Field Detail

• alphanumeric_lower

  public static final String alphanumeric_lower

  See Also:

  Constant Field Values

• alphanumeric_both

  public static final String alphanumeric_both

  See Also:

  Constant Field Values

Method Detail

• randomString

  public static String randomString(int len)

  Generates a lowercase alphanumeric random String.

  Parameters:

  len - length of String to be generated

  Returns:

  random generated String

• randomString

  public static String randomString(int len,
                                    String alphabet)

  Generate a random string of length len from the given alphabet.

• timestampString

  public static String timestampString()

  Converts the current time in milliseconds to an 8-digit lowercase alphanumeric String.

  Returns:

  8-digit String encoding the current timestamp

• timestampedId

  public static String timestampedId(int n)

  Generates a (8+n) bit alphanumeric lowercase random ID. The first eight digits encode the timestamp.

  Returns:

  a timestamped random ID

• getMimetype

  public static String getMimetype(String filename)