org.jppf.utils.base64

Class Base64

java.lang.Object

org.jppf.utils.base64.Base64

public final class Base64
extends Object

Encodes and decodes to and from Base64 notation.

Homepage: http://iharder.net/base64.

Example:

String encoded = Base64.encode( myByteArray );
byte[] myByteArray = Base64.decode( encoded );

The options parameter, which appears in a few places, is used to pass several pieces of information to the encoder. In the "higher level" methods such as encodeBytes( bytes, options ) the options parameter can be used to indicate such things as first gzipping the bytes before encoding them, not inserting linefeeds, and encoding using the URL-safe and Ordered dialects.

Note, according to RFC3548, Section 2.1, implementations should not add line feeds unless explicitly told to do so. I've got Base64 set to this behavior now, although earlier versions broke lines by default.

The constants defined in Base64 can be OR-ed together to combine options, so you might make a call like this:

String encoded = Base64.encodeBytes( mybytes, Base64.GZIP | Base64.DO_BREAK_LINES );

to compress the data before encoding it and then making the output have newline characters.

Also...

String encoded = Base64.encodeBytes( crazyString.getBytes() );

I am placing this code in the Public Domain. Do with it as you will. This software comes with no guarantees or warranties but with plenty of well-wishing instead! Please visit http://iharder.net/base64 periodically to check for updates or to contribute improvements.

Field Summary

Fields

Modifier and Type	Field and Description
static int	DECODE Specify decoding in first bit.
static int	DO_BREAK_LINES Do break lines when encoding.
static int	DONT_GUNZIP Specify that gzipped data should not be automatically gunzipped.
static int	ENCODE Specify encoding in first bit.
static int	GZIP Specify that data should be gzip-compressed in second bit.
static int	NO_OPTIONS No options specified.
static int	ORDERED Encode using the special "ordered" dialect of Base64 described here: http://www.faqs.org/qa/rfcc-1940.html.
static int	URL_SAFE Encode using Base64-like encoding that is URL- and Filename-safe as described in Section 4 of RFC3548: http://www.faqs.org/rfcs/rfc3548.html.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

NO_OPTIONS

public static final int NO_OPTIONS

No options specified. Value is zero.

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Constant Field Values

ENCODE

public static final int ENCODE

Specify encoding in first bit. Value is one.

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Constant Field Values

DECODE

public static final int DECODE

Specify decoding in first bit. Value is zero.

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Constant Field Values

GZIP

public static final int GZIP

Specify that data should be gzip-compressed in second bit. Value is two.

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Constant Field Values

DONT_GUNZIP

public static final int DONT_GUNZIP

Specify that gzipped data should not be automatically gunzipped.

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Constant Field Values

DO_BREAK_LINES

public static final int DO_BREAK_LINES

Do break lines when encoding. Value is 8.

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Constant Field Values

URL_SAFE

public static final int URL_SAFE

Encode using Base64-like encoding that is URL- and Filename-safe as described in Section 4 of RFC3548: http://www.faqs.org/rfcs/rfc3548.html. It is important to note that data encoded this way is not officially valid Base64, or at the very least should not be called Base64 without also specifying that is was encoded using the URL- and Filename-safe dialect.

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Constant Field Values

ORDERED

public static final int ORDERED

Encode using the special "ordered" dialect of Base64 described here: http://www.faqs.org/qa/rfcc-1940.html.

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Constant Field Values