Here you can find the source of bytesToInt(byte b1, byte b2, byte b3, byte b4)
public static int bytesToInt(byte b1, byte b2, byte b3, byte b4)
//package com.java2s; /*// w w w . j a va 2 s .co m Copyright 2005-2006 The Apache Software Foundation or its licensors, as applicable 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 int bytesToInt(byte b1, byte b2, byte b3, byte b4) { return (b1 << 24 & 0xFFFFFFFF) | (b2 << 16 & 0xFFFFFF) | (b3 << 8 & 0xFFFF) | (b4 & 0xFF) & 0xFFFFFFFF; } public static int bytesToInt(byte[] bytes, int offset) { return bytesToInt(bytes[offset], bytes[offset + 1], bytes[offset + 2], bytes[offset + 3]); } }