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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » dummyCA 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   dummyCA.Base64

Base64
public class Base64 (Code)
This class contains a Base64 encoder and decoder. It cannot be instantiated. The encoder and decoder are based on RFC 1521, except that encoder do not break up lines and the decoder will treat a line break as as invalid characters. This done since MIDP JAD's can not have line breaks with in an attribute. Also different RFC's use different lengths for base64 strings such as; 76 for 1521, 64 for 1421, and no breaks for 2228.

For example to decode:

 String  encodedData;
 byte    binaryData[];
 binaryData = Base64.decode(encodedData);
 
This will decode the String in encodedData and give you an array of bytes in the array binaryData. On errors, this class throws an IOException with the following detail strings:
 "Base64 string not a mulitple of 4"
 "Invalid character in Base64 string"
 




Method Summary
public static  byte[]decode(String encoded)
     Converts a Base64 encoded string to a byte array.
public static  byte[]decode(String encoded, int offset, int length)
     Converts an embedded Base64 encoded string to a byte array.
public static  Stringencode(byte[] data, int offset, int length)
     Converts a byte array into a Base64 encoded string.



Method Detail
decode
public static byte[] decode(String encoded) throws IOException(Code)
Converts a Base64 encoded string to a byte array.
Parameters:
  encoded - Base64 encoded data decode binary data; 3 bytes for every 4 chars - minus padding
exception:
  java.io.IOException - is thrown, if an I/O error occurs reading the data



decode
public static byte[] decode(String encoded, int offset, int length) throws IOException(Code)
Converts an embedded Base64 encoded string to a byte array.
Parameters:
  encoded - a String with Base64 data embedded in it
Parameters:
  offset - which char of the String to start at
Parameters:
  length - how many chars to decode; must be a multiple of 4 decode binary data; 3 bytes for every 4 chars - minus padding
exception:
  java.io.IOException - is thrown, if an I/O error occurs reading the data



encode
public static String encode(byte[] data, int offset, int length)(Code)
Converts a byte array into a Base64 encoded string.
Parameters:
  data - bytes to encode
Parameters:
  offset - which byte to start at
Parameters:
  length - how many bytes to encode; padding will be added if needed base64 encoding of data; 4 chars for every 3 bytes



Methods inherited from java.lang.Object
public boolean equals(Object obj)(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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