Here you can find the source of decode(String cipherText)
public static byte[] decode(String cipherText) throws IOException
//package com.java2s; //License from project: Apache License import sun.misc.BASE64Decoder; import java.io.IOException; public class Main { private static final BASE64Decoder DECODER = new BASE64Decoder(); public static byte[] decode(String cipherText) throws IOException { return DECODER.decodeBuffer(cipherText); }//from ww w . ja v a 2s.c o m }