Here you can find the source of listToArray(List
public static byte[] listToArray(List<Byte> bytes)
//package com.java2s; /*//from w w w .j ava2 s.c o m * This file is part of the Sensact Configuration software. * * Sensact Configuration software is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Sensact Configuration software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this Sensact Arduino software. * If not, see <https://www.gnu.org/licenses/>. */ import java.util.List; public class Main { public static byte[] listToArray(List<Byte> bytes) { byte[] buffer; buffer = new byte[bytes.size()]; int i = 0; for (Byte b : bytes) { buffer[i++] = b; } return buffer; } }