Here you can find the source of bytesToBase64(byte[] bytes)
public static String bytesToBase64(byte[] bytes)
//package com.java2s; /*// w ww. j a va2 s. c o m * Copyright 2015 GeekSaga. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ public class Main { private static final char sBitChars[] = { // 'G', '5', 'g', 'D', 'j', 'P', 'V', 'M', 'R', 'Z', 'm', 'Q', 's', 'N', 'z', '-', // 'B', 'i', '4', '_', 'k', '1', 'r', 'U', 'o', 'W', '8', 'l', '9', 'c', 'F', 'O', // 'n', 'x', 'L', 'A', 'd', '7', 'u', 'H', '3', '0', 'S', 'a', 'f', 'C', 'h', '6', // 'b', 'E', 'T', 'X', 't', 'y', 'q', 'J', '2', 'e', 'p', 'I', 'Y', 'K', 'v', 'w' // }; public static String bytesToBase64(byte[] bytes) { char base64[] = new char[bytes.length]; for (int i = 0; i < bytes.length; i++) { base64[i] = sBitChars[bytes[i]]; } return new String(base64); } }