Here you can find the source of bytesToInt(byte bytes[], int start)
static int bytesToInt(byte bytes[], int start)
//package com.java2s; /*// w w w . j a v a 2 s.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 { static int bytesToInt(byte bytes[], int start) { /* * First mask the byte with 255, as when a negative signed byte converts * to an integer, it has bits on in the first 3 bytes, we are only * concerned about the right-most 8 bits. Then shift the rightmost byte * to align with its position in the integer. */ int value = ((bytes[start + 3] & 255)) | ((bytes[start + 2] & 255) << 8) | ((bytes[start + 1] & 255) << 16) | ((bytes[start] & 255) << 24); return value; } }