Here you can find the source of bytes(int... bytes)
public static byte[] bytes(int... bytes)
//package com.java2s; /*/* w ww. j av a 2 s . c om*/ * Copyright 2013 Google Inc. * * 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 { public static byte[] bytes(int... bytes) { byte[] result = new byte[bytes.length]; for (int i = 0; i < bytes.length; i++) { result[i] = (byte) bytes[i]; } return result; } public static byte[] bytes(String bytes) { byte[] result = new byte[bytes.length()]; for (int i = 0; i < bytes.length(); i++) { String digit = bytes.substring(i, i + 1); result[i] = Byte.parseByte(digit); } return result; } }