Here you can find the source of bin2long(byte[] array, int offset)
public static long bin2long(byte[] array, int offset)
//package com.java2s; /*/*from ww w.ja va 2 s . c o m*/ * Copyright (C) 2011 Alastair R. Beresford * Copyright (C) 2012 Daniel R. Thomas (drt24). * * 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 long bin2long(byte[] array, int offset) { return ((array[offset + 0] & 0xffL) << 56) + ((array[offset + 1] & 0xffL) << 48) + ((array[offset + 2] & 0xffL) << 40) + ((array[offset + 3] & 0xffL) << 32) + ((array[offset + 4] & 0xffL) << 24) + ((array[offset + 5] & 0xffL) << 16) + ((array[offset + 6] & 0xffL) << 8) + (array[offset + 7] & 0xffL); } public static long bin2long(byte[] array) { return bin2long(array, 0); } }