edu.jhu.tmaj.util
Class Base64Coder

java.lang.Object
  edu.jhu.tmaj.util.Base64Coder

public class Base64Coder
extends java.lang.Object

A Base64 Encoder/Decoder.

This class is used to encode and decode data in Base64 format as described in RFC 1521.

This is "Open Source" software and released under the GNU/LGPL license.
It is provided "as is" without warranty of any kind.
Copyright 2003: Christian d'Heureuse, Inventec Informatik AG, Switzerland.
Home page: www.source-code.biz

Version history:
2003-07-22 Christian d'Heureuse (chdh): Module created.
2005-08-11 chdh: Lincense changed from GPL to LGPL.
2006-11-21 chdh:
Method encode(String) renamed to encodeString(String).
Method decode(String) renamed to decodeString(String).
New method encode(byte[],int) added.
New method decode(String) added.
Downloaded from: http://www.source-code.biz/snippets/java/2.htm

Method Summary

static byte[]	decode(char[] in) Decodes a byte array from Base64 format.
static byte[]	decode(java.lang.String s) Decodes a byte array from Base64 format.
static java.lang.String	decodeString(java.lang.String s) Decodes a string from Base64 format.
static char[]	encode(byte[] in) Encodes a byte array into Base64 format.
static char[]	encode(byte[] in, int iLen) Encodes a byte array into Base64 format.
static java.lang.String	encodeString(java.lang.String s) Encodes a string into Base64 format.

Methods inherited from class java.lang.Object

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

Method Detail

encodeString

public static java.lang.String encodeString(java.lang.String s)

Encodes a string into Base64 format. No blanks or line breaks are inserted.

Parameters:

s - a String to be encoded.

Returns:

A String with the Base64 encoded data.

encode

public static char[] encode(byte[] in)

Encodes a byte array into Base64 format. No blanks or line breaks are inserted.

Parameters:

in - an array containing the data bytes to be encoded.

Returns:

A character array with the Base64 encoded data.

encode

public static char[] encode(byte[] in,
                            int iLen)

Encodes a byte array into Base64 format. No blanks or line breaks are inserted.

Parameters:

in - an array containing the data bytes to be encoded.

iLen - number of bytes to process in in.

Returns:

A character array with the Base64 encoded data.

decodeString

public static java.lang.String decodeString(java.lang.String s)

Decodes a string from Base64 format.

Parameters:

s - a Base64 String to be decoded.

Returns:

A String containing the decoded data.

Throws:

java.lang.IllegalArgumentException - if the input is not valid Base64 encoded data.

decode

public static byte[] decode(java.lang.String s)

Decodes a byte array from Base64 format.

Parameters:

s - a Base64 String to be decoded.

Returns:

An array containing the decoded data bytes.

Throws:

java.lang.IllegalArgumentException - if the input is not valid Base64 encoded data.

decode

public static byte[] decode(char[] in)

Decodes a byte array from Base64 format. No blanks or line breaks are allowed within the Base64 encoded data.

Parameters:

in - a character array containing the Base64 encoded data.

Returns:

An array containing the decoded data bytes.

Throws:

java.lang.IllegalArgumentException - if the input is not valid Base64 encoded data.