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oracle.dss.util.xdo.common.io
Class ByteArray

java.lang.Object
oracle.dss.util.xdo.common.io.ByteArray

All Implemented Interfaces:

RandomAccessFileOrMemory

public class ByteArray

extends java.lang.Object

implements RandomAccessFileOrMemory

Byte Array handling class. Using this class, you can access memory like RandomAccessFile.

Note)
Write methods are not implemented yet.

Field Summary

static java.lang.String

RCS_ID

Constructor Summary

ByteArray(byte[] buf)

Method Summary

void	close() Close (Calling this method is optional for this class)
long	getFilePointer() Returns the position.
long	length() Returns the length of this byte array.
int	read() Read 1 byte
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.

Methods inherited from class java.lang.Object

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

Field Detail

RCS_ID

public static final java.lang.String RCS_ID

See Also:

Constant Field Values

Constructor Detail

ByteArray

public ByteArray(byte[] buf)

Method Detail

read

public int read()
         throws java.io.IOException

Read 1 byte

Specified by:

read in interface RandomAccessFileOrMemory

Returns:

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

Throws:

java.io.IOException

read

public 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.

Specified by:

read in interface RandomAccessFileOrMemory

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

public 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.

Specified by:

read in interface RandomAccessFileOrMemory

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

seek

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

Seek the position

Specified by:

seek in interface RandomAccessFileOrMemory

Parameters:

pos -

Throws:

java.io.IOException

getFilePointer

public long getFilePointer()

Returns the position.

Specified by:

getFilePointer in interface RandomAccessFileOrMemory

Returns:

skipBytes

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

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

Specified by:

skipBytes in interface RandomAccessFileOrMemory

Parameters:

n - the number of bytes to be skipped.

Returns:

the actual number of bytes skipped.

Throws:

java.io.IOException

length

public long length()
            throws java.io.IOException

Returns the length of this byte array.

Specified by:

length in interface RandomAccessFileOrMemory

Returns:

the length of this byte array, measured in bytes.

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Close (Calling this method is optional for this class)

Specified by:

close in interface RandomAccessFileOrMemory

Throws:

java.io.IOException

write

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

Description copied from interface: RandomAccessFileOrMemory

Writes the specified byte.

Specified by:

write in interface RandomAccessFileOrMemory

Parameters:

b - the byte to be written.

Throws:

java.io.IOException

write

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

Description copied from interface: RandomAccessFileOrMemory

Writes b.length bytes from the specified byte array

Specified by:

write in interface RandomAccessFileOrMemory

Parameters:

b - the data.

Throws:

java.io.IOException

write

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

Description copied from interface: RandomAccessFileOrMemory

Writes len bytes from the specified byte array.

Specified by:

write in interface RandomAccessFileOrMemory

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

java.io.IOException

setLength

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

Description copied from interface: RandomAccessFileOrMemory

Set the file length or memory size.

Specified by:

setLength in interface RandomAccessFileOrMemory

Throws:

java.io.IOException

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