Here you can find the source of bytesToLong(byte[] p, int offset)
static long bytesToLong(byte[] p, int offset)
//package com.java2s; /*/* w ww .j a v a 2 s.c o m*/ * Copyright (c) 2016 Pando Software Ltd. * * 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 { static long bytesToLong(byte[] p, int offset) { return l(p[offset]) | (l(p[offset + 1]) << 8) | (l(p[offset + 2]) << 16) | (l(p[offset + 3]) << 24) | (l(p[offset + 4]) << 32) | (l(p[offset + 5]) << 40) | (l(p[offset + 6]) << 48) | (l(p[offset + 7]) << 56); } private static long l(byte b) { return b & 0xffL; } }