Here you can find the source of toLong(final byte[] b, final int offset)
static long toLong(final byte[] b, final int offset)
//package com.java2s; /*/*from w w w .j a va2 s. co m*/ * Copyright 2014 - 2016 Real Logic 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 toLong(final byte[] b, final int offset) { return ((b[offset + 7] & 0xFFL)) + ((b[offset + 6] & 0xFFL) << 8) + ((b[offset + 5] & 0xFFL) << 16) + ((b[offset + 4] & 0xFFL) << 24) + ((b[offset + 3] & 0xFFL) << 32) + ((b[offset + 2] & 0xFFL) << 40) + ((b[offset + 1] & 0xFFL) << 48) + (((long) b[offset]) << 56); } }