java.lang.Object
- org.apache.jackrabbit.util.Base64

```
public class Base64
extends java.lang.Object
```
Base64 provides Base64 encoding/decoding of strings and streams.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static long`	`calcEncodedLength(long dataLength)`	Calculates the size (i.e.
`static void`	`decode(char[] chars, int off, int len, java.io.OutputStream out)`	Decode base64 encoded data.
`static void`	`decode(char[] chars, java.io.OutputStream out)`	Decode base64 encoded data.
`static void`	`decode(java.io.InputStream in, java.io.OutputStream out)`	Decode base64 encoded data.
`static void`	`decode(java.io.Reader reader, java.io.OutputStream out)`	Decode base64 encoded data.
`static java.lang.String`	`decode(java.lang.String data)`	Decodes a base64-encoded string using the UTF-8 character encoding.
`static void`	`decode(java.lang.String data, java.io.OutputStream out)`	Decode base64 encoded data.
`static java.lang.String`	`decodeIfEncoded(java.lang.String data)`	Decodes a base64-encoded string marked by a "{base64}" prefix.
`static java.lang.String`	`decodeOrEncode(java.lang.String data)`	Base64-decodes or -encodes the given string, depending on whether or not it contains a "{base64}" prefix.
`static void`	`encode(byte[] data, int off, int len, java.io.Writer writer)`	Outputs base64 representation of the specified data to a `Writer`.
`static void`	`encode(java.io.InputStream in, java.io.OutputStream out)`	Outputs base64 representation of the specified stream data to an `OutputStream`.
`static void`	`encode(java.io.InputStream in, java.io.Writer writer)`	Outputs base64 representation of the specified stream data to a `Writer`.
`static java.lang.String`	`encode(java.lang.String data)`	Returns the base64 representation of UTF-8 encoded string.
`static long`	`guessDecodedLength(long encLength)`	Pessimistically guesses the size (i.e.
`static void`	`main(java.lang.String[] args)`	Base64-decodes or -encodes (see `decodeOrEncode(String)` all the given arguments and prints the results on separate lines in standard output.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - main
```
public static void main(java.lang.String[] args)
```
    Base64-decodes or -encodes (see decodeOrEncode(String) all the given arguments and prints the results on separate lines in standard output.
    
    Parameters:
    
    args - command line arguments to be decoded or encoded
    
    Since:
    
    Apache Jackrabbit 2.3
  - decodeOrEncode
```
public static java.lang.String decodeOrEncode(java.lang.String data)
```
    Base64-decodes or -encodes the given string, depending on whether or not it contains a "{base64}" prefix. If the string gets encoded, the "{base64}" prefix is added to it.
    
    Parameters:
    
    data - string to be decoded or encoded
    
    Returns:
    
    decoded or encoded string
    
    Since:
    
    Apache Jackrabbit 2.3
  - decodeIfEncoded
```
public static java.lang.String decodeIfEncoded(java.lang.String data)
```
    Decodes a base64-encoded string marked by a "{base64}" prefix. If the prefix is not found, then the string is returned as-is. If the given string is null, then null is returned.
    
    Parameters:
    
    data - string to be decoded, can be null
    
    Returns:
    
    the given string, possibly decoded
    
    Since:
    
    Apache Jackrabbit 2.3
  - calcEncodedLength
```
public static long calcEncodedLength(long dataLength)
```
    Calculates the size (i.e. number of bytes) of the base64 encoded output given the length (i.e. number of bytes) of the data to be encoded.
    
    Parameters:
    
    dataLength - length (i.e. number of bytes) of the data to be encoded
    
    Returns:
    
    size (i.e. number of bytes) of the base64 encoded output
  - guessDecodedLength
```
public static long guessDecodedLength(long encLength)
```
    Pessimistically guesses the size (i.e. number of bytes) of the decoded output given the length (i.e. number of bytes) of the base64 encoded data.
    
    Parameters:
    
    encLength - length (i.e. number of bytes) of the base64 encoded data
    
    Returns:
    
    size (i.e. number of bytes) of the decoded output
  - encode
```
public static void encode(java.io.InputStream in,
                          java.io.Writer writer)
                   throws java.io.IOException
```
    Outputs base64 representation of the specified stream data to a Writer.
    
    Parameters:
    
    in - stream data to be encoded
    
    writer - writer to output the encoded data
    
    Throws:
    
    java.io.IOException - if an i/o error occurs
  - encode
```
public static void encode(java.io.InputStream in,
                          java.io.OutputStream out)
                   throws java.io.IOException
```
    Outputs base64 representation of the specified stream data to an OutputStream.
    
    Parameters:
    
    in - stream data to be encoded
    
    out - stream where the encoded data should be written to
    
    Throws:
    
    java.io.IOException - if an i/o error occurs
  - encode
```
public static void encode(byte[] data,
                          int off,
                          int len,
                          java.io.Writer writer)
                   throws java.io.IOException
```
    Outputs base64 representation of the specified data to a Writer.
    
    Parameters:
    
    data - data to be encoded
    
    off - offset within data at which to start encoding
    
    len - length of data to encode
    
    writer - writer to output the encoded data
    
    Throws:
    
    java.io.IOException - if an i/o error occurs
  - encode
```
public static java.lang.String encode(java.lang.String data)
```
    Returns the base64 representation of UTF-8 encoded string.
    
    Parameters:
    
    data - the string to be encoded
    
    Returns:
    
    base64-encoding of the string
    
    Since:
    
    Apache Jackrabbit 2.3
  - decode
```
public static java.lang.String decode(java.lang.String data)
```
    Decodes a base64-encoded string using the UTF-8 character encoding. The given string is returned as-is if it doesn't contain a valid base64 encoding.
    
    Parameters:
    
    data - the base64-encoded data to be decoded
    
    Returns:
    
    decoded string
    
    Since:
    
    Apache Jackrabbit 2.3
  - decode
```
public static void decode(java.io.Reader reader,
                          java.io.OutputStream out)
                   throws java.io.IOException
```
    Decode base64 encoded data.
    
    Parameters:
    
    reader - reader for the base64 encoded data to be decoded
    
    out - stream where the decoded data should be written to
    
    Throws:
    
    java.io.IOException - if an i/o error occurs
  - decode
```
public static void decode(java.io.InputStream in,
                          java.io.OutputStream out)
                   throws java.io.IOException
```
    Decode base64 encoded data. The data read from the inputstream is assumed to be of charset "US-ASCII".
    
    Parameters:
    
    in - inputstream of the base64 encoded data to be decoded
    
    out - stream where the decoded data should be written to
    
    Throws:
    
    java.io.IOException - if an i/o error occurs
  - decode
```
public static void decode(java.lang.String data,
                          java.io.OutputStream out)
                   throws java.io.IOException
```
    Decode base64 encoded data.
    
    Parameters:
    
    data - the base64 encoded data to be decoded
    
    out - stream where the decoded data should be written to
    
    Throws:
    
    java.io.IOException - if an i/o error occurs
  - decode
```
public static void decode(char[] chars,
                          java.io.OutputStream out)
                   throws java.io.IOException
```
    Decode base64 encoded data.
    
    Parameters:
    
    chars - the base64 encoded data to be decoded
    
    out - stream where the decoded data should be written to
    
    Throws:
    
    java.io.IOException - if an i/o error occurs
  - decode
```
public static void decode(char[] chars,
                          int off,
                          int len,
                          java.io.OutputStream out)
                   throws java.io.IOException
```
    Decode base64 encoded data.
    
    Parameters:
    
    chars - the base64 encoded data to be decoded
    
    off - offset within data at which to start decoding
    
    len - length of data to decode
    
    out - stream where the decoded data should be written to
    
    Throws:
    
    java.io.IOException - if an i/o error occurs

Class Base64

Method Summary

Methods inherited from class java.lang.Object

Method Detail

main

decodeOrEncode

decodeIfEncoded

calcEncodedLength

guessDecodedLength

encode

encode

encode

encode

decode

decode

decode

decode

decode

decode