Here you can find the source of toInt(byte[] b)
public static int toInt(byte[] b)
//package com.java2s; /*// w ww.j a va 2s.com * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 int toInt(byte[] b) { return (((((int) b[3]) & 0xFF) << 32) + ((((int) b[2]) & 0xFF) << 40) + ((((int) b[1]) & 0xFF) << 48) + ((((int) b[0]) & 0xFF) << 56)); } }