Class Base64OutputStream

java.lang.Object

java.io.OutputStream

org.simpleframework.common.encode.Base64OutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class Base64OutputStream
extends OutputStream

The Base64OutputStream is used to write base64 text in the form of a string through a conventional output stream. This is provided for convenience so that it is possible to encode and decode binary data as base64 for implementations that would normally use a binary format.

Author:

Niall Gallagher

See Also:

• Base64Encoder

Constructor Summary

Constructors

Constructor	Description
Base64OutputStream()	Constructor for the Base64OutputStream object.
Base64OutputStream(int capacity)	Constructor for the Base64OutputStream object.

Method Summary

Modifier and Type	Method	Description
void	close()	This is used to close the stream and encode the buffered bytes to base64.
String	toString()	This returns the base64 text encoded from the bytes written to the stream.
void	write(byte[] array, int offset, int length)	This method is used to write data as base64 to an internal buffer.
void	write(int octet)	This method is used to write data as base64 to an internal buffer.

Methods inherited from class OutputStream

flush, nullOutputStream, write

Methods inherited from class Object

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

Constructor Details

Base64OutputStream

public Base64OutputStream()

Constructor for the Base64OutputStream object. A stream created with this constructor uses an initial capacity of one kilobyte, the capacity is increased as bytes are written.

Base64OutputStream

public Base64OutputStream(int capacity)

Constructor for the Base64OutputStream object. A stream created with this constructor can have an initial capacity specified. Typically it is a good rule of thumb to use a capacity that is just over an additional third of the source binary data.

Parameters:

capacity - this is the initial capacity of the buffer

Method Details

write

public void write(int octet)
           throws IOException

This method is used to write data as base64 to an internal buffer. The toString method can be used to acquire the text encoded from the written binary data.

Specified by:

write in class OutputStream

Parameters:

octet - the octet to encode in to the internal buffer

Throws:

IOException

write

public void write(byte[] array,
 int offset,
 int length)
           throws IOException

This method is used to write data as base64 to an internal buffer. The toString method can be used to acquire the text encoded from the written binary data.

Overrides:

write in class OutputStream

Parameters:

array - the octets to encode to the internal buffer

offset - this is the offset in the array to encode from

length - this is the number of bytes to be encoded

Throws:

IOException

close

public void close()
           throws IOException

This is used to close the stream and encode the buffered bytes to base64. Once this method is invoked no further data can be encoded with the stream. The toString method can be used to acquire the base64 encoded text.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class OutputStream

Throws:

IOException

toString

public String toString()

This returns the base64 text encoded from the bytes written to the stream. This is the primary means for acquiring the base64 encoded text once the stream has been closed.

Overrides:

toString in class Object

Returns:

this returns the base64 text encoded