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oracle.security.crypto.util
Class FixedByteArrayOutputStream

java.lang.Object
java.io.OutputStream
oracle.security.crypto.util.FixedByteArrayOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable

public class FixedByteArrayOutputStream

extends java.io.OutputStream

A fixed-size, unsynchronized ByteArrayOutptStream, that provides access to the internal buffer for efficiency.

Field Summary

protected byte[]	buf The buffer to contains the bytes written to this stream.
protected int	count The number of bytes written to this stream.

Constructor Summary

FixedByteArrayOutputStream(byte[] buf)
Creates a FixedByteArrayOutputStream using the given buffer.

FixedByteArrayOutputStream(int size)
Creates a FixedByteArrayOutputStream with a newly allocated buffer of the given size.

Method Summary

int	bufSize() Returns the capacity of the internal buffer.
void	close() Closes this output stream.
byte[]	getBytes() Returns a reference to the full internal buffer.
void	reset() Resets the count of bytes written to this stream to zero.
int	size() Returns the number of bytes written to this stream.
byte[]	toByteArray() Returns a newly allocated byte array of size equal to the number of valid bytes written to this stream.
void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)

Methods inherited from class java.io.OutputStream

flush

Methods inherited from class java.lang.Object

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

Field Detail

buf

protected byte[] buf

The buffer to contains the bytes written to this stream.

count

protected int count

The number of bytes written to this stream.

Constructor Detail

FixedByteArrayOutputStream

public FixedByteArrayOutputStream(int size)

Creates a FixedByteArrayOutputStream with a newly allocated buffer of the given size.

FixedByteArrayOutputStream

public FixedByteArrayOutputStream(byte[] buf)

Creates a FixedByteArrayOutputStream using the given buffer. The initial contents of buf, if any, will be ignored.

Method Detail

close

public void close()
           throws java.io.IOException

Closes this output stream. Calls to write methods after close will cause an exception to be thrown.

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.OutputStream

Throws:

java.io.IOException

reset

public void reset()

Resets the count of bytes written to this stream to zero.

size

public int size()

Returns the number of bytes written to this stream.

bufSize

public int bufSize()

Returns the capacity of the internal buffer.

toByteArray

public byte[] toByteArray()

Returns a newly allocated byte array of size equal to the number of valid bytes written to this stream.

getBytes

public byte[] getBytes()

Returns a reference to the full internal buffer. If the buffer is not full, an IllegalStateException is thrown.

write

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

Overrides:

write in class java.io.OutputStream

Throws:

java.io.IOException

write

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

Overrides:

write in class java.io.OutputStream

Throws:

java.io.IOException

write

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

Specified by:

write in class java.io.OutputStream

Throws:

java.io.IOException

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