com.devexperts.util

Class Base64

java.lang.Object

com.devexperts.util.Base64

public final class Base64
extends Object

Utility class for Base64 encoding and decoding. Supports configuration with arbitrary alphabet. Instances for common alphabets (as specified by RFC 2045 and RFC 4648) are provided via static fields DEFAULT and URLSAFE.

Field Summary

Fields

Modifier and Type	Field and Description
static Base64	DEFAULT
static Base64	DEFAULT_UNPADDED
static Base64	URLSAFE
static Base64	URLSAFE_UNPADDED

Constructor Summary

Constructors

Constructor and Description
Base64(String alphabet) Creates Base64 coder with a given alphabet.

Method Summary

Modifier and Type	Method and Description
byte[]	decode(String source) Decodes source string.
String	encode(byte[] source) Encodes source bytes.
String	getAlphabet() Returns Bas64 alphabet that is used by this coder.
String	toString() Returns a string representation of the object.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT

public static final Base64 DEFAULT

URLSAFE

public static final Base64 URLSAFE

DEFAULT_UNPADDED

public static final Base64 DEFAULT_UNPADDED

URLSAFE_UNPADDED

public static final Base64 URLSAFE_UNPADDED

Constructor Detail

Base64

public Base64(String alphabet)

Creates Base64 coder with a given alphabet.

Parameters:

alphabet - an alphabet of 64 characters.

Method Detail

getAlphabet

public String getAlphabet()

Returns Bas64 alphabet that is used by this coder.

Returns:

Bas64 alphabet that is used by this coder.

encode

public String encode(byte[] source)

Encodes source bytes.

Parameters:

source - source bytes.

Returns:

encoded string.

decode

public byte[] decode(String source)

Decodes source string.

Parameters:

source - source string.

Returns:

decoded bytes.

Throws:

InvalidFormatException - if the string do not have the correct Base64 format.

toString

public String toString()

Returns a string representation of the object.

Overrides:

toString in class Object

Returns:

a string representation of the object.