Here you can find the source of base64encoding(byte[] bytes)
public static String base64encoding(byte[] bytes)
//package com.java2s; //License from project: Open Source License import java.util.Base64; import java.util.Base64.Encoder; public class Main { public static String base64encoding(byte[] bytes) { Encoder encoder = Base64.getEncoder(); return encoder.encodeToString(bytes); }// ww w. j a v a 2s.c o m }