base64Alphabet; private static byte[] lookUpBase64Alphabet; public void Base64(); public static boolean isBase64(String); public static boolean isBase64(byte); public static boolean isBase64(byte[]); public static byte[] encode(byte[]); public static String encode(String); public static String encode(String, String) throws java.io.UnsupportedEncodingE; public static byte[] decode(byte[]); static void <clinit>(); } org/apache/commons/codec/binary/Base64.class package org.apache.commons.codec.binary; public synchronized...