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## com.google.gwt.user.server
Class Base64Utils

    java.lang.Object
      com.google.gwt.user.server.Base64Utils

    public class Base64Utils

extends java.lang.Object

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

Constructor Summary
`Base64Utils()`

Method Summary
`static byte[]` | `fromBase64(java.lang.String data)` Decode a base64 string into a byte array.
`static long` | `longFromBase64(java.lang.String value)` Decode a base64 string into a long value.
`static java.lang.String` | `toBase64(byte[] data)` Converts a byte array into a base 64 encoded string.
`static java.lang.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 Detail

### Base64Utils

    public Base64Utils()

Method Detail

### fromBase64

    public static byte[] fromBase64(java.lang.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(java.lang.String value)

  Decode a base64 string into a long value.

### toBase64

    public static java.lang.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 java.lang.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.

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