throws:

java.io.IOException

write

void write(byte[] b)
           throws java.io.IOException

Writes b.length bytes from the specified byte array

Parameters:

b - the data.

Throws:

java.io.IOException

write

void write(byte[] b,
           int off,
           int len)
           throws java.io.IOException

Writes len bytes from the specified byte array.

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

java.io.IOException

getFilePointer

long getFilePointer()

Returns the position.

Returns:

seek

void seek(long pos)
          throws java.io.IOException

Seek the position

Parameters:

pos -

Throws:

java.io.IOException

length

long length()
            throws java.io.IOException

Returns the length of this file or memory.

Returns:

the length of this file or memory, measured in bytes.

Throws:

java.io.IOException

setLength

void setLength(long newLength)
               throws java.io.IOException

Set the file length or memory size.

Throws:

java.io.IOException

close

void close()
           throws java.io.IOException

Close

Throws:

java.io.IOException