public static byte[] decode(String str,int flags){
  return decode(str.getBytes(),flags);
}

public static byte [ ] decode ( String str , int flags ) { return decode ( str . getBytes ( ) , flags ) ; }
decode the base64 - encoded data in input and return the data in a new byte array . < p > the padding ' = ' characters at the end are considered optional , but if any are present , there must be the correct number of them .
