public class Base64 extends Object
This class consists exclusively of static methods for obtaining encoders and decoders for the Base64 encoding scheme. The implementation of this class supports the following types of Base64 as specified in RFC 4648 and RFC 2045.
Uses "The Base64 Alphabet" as specified in Table 1 of RFC 4648 and RFC 2045 for encoding and decoding operation. The encoder does not add any line feed (line separator) character. The decoder rejects data that contains characters outside the base64 alphabet.
Uses the "URL and Filename safe Base64 Alphabet" as specified in Table 2 of RFC 4648 for encoding and decoding. The encoder does not add any line feed (line separator) character. The decoder rejects data that contains characters outside the base64 alphabet.
Uses the "The Base64 Alphabet" as specified in Table 1 of RFC 2045 for encoding and decoding operation. The encoded output must be represented in lines of no more than 76 characters each and uses a carriage return '\r' followed immediately by a linefeed '\n' as the line separator. No line separator is added to the end of the encoded output. All line separators or other characters not found in the base64 alphabet table are ignored in decoding operation.
Unless otherwise noted, passing a null argument to a method of this class will cause a NullPointerException to be thrown.
| Modifier and Type | Class and Description |
|---|---|
static class |
Base64.Decoder This class implements a decoder for decoding byte data using the Base64 encoding scheme as specified in RFC 4648 and RFC 2045. |
static class |
Base64.Encoder This class implements an encoder for encoding byte data using the Base64 encoding scheme as specified in RFC 4648 and RFC 2045. |
public static Base64.Encoder getEncoder()
Returns a Base64.Encoder that encodes using the Basic type base64 encoding scheme.
public static Base64.Encoder getUrlEncoder()
Returns a Base64.Encoder that encodes using the URL and Filename safe type base64 encoding scheme.
public static Base64.Encoder getMimeEncoder()
Returns a Base64.Encoder that encodes using the MIME type base64 encoding scheme.
public static Base64.Encoder getMimeEncoder(int lineLength,
byte[] lineSeparator) Returns a Base64.Encoder that encodes using the MIME type base64 encoding scheme with specified line length and line separators.
lineLength - the length of each output line (rounded down to nearest multiple of 4). If lineLength <= 0 the output will not be separated in lineslineSeparator - the line separator for each output lineIllegalArgumentException - if lineSeparator includes any character of "The Base64 Alphabet" as specified in Table 1 of RFC 2045.public static Base64.Decoder getDecoder()
Returns a Base64.Decoder that decodes using the Basic type base64 encoding scheme.
public static Base64.Decoder getUrlDecoder()
Returns a Base64.Decoder that decodes using the URL and Filename safe type base64 encoding scheme.
public static Base64.Decoder getMimeDecoder()
Returns a Base64.Decoder that decodes using the MIME type base64 decoding scheme.
© 1993–2017, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.