com.google.gwt.user.server

Class Base64Utils

java.lang.Object

com.google.gwt.user.server.Base64Utils

public class Base64Utils
extends Object

A utility to decode and encode byte arrays as Strings, using only "safe" characters.

Constructor Summary

Constructors

Constructor and Description
Base64Utils()

Method Summary

Modifier and Type	Method and Description
static byte[]	fromBase64(String data) Decode a base64 string into a byte array.
static long	longFromBase64(String value) Decode a base64 string into a long value.
static String	toBase64(byte[] data) Converts a byte array into a base 64 encoded string.
static String	toBase64(long value) Return a string containing a base-64 encoded version of the given long value.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Constructor Detail

Base64Utils

public Base64Utils()

Method Detail

fromBase64

public static byte[] fromBase64(String data)

Decode a base64 string into a byte array.

Parameters:

data - the encoded data.

Returns:

a byte array.

See Also:

fromBase64(String)

longFromBase64

public static long longFromBase64(String value)

Decode a base64 string into a long value.

toBase64

public static String toBase64(byte[] data)

Converts a byte array into a base 64 encoded string. Null is encoded as null, and an empty array is encoded as an empty string. Otherwise, the byte data is read 3 bytes at a time, with bytes off the end of the array padded with zeros. Each 24-bit chunk is encoded as 4 characters from the sequence [A-Za-z0-9$_]. If one of the source positions consists entirely of padding zeros, an '=' character is used instead.

Parameters:

data - a byte array, which may be null or empty

Returns:

a String

toBase64

public static String toBase64(long value)

Return a string containing a base-64 encoded version of the given long value. Leading groups of all zero bits are omitted.