Package 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	Description
Base64Utils()

Method Summary

Modifier and Type	Method	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

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

Constructor Details

Base64Utils

public Base64Utils()

Method Details

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.