org.zoolu.util

Class Base64

java.lang.Object

org.zoolu.util.Base64

public class Base64
extends java.lang.Object

Base64 encoder and decoder. It can be used for base64-encoding a byte array and/or for base64-decoding a base64 string.

This implementation seems to be faster than the one provided by Sun through classes sun.misc.BASE64Encoder and sun.misc.BASE64Decoder. (the comparison has been done on JDK1.4.2 VM for Windows).

Note: The performances could be further increased by implementing the char-to-byte conversion (i.e. the base64 decoding) by using a proper static mapping array.

Constructor Summary

Constructors

Constructor and Description
Base64()

Method Summary

Modifier and Type	Method and Description
static byte[]	decode(java.lang.String str64) Decodes a given base64 string.
static java.lang.String	encode(byte[] input) Encodes in base64 a given array of bytes.
static java.lang.String	justify(java.lang.String str, int len) Justifies a string fitting a given line length.
static java.lang.String	trim(java.lang.String str) Trims a string removing all non-base64 chars.

Methods inherited from class java.lang.Object

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

Constructor Detail

Base64

public Base64()

Method Detail

encode

public static java.lang.String encode(byte[] input)

Encodes in base64 a given array of bytes.

justify

public static java.lang.String justify(java.lang.String str,
                                       int len)

Justifies a string fitting a given line length.

trim

public static java.lang.String trim(java.lang.String str)

Trims a string removing all non-base64 chars.

decode

public static byte[] decode(java.lang.String str64)

Decodes a given base64 string.